Merge branch 'Stirling-2.0' of https://github.com/reecebrowne/Stirling-PDF into Stirling-2.0

frontend/.gitignore

@@ -0,0 +1,23 @@
+# See https://help.github.com/articles/ignoring-files/ for more about ignoring files.
+
+# dependencies
+/node_modules
+/.pnp
+.pnp.js
+
+# testing
+/coverage
+
+# production
+/build
+
+# misc
+.DS_Store
+.env.local
+.env.development.local
+.env.test.local
+.env.production.local
+
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*

frontend/README.md

@@ -0,0 +1,70 @@
+# Getting Started with Create React App
+
+This project was bootstrapped with [Create React App](https://github.com/facebook/create-react-app).
+
+## Available Scripts
+
+In the project directory, you can run:
+
+### `npm start`
+
+Runs the app in the development mode.\
+Open [http://localhost:3000](http://localhost:3000) to view it in your browser.
+
+The page will reload when you make changes.\
+You may also see any lint errors in the console.
+
+### `npm test`
+
+Launches the test runner in the interactive watch mode.\
+See the section about [running tests](https://facebook.github.io/create-react-app/docs/running-tests) for more information.
+
+### `npm run build`
+
+Builds the app for production to the `build` folder.\
+It correctly bundles React in production mode and optimizes the build for the best performance.
+
+The build is minified and the filenames include the hashes.\
+Your app is ready to be deployed!
+
+See the section about [deployment](https://facebook.github.io/create-react-app/docs/deployment) for more information.
+
+### `npm run eject`
+
+**Note: this is a one-way operation. Once you `eject`, you can't go back!**
+
+If you aren't satisfied with the build tool and configuration choices, you can `eject` at any time. This command will remove the single build dependency from your project.
+
+Instead, it will copy all the configuration files and the transitive dependencies (webpack, Babel, ESLint, etc) right into your project so you have full control over them. All of the commands except `eject` will still work, but they will point to the copied scripts so you can tweak them. At this point you're on your own.
+
+You don't have to ever use `eject`. The curated feature set is suitable for small and middle deployments, and you shouldn't feel obligated to use this feature. However we understand that this tool wouldn't be useful if you couldn't customize it when you are ready for it.
+
+## Learn More
+
+You can learn more in the [Create React App documentation](https://facebook.github.io/create-react-app/docs/getting-started).
+
+To learn React, check out the [React documentation](https://reactjs.org/).
+
+### Code Splitting
+
+This section has moved here: [https://facebook.github.io/create-react-app/docs/code-splitting](https://facebook.github.io/create-react-app/docs/code-splitting)
+
+### Analyzing the Bundle Size
+
+This section has moved here: [https://facebook.github.io/create-react-app/docs/analyzing-the-bundle-size](https://facebook.github.io/create-react-app/docs/analyzing-the-bundle-size)
+
+### Making a Progressive Web App
+
+This section has moved here: [https://facebook.github.io/create-react-app/docs/making-a-progressive-web-app](https://facebook.github.io/create-react-app/docs/making-a-progressive-web-app)
+
+### Advanced Configuration
+
+This section has moved here: [https://facebook.github.io/create-react-app/docs/advanced-configuration](https://facebook.github.io/create-react-app/docs/advanced-configuration)
+
+### Deployment
+
+This section has moved here: [https://facebook.github.io/create-react-app/docs/deployment](https://facebook.github.io/create-react-app/docs/deployment)
+
+### `npm run build` fails to minify
+
+This section has moved here: [https://facebook.github.io/create-react-app/docs/troubleshooting#npm-run-build-fails-to-minify](https://facebook.github.io/create-react-app/docs/troubleshooting#npm-run-build-fails-to-minify)

frontend/package.json

@@ -0,0 +1,56 @@
+{
+  "name": "frontend",
+  "version": "0.1.0",
+  "private": true,
+  "proxy": "http://localhost:8080",
+  "dependencies": {
+    "@emotion/react": "^11.14.0",
+    "@emotion/styled": "^11.14.0",
+    "@mantine/core": "^8.0.1",
+    "@mantine/dropzone": "^8.0.1",
+    "@mantine/hooks": "^8.0.1",
+    "@mui/icons-material": "^7.1.0",
+    "@mui/material": "^7.1.0",
+    "@testing-library/dom": "^10.4.0",
+    "@testing-library/jest-dom": "^6.6.3",
+    "@testing-library/react": "^16.3.0",
+    "@testing-library/user-event": "^13.5.0",
+    "axios": "^1.9.0",
+    "pdfjs-dist": "^3.11.174",
+    "react": "^19.1.0",
+    "react-dom": "^19.1.0",
+    "react-router-dom": "^7.6.0",
+    "react-scripts": "5.0.1",
+    "web-vitals": "^2.1.4"
+  },
+  "scripts": {
+    "start": "react-scripts start",
+    "build": "react-scripts build",
+    "test": "react-scripts test",
+    "eject": "react-scripts eject"
+  },
+  "eslintConfig": {
+    "extends": [
+      "react-app",
+      "react-app/jest"
+    ]
+  },
+  "browserslist": {
+    "production": [
+      ">0.2%",
+      "not dead",
+      "not op_mini all"
+    ],
+    "development": [
+      "last 1 chrome version",
+      "last 1 firefox version",
+      "last 1 safari version"
+    ]
+  },
+  "devDependencies": {
+    "postcss": "^8.5.3",
+    "postcss-cli": "^11.0.1",
+    "postcss-preset-mantine": "^1.17.0",
+    "postcss-simple-vars": "^7.0.1"
+  }
+}

frontend/postcss.config.js

@@ -0,0 +1,7 @@
+module.exports = {
+  plugins: {
+    tailwindcss: {},
+    autoprefixer: {},
+
+  },
+}

frontend/public/index.html

@@ -0,0 +1,22 @@
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8" />
+    <link rel="icon" href="%PUBLIC_URL%/favicon.ico" />
+    <meta name="viewport" content="width=device-width, initial-scale=1" />
+    <meta name="theme-color" content="#000000" />
+    <meta
+      name="description"
+      content="Web site created using create-react-app"
+    />
+    <link rel="apple-touch-icon" href="%PUBLIC_URL%/logo192.png" />
+    <link rel="manifest" href="%PUBLIC_URL%/manifest.json" />
+
+    <title>React App</title>
+  </head>
+  <body>
+    <noscript>You need to enable JavaScript to run this app.</noscript>
+    <div id="root"></div>
+
+  </body>
+</html>

frontend/public/manifest.json

@@ -0,0 +1,25 @@
+{
+  "short_name": "React App",
+  "name": "Create React App Sample",
+  "icons": [
+    {
+      "src": "favicon.ico",
+      "sizes": "64x64 32x32 24x24 16x16",
+      "type": "image/x-icon"
+    },
+    {
+      "src": "logo192.png",
+      "type": "image/png",
+      "sizes": "192x192"
+    },
+    {
+      "src": "logo512.png",
+      "type": "image/png",
+      "sizes": "512x512"
+    }
+  ],
+  "start_url": ".",
+  "display": "standalone",
+  "theme_color": "#000000",
+  "background_color": "#ffffff"
+}

frontend/public/robots.txt

@@ -0,0 +1,3 @@
+# https://www.robotstxt.org/robotstxt.html
+User-agent: *
+Disallow:

frontend/src/App.css

@@ -0,0 +1,38 @@
+.App {
+  text-align: center;
+}
+
+.App-logo {
+  height: 40vmin;
+  pointer-events: none;
+}
+
+@media (prefers-reduced-motion: no-preference) {
+  .App-logo {
+    animation: App-logo-spin infinite 20s linear;
+  }
+}
+
+.App-header {
+  background-color: #282c34;
+  min-height: 100vh;
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  justify-content: center;
+  font-size: calc(10px + 2vmin);
+  color: white;
+}
+
+.App-link {
+  color: #61dafb;
+}
+
+@keyframes App-logo-spin {
+  from {
+    transform: rotate(0deg);
+  }
+  to {
+    transform: rotate(360deg);
+  }
+}

frontend/src/App.js

@@ -0,0 +1,31 @@
+import React from 'react';
+import ReactDOM from 'react-dom/client';
+import { BrowserRouter, Routes, Route } from 'react-router-dom';
+import { ColorSchemeScript, MantineProvider } from '@mantine/core';
+import './index.css';
+import HomePage from './pages/HomePage';
+import SplitPdfPanel from './tools/Split';
+import reportWebVitals from './reportWebVitals';
+
+export default function App() {
+  return (
+    <Routes>
+      <Route path="/" element={<HomePage />} />
+      <Route path="/split" element={<SplitPdfPanel />} />
+    </Routes>
+  );
+}
+
+const root = ReactDOM.createRoot(document.getElementById('root'));
+root.render(
+  <React.StrictMode>
+    <ColorSchemeScript />
+    <MantineProvider withGlobalStyles withNormalizeCSS>
+      <BrowserRouter>
+        <App />
+      </BrowserRouter>
+    </MantineProvider>
+  </React.StrictMode>
+);
+
+reportWebVitals();

frontend/src/App.test.js

@@ -0,0 +1,8 @@
+import { render, screen } from '@testing-library/react';
+import App from './App';
+
+test('renders learn react link', () => {
+  render(<App />);
+  const linkElement = screen.getByText(/learn react/i);
+  expect(linkElement).toBeInTheDocument();
+});

frontend/src/components/FileManager.js

@@ -0,0 +1,172 @@
+import React, { useState, useEffect } from "react";
+import { Card, Group, Text, Stack, Image, Badge, Button, Box, Flex } from "@mantine/core";
+import { Dropzone, MIME_TYPES } from "@mantine/dropzone";
+import { GlobalWorkerOptions, getDocument, version as pdfjsVersion } from "pdfjs-dist";
+GlobalWorkerOptions.workerSrc = `${process.env.PUBLIC_URL}/pdf.worker.js`;
+
+function getFileDate(file) {
+  if (file.lastModified) {
+    return new Date(file.lastModified).toLocaleString();
+  }
+  return "Unknown";
+}
+
+function getFileSize(file) {
+  if (!file.size) return "Unknown";
+  if (file.size < 1024) return `${file.size} B`;
+  if (file.size < 1024 * 1024) return `${(file.size / 1024).toFixed(1)} KB`;
+  return `${(file.size / (1024 * 1024)).toFixed(2)} MB`;
+}
+
+function usePdfThumbnail(file) {
+  const [thumb, setThumb] = useState(null);
+
+  useEffect(() => {
+    let cancelled = false;
+    async function generate() {
+      if (!file) return;
+      try {
+        const arrayBuffer = await file.arrayBuffer();
+        const pdf = await getDocument({ data: arrayBuffer }).promise;
+        const page = await pdf.getPage(1);
+        const viewport = page.getViewport({ scale: 0.5 });
+        const canvas = document.createElement("canvas");
+        canvas.width = viewport.width;
+        canvas.height = viewport.height;
+        const context = canvas.getContext("2d");
+        await page.render({ canvasContext: context, viewport }).promise;
+        if (!cancelled) setThumb(canvas.toDataURL());
+      } catch {
+        if (!cancelled) setThumb(null);
+      }
+    }
+    generate();
+    return () => { cancelled = true; };
+  }, [file]);
+
+  return thumb;
+}
+
+function FileCard({ file, onRemove, onDoubleClick }) {
+  const thumb = usePdfThumbnail(file);
+
+  return (
+    <Card
+      shadow="xs"
+      radius="md"
+      withBorder
+      p="xs"
+      style={{ width: 225, minWidth: 180, maxWidth: 260, cursor: onDoubleClick ? "pointer" : undefined }}
+      onDoubleClick={onDoubleClick}
+    >
+      <Stack spacing={6} align="center">
+        <Box
+          style={{
+            border: "2px solid #e0e0e0",
+            borderRadius: 8,
+            width: 90,
+            height: 120,
+            display: "flex",
+            alignItems: "center",
+            justifyContent: "center",
+            margin: "0 auto",
+            background: "#fafbfc",
+          }}
+        >
+          {thumb ? (
+            <Image src={thumb} alt="PDF thumbnail" height={110} width={80} fit="contain" radius="sm" />
+          ) : (
+            <Image src="/images/pdf-placeholder.svg" alt="PDF" height={60} width={60} fit="contain" radius="sm" withPlaceholder />
+          )}
+        </Box>
+        <Text weight={500} size="sm" lineClamp={1} align="center">
+          {file.name}
+        </Text>
+        <Group spacing="xs" position="center">
+          <Badge color="gray" variant="light" size="sm">
+            {getFileSize(file)}
+          </Badge>
+          <Badge color="blue" variant="light" size="sm">
+            {getFileDate(file)}
+          </Badge>
+        </Group>
+        <Button
+          color="red"
+          size="xs"
+          variant="light"
+          onClick={onRemove}
+          mt={4}
+        >
+          Remove
+        </Button>
+      </Stack>
+    </Card>
+  );
+}
+
+export default function FileManager({ files = [], setFiles, allowMultiple = true, setPdfFile, setCurrentView }) {
+  const handleDrop = (uploadedFiles) => {
+    setFiles((prevFiles) => (allowMultiple ? [...prevFiles, ...uploadedFiles] : uploadedFiles));
+  };
+
+  const handleRemoveFile = (index) => {
+    setFiles((prevFiles) => prevFiles.filter((_, i) => i !== index));
+  };
+
+  return (
+    <div style={{ width: "100%", margin: "0 auto" }}>
+      <Dropzone
+        onDrop={handleDrop}
+        accept={[MIME_TYPES.pdf]}
+        multiple={allowMultiple}
+        maxSize={20 * 1024 * 1024}
+        style={{
+          marginBottom: 16,
+          border: "2px dashed rgb(202, 202, 202)",
+          background: "#f8fafc",
+          borderRadius: 8,
+          minHeight: 120,
+          display: "flex",
+          alignItems: "center",
+          justifyContent: "center",
+        }}
+      >
+        <Group position="center" spacing="xl" style={{ pointerEvents: "none" }}>
+          <Text size="md">
+            Drag PDF files here or click to select
+          </Text>
+        </Group>
+      </Dropzone>
+      {files.length === 0 ? (
+        <Text c="dimmed" align="center">
+          No files uploaded yet.
+        </Text>
+      ) : (
+        <Box>
+          <Flex
+            wrap="wrap"
+            gap="lg"
+            justify="flex-start"
+            style={{ width: "fit-content", margin: "0 auto" }}
+          >
+            {files.map((file, idx) => (
+              <FileCard
+                key={file.name + idx}
+                file={file}
+                onRemove={() => handleRemoveFile(idx)}
+                onDoubleClick={() => {
+                  const fileObj = file.file || file; // handle wrapped or raw File
+                  setPdfFile && setPdfFile({
+                    file: fileObj,
+                    url: URL.createObjectURL(fileObj),
+                  });
+                  setCurrentView && setCurrentView("viewer");
+                }}
+              />
+            ))}
+          </Flex>
+        </Box>
+      )}
+    </div>
+  );
+}

frontend/src/components/PageEditor.js

@@ -0,0 +1,9 @@
+import React from "react";
+
+export default function PageEditor({ pdfFile }) {
+  return (
+    <div className="w-full h-full flex items-center justify-center">
+      <p className="text-gray-500">Page Editor is under construction.</p>
+    </div>
+  );
+}

frontend/src/components/Viewer.js

@@ -0,0 +1,112 @@
+import React, { useEffect, useState } from "react";
+import { Paper, Stack, Text, ScrollArea, Loader, Center, Button, Group } from "@mantine/core";
+import { getDocument, GlobalWorkerOptions, version as pdfjsVersion } from "pdfjs-dist";
+
+GlobalWorkerOptions.workerSrc = `${process.env.PUBLIC_URL}/pdf.worker.js`;
+
+export default function Viewer({ pdfFile, setPdfFile }) {
+  const [numPages, setNumPages] = useState(0);
+  const [pageImages, setPageImages] = useState([]);
+  const [loading, setLoading] = useState(false);
+
+  useEffect(() => {
+    let cancelled = false;
+    async function renderPages() {
+      if (!pdfFile || !pdfFile.url) {
+        setNumPages(0);
+        setPageImages([]);
+        return;
+      }
+      setLoading(true);
+      try {
+        const pdf = await getDocument(pdfFile.url).promise;
+        setNumPages(pdf.numPages);
+        const images = [];
+        for (let i = 1; i <= pdf.numPages; i++) {
+          const page = await pdf.getPage(i);
+          const viewport = page.getViewport({ scale: 1.2 });
+          const canvas = document.createElement("canvas");
+          canvas.width = viewport.width;
+          canvas.height = viewport.height;
+          const ctx = canvas.getContext("2d");
+          await page.render({ canvasContext: ctx, viewport }).promise;
+          images.push(canvas.toDataURL());
+        }
+        if (!cancelled) setPageImages(images);
+      } catch {
+        if (!cancelled) setPageImages([]);
+      }
+      if (!cancelled) setLoading(false);
+    }
+    renderPages();
+    return () => { cancelled = true; };
+  }, [pdfFile]);
+
+  return (
+    <Paper shadow="xs" radius="md" p="md" style={{ height: "100%", minHeight: 400, display: "flex", flexDirection: "column" }}>
+      {!pdfFile ? (
+        <Center style={{ flex: 1 }}>
+          <Stack align="center">
+            <Text color="dimmed">No PDF loaded. Click to upload a PDF.</Text>
+            <Button
+              component="label"
+              variant="outline"
+              color="blue"
+            >
+              Choose PDF
+              <input
+                type="file"
+                accept="application/pdf"
+                hidden
+                onChange={(e) => {
+                  const file = e.target.files[0];
+                  if (file && file.type === "application/pdf") {
+                    const fileUrl = URL.createObjectURL(file);
+                    setPdfFile({ file, url: fileUrl });
+                  }
+                }}
+              />
+            </Button>
+          </Stack>
+        </Center>
+      ) : loading ? (
+        <Center style={{ flex: 1 }}>
+          <Loader size="lg" />
+        </Center>
+      ) : (
+        <ScrollArea style={{ flex: 1, height: "100%" }}>
+          <Stack spacing="xl" align="center">
+            {pageImages.length === 0 && (
+              <Text color="dimmed">No pages to display.</Text>
+            )}
+            {pageImages.map((img, idx) => (
+              <img
+                key={idx}
+                src={img}
+                alt={`Page ${idx + 1}`}
+                style={{
+                  width: "100%",
+                  maxWidth: 700,
+                  boxShadow: "0 2px 8px rgba(0,0,0,0.08)",
+                  borderRadius: 8,
+                  background: "#fff"
+                }}
+              />
+            ))}
+          </Stack>
+        </ScrollArea>
+      )}
+      {pdfFile && (
+        <Group position="right" mt="md">
+          <Button
+            variant="light"
+            color="red"
+            onClick={() => setPdfFile(null)}
+          >
+            Close PDF
+          </Button>
+        </Group>
+      )}
+    </Paper>
+  );
+}

frontend/src/index.css

@@ -0,0 +1,17 @@
+@tailwind base;
+@tailwind components;
+@tailwind utilities;
+
+body {
+  margin: 0;
+  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen',
+    'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue',
+    sans-serif;
+  -webkit-font-smoothing: antialiased;
+  -moz-osx-font-smoothing: grayscale;
+}
+
+code {
+  font-family: source-code-pro, Menlo, Monaco, Consolas, 'Courier New',
+    monospace;
+}

frontend/src/index.js

@@ -0,0 +1,22 @@
+import '@mantine/core/styles.css';
+import React from 'react';
+import ReactDOM from 'react-dom/client';
+import { ColorSchemeScript, MantineProvider, mantineHtmlProps } from '@mantine/core';
+import { BrowserRouter } from 'react-router-dom';
+import './index.css';
+import App from './App';
+import reportWebVitals from './reportWebVitals';
+
+const root = ReactDOM.createRoot(document.getElementById('root')); // Finds the root DOM element
+root.render(
+  <React.StrictMode>
+    <ColorSchemeScript />
+    <MantineProvider withGlobalStyles withNormalizeCSS>
+      <BrowserRouter>
+        <App />
+      </BrowserRouter>
+    </MantineProvider>
+  </React.StrictMode>
+);
+
+reportWebVitals();

frontend/src/logo.svg

@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 841.9 595.3"><g fill="#61DAFB"><path d="M666.3 296.5c0-32.5-40.7-63.3-103.1-82.4 14.4-63.6 8-114.2-20.2-130.4-6.5-3.8-14.1-5.6-22.4-5.6v22.3c4.6 0 8.3.9 11.4 2.6 13.6 7.8 19.5 37.5 14.9 75.7-1.1 9.4-2.9 19.3-5.1 29.4-19.6-4.8-41-8.5-63.5-10.9-13.5-18.5-27.5-35.3-41.6-50 32.6-30.3 63.2-46.9 84-46.9V78c-27.5 0-63.5 19.6-99.9 53.6-36.4-33.8-72.4-53.2-99.9-53.2v22.3c20.7 0 51.4 16.5 84 46.6-14 14.7-28 31.4-41.3 49.9-22.6 2.4-44 6.1-63.6 11-2.3-10-4-19.7-5.2-29-4.7-38.2 1.1-67.9 14.6-75.8 3-1.8 6.9-2.6 11.5-2.6V78.5c-8.4 0-16 1.8-22.6 5.6-28.1 16.2-34.4 66.7-19.9 130.1-62.2 19.2-102.7 49.9-102.7 82.3 0 32.5 40.7 63.3 103.1 82.4-14.4 63.6-8 114.2 20.2 130.4 6.5 3.8 14.1 5.6 22.5 5.6 27.5 0 63.5-19.6 99.9-53.6 36.4 33.8 72.4 53.2 99.9 53.2 8.4 0 16-1.8 22.6-5.6 28.1-16.2 34.4-66.7 19.9-130.1 62-19.1 102.5-49.9 102.5-82.3zm-130.2-66.7c-3.7 12.9-8.3 26.2-13.5 39.5-4.1-8-8.4-16-13.1-24-4.6-8-9.5-15.8-14.4-23.4 14.2 2.1 27.9 4.7 41 7.9zm-45.8 106.5c-7.8 13.5-15.8 26.3-24.1 38.2-14.9 1.3-30 2-45.2 2-15.1 0-30.2-.7-45-1.9-8.3-11.9-16.4-24.6-24.2-38-7.6-13.1-14.5-26.4-20.8-39.8 6.2-13.4 13.2-26.8 20.7-39.9 7.8-13.5 15.8-26.3 24.1-38.2 14.9-1.3 30-2 45.2-2 15.1 0 30.2.7 45 1.9 8.3 11.9 16.4 24.6 24.2 38 7.6 13.1 14.5 26.4 20.8 39.8-6.3 13.4-13.2 26.8-20.7 39.9zm32.3-13c5.4 13.4 10 26.8 13.8 39.8-13.1 3.2-26.9 5.9-41.2 8 4.9-7.7 9.8-15.6 14.4-23.7 4.6-8 8.9-16.1 13-24.1zM421.2 430c-9.3-9.6-18.6-20.3-27.8-32 9 .4 18.2.7 27.5.7 9.4 0 18.7-.2 27.8-.7-9 11.7-18.3 22.4-27.5 32zm-74.4-58.9c-14.2-2.1-27.9-4.7-41-7.9 3.7-12.9 8.3-26.2 13.5-39.5 4.1 8 8.4 16 13.1 24 4.7 8 9.5 15.8 14.4 23.4zM420.7 163c9.3 9.6 18.6 20.3 27.8 32-9-.4-18.2-.7-27.5-.7-9.4 0-18.7.2-27.8.7 9-11.7 18.3-22.4 27.5-32zm-74 58.9c-4.9 7.7-9.8 15.6-14.4 23.7-4.6 8-8.9 16-13 24-5.4-13.4-10-26.8-13.8-39.8 13.1-3.1 26.9-5.8 41.2-7.9zm-90.5 125.2c-35.4-15.1-58.3-34.9-58.3-50.6 0-15.7 22.9-35.6 58.3-50.6 8.6-3.7 18-7 27.7-10.1 5.7 19.6 13.2 40 22.5 60.9-9.2 20.8-16.6 41.1-22.2 60.6-9.9-3.1-19.3-6.5-28-10.2zM310 490c-13.6-7.8-19.5-37.5-14.9-75.7 1.1-9.4 2.9-19.3 5.1-29.4 19.6 4.8 41 8.5 63.5 10.9 13.5 18.5 27.5 35.3 41.6 50-32.6 30.3-63.2 46.9-84 46.9-4.5-.1-8.3-1-11.3-2.7zm237.2-76.2c4.7 38.2-1.1 67.9-14.6 75.8-3 1.8-6.9 2.6-11.5 2.6-20.7 0-51.4-16.5-84-46.6 14-14.7 28-31.4 41.3-49.9 22.6-2.4 44-6.1 63.6-11 2.3 10.1 4.1 19.8 5.2 29.1zm38.5-66.7c-8.6 3.7-18 7-27.7 10.1-5.7-19.6-13.2-40-22.5-60.9 9.2-20.8 16.6-41.1 22.2-60.6 9.9 3.1 19.3 6.5 28.1 10.2 35.4 15.1 58.3 34.9 58.3 50.6-.1 15.7-23 35.6-58.4 50.6zM320.8 78.4z"/><circle cx="420.9" cy="296.5" r="45.7"/><path d="M520.5 78.1z"/></g></svg>

frontend/src/output.css

@@ -0,0 +1,362 @@
+*, ::before, ::after {
+    --tw-border-spacing-x: 0;
+    --tw-border-spacing-y: 0;
+    --tw-translate-x: 0;
+    --tw-translate-y: 0;
+    --tw-rotate: 0;
+    --tw-skew-x: 0;
+    --tw-skew-y: 0;
+    --tw-scale-x: 1;
+    --tw-scale-y: 1;
+    --tw-pan-x:  ;
+    --tw-pan-y:  ;
+    --tw-pinch-zoom:  ;
+    --tw-scroll-snap-strictness: proximity;
+    --tw-gradient-from-position:  ;
+    --tw-gradient-via-position:  ;
+    --tw-gradient-to-position:  ;
+    --tw-ordinal:  ;
+    --tw-slashed-zero:  ;
+    --tw-numeric-figure:  ;
+    --tw-numeric-spacing:  ;
+    --tw-numeric-fraction:  ;
+    --tw-ring-inset:  ;
+    --tw-ring-offset-width: 0px;
+    --tw-ring-offset-color: #fff;
+    --tw-ring-color: rgb(59 130 246 / 0.5);
+    --tw-ring-offset-shadow: 0 0 #0000;
+    --tw-ring-shadow: 0 0 #0000;
+    --tw-shadow: 0 0 #0000;
+    --tw-shadow-colored: 0 0 #0000;
+    --tw-blur:  ;
+    --tw-brightness:  ;
+    --tw-contrast:  ;
+    --tw-grayscale:  ;
+    --tw-hue-rotate:  ;
+    --tw-invert:  ;
+    --tw-saturate:  ;
+    --tw-sepia:  ;
+    --tw-drop-shadow:  ;
+    --tw-backdrop-blur:  ;
+    --tw-backdrop-brightness:  ;
+    --tw-backdrop-contrast:  ;
+    --tw-backdrop-grayscale:  ;
+    --tw-backdrop-hue-rotate:  ;
+    --tw-backdrop-invert:  ;
+    --tw-backdrop-opacity:  ;
+    --tw-backdrop-saturate:  ;
+    --tw-backdrop-sepia:  ;
+    --tw-contain-size:  ;
+    --tw-contain-layout:  ;
+    --tw-contain-paint:  ;
+    --tw-contain-style:  
+}
+::backdrop {
+    --tw-border-spacing-x: 0;
+    --tw-border-spacing-y: 0;
+    --tw-translate-x: 0;
+    --tw-translate-y: 0;
+    --tw-rotate: 0;
+    --tw-skew-x: 0;
+    --tw-skew-y: 0;
+    --tw-scale-x: 1;
+    --tw-scale-y: 1;
+    --tw-pan-x:  ;
+    --tw-pan-y:  ;
+    --tw-pinch-zoom:  ;
+    --tw-scroll-snap-strictness: proximity;
+    --tw-gradient-from-position:  ;
+    --tw-gradient-via-position:  ;
+    --tw-gradient-to-position:  ;
+    --tw-ordinal:  ;
+    --tw-slashed-zero:  ;
+    --tw-numeric-figure:  ;
+    --tw-numeric-spacing:  ;
+    --tw-numeric-fraction:  ;
+    --tw-ring-inset:  ;
+    --tw-ring-offset-width: 0px;
+    --tw-ring-offset-color: #fff;
+    --tw-ring-color: rgb(59 130 246 / 0.5);
+    --tw-ring-offset-shadow: 0 0 #0000;
+    --tw-ring-shadow: 0 0 #0000;
+    --tw-shadow: 0 0 #0000;
+    --tw-shadow-colored: 0 0 #0000;
+    --tw-blur:  ;
+    --tw-brightness:  ;
+    --tw-contrast:  ;
+    --tw-grayscale:  ;
+    --tw-hue-rotate:  ;
+    --tw-invert:  ;
+    --tw-saturate:  ;
+    --tw-sepia:  ;
+    --tw-drop-shadow:  ;
+    --tw-backdrop-blur:  ;
+    --tw-backdrop-brightness:  ;
+    --tw-backdrop-contrast:  ;
+    --tw-backdrop-grayscale:  ;
+    --tw-backdrop-hue-rotate:  ;
+    --tw-backdrop-invert:  ;
+    --tw-backdrop-opacity:  ;
+    --tw-backdrop-saturate:  ;
+    --tw-backdrop-sepia:  ;
+    --tw-contain-size:  ;
+    --tw-contain-layout:  ;
+    --tw-contain-paint:  ;
+    --tw-contain-style:  
+}
+.mb-3 {
+    margin-bottom: 0.75rem
+}
+.mb-4 {
+    margin-bottom: 1rem
+}
+.mr-2 {
+    margin-right: 0.5rem
+}
+.mt-2 {
+    margin-top: 0.5rem
+}
+.mt-4 {
+    margin-top: 1rem
+}
+.block {
+    display: block
+}
+.flex {
+    display: flex
+}
+.hidden {
+    display: none
+}
+.h-6 {
+    height: 1.5rem
+}
+.h-full {
+    height: 100%
+}
+.h-screen {
+    height: 100vh
+}
+.w-6 {
+    width: 1.5rem
+}
+.w-64 {
+    width: 16rem
+}
+.w-72 {
+    width: 18rem
+}
+.w-full {
+    width: 100%
+}
+.max-w-3xl {
+    max-width: 48rem
+}
+.flex-1 {
+    flex: 1 1 0%
+}
+.cursor-pointer {
+    cursor: pointer
+}
+.list-disc {
+    list-style-type: disc
+}
+.flex-col {
+    flex-direction: column
+}
+.items-center {
+    align-items: center
+}
+.justify-center {
+    justify-content: center
+}
+.justify-between {
+    justify-content: space-between
+}
+.space-x-2 > :not([hidden]) ~ :not([hidden]) {
+    --tw-space-x-reverse: 0;
+    margin-right: calc(0.5rem * var(--tw-space-x-reverse));
+    margin-left: calc(0.5rem * calc(1 - var(--tw-space-x-reverse)))
+}
+.space-x-3 > :not([hidden]) ~ :not([hidden]) {
+    --tw-space-x-reverse: 0;
+    margin-right: calc(0.75rem * var(--tw-space-x-reverse));
+    margin-left: calc(0.75rem * calc(1 - var(--tw-space-x-reverse)))
+}
+.space-y-2 > :not([hidden]) ~ :not([hidden]) {
+    --tw-space-y-reverse: 0;
+    margin-top: calc(0.5rem * calc(1 - var(--tw-space-y-reverse)));
+    margin-bottom: calc(0.5rem * var(--tw-space-y-reverse))
+}
+.space-y-3 > :not([hidden]) ~ :not([hidden]) {
+    --tw-space-y-reverse: 0;
+    margin-top: calc(0.75rem * calc(1 - var(--tw-space-y-reverse)));
+    margin-bottom: calc(0.75rem * var(--tw-space-y-reverse))
+}
+.space-y-4 > :not([hidden]) ~ :not([hidden]) {
+    --tw-space-y-reverse: 0;
+    margin-top: calc(1rem * calc(1 - var(--tw-space-y-reverse)));
+    margin-bottom: calc(1rem * var(--tw-space-y-reverse))
+}
+.overflow-hidden {
+    overflow: hidden
+}
+.overflow-y-auto {
+    overflow-y: auto
+}
+.rounded {
+    border-radius: 0.25rem
+}
+.rounded-md {
+    border-radius: 0.375rem
+}
+.border {
+    border-width: 1px
+}
+.border-b {
+    border-bottom-width: 1px
+}
+.border-l {
+    border-left-width: 1px
+}
+.border-r {
+    border-right-width: 1px
+}
+.border-none {
+    border-style: none
+}
+.bg-blue-600 {
+    --tw-bg-opacity: 1;
+    background-color: rgb(37 99 235 / var(--tw-bg-opacity, 1))
+}
+.bg-gray-100 {
+    --tw-bg-opacity: 1;
+    background-color: rgb(243 244 246 / var(--tw-bg-opacity, 1))
+}
+.bg-gray-50 {
+    --tw-bg-opacity: 1;
+    background-color: rgb(249 250 251 / var(--tw-bg-opacity, 1))
+}
+.bg-green-600 {
+    --tw-bg-opacity: 1;
+    background-color: rgb(22 163 74 / var(--tw-bg-opacity, 1))
+}
+.bg-white {
+    --tw-bg-opacity: 1;
+    background-color: rgb(255 255 255 / var(--tw-bg-opacity, 1))
+}
+.p-2 {
+    padding: 0.5rem
+}
+.p-4 {
+    padding: 1rem
+}
+.px-2 {
+    padding-left: 0.5rem;
+    padding-right: 0.5rem
+}
+.px-4 {
+    padding-left: 1rem;
+    padding-right: 1rem
+}
+.py-1 {
+    padding-top: 0.25rem;
+    padding-bottom: 0.25rem
+}
+.py-2 {
+    padding-top: 0.5rem;
+    padding-bottom: 0.5rem
+}
+.pl-5 {
+    padding-left: 1.25rem
+}
+.text-left {
+    text-align: left
+}
+.text-center {
+    text-align: center
+}
+.text-lg {
+    font-size: 1.125rem;
+    line-height: 1.75rem
+}
+.text-sm {
+    font-size: 0.875rem;
+    line-height: 1.25rem
+}
+.text-xl {
+    font-size: 1.25rem;
+    line-height: 1.75rem
+}
+.text-xs {
+    font-size: 0.75rem;
+    line-height: 1rem
+}
+.font-medium {
+    font-weight: 500
+}
+.font-semibold {
+    font-weight: 600
+}
+.leading-none {
+    line-height: 1
+}
+.text-blue-600 {
+    --tw-text-opacity: 1;
+    color: rgb(37 99 235 / var(--tw-text-opacity, 1))
+}
+.text-gray-500 {
+    --tw-text-opacity: 1;
+    color: rgb(107 114 128 / var(--tw-text-opacity, 1))
+}
+.text-gray-600 {
+    --tw-text-opacity: 1;
+    color: rgb(75 85 99 / var(--tw-text-opacity, 1))
+}
+.text-red-500 {
+    --tw-text-opacity: 1;
+    color: rgb(239 68 68 / var(--tw-text-opacity, 1))
+}
+.text-red-600 {
+    --tw-text-opacity: 1;
+    color: rgb(220 38 38 / var(--tw-text-opacity, 1))
+}
+.text-white {
+    --tw-text-opacity: 1;
+    color: rgb(255 255 255 / var(--tw-text-opacity, 1))
+}
+.underline {
+    text-decoration-line: underline
+}
+.shadow {
+    --tw-shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
+    --tw-shadow-colored: 0 1px 3px 0 var(--tw-shadow-color), 0 1px 2px -1px var(--tw-shadow-color);
+    box-shadow: var(--tw-ring-offset-shadow, 0 0 #0000), var(--tw-ring-shadow, 0 0 #0000), var(--tw-shadow)
+}
+.shadow-sm {
+    --tw-shadow: 0 1px 2px 0 rgb(0 0 0 / 0.05);
+    --tw-shadow-colored: 0 1px 2px 0 var(--tw-shadow-color);
+    box-shadow: var(--tw-ring-offset-shadow, 0 0 #0000), var(--tw-ring-shadow, 0 0 #0000), var(--tw-shadow)
+}
+.grayscale {
+    --tw-grayscale: grayscale(100%);
+    filter: var(--tw-blur) var(--tw-brightness) var(--tw-contrast) var(--tw-grayscale) var(--tw-hue-rotate) var(--tw-invert) var(--tw-saturate) var(--tw-sepia) var(--tw-drop-shadow)
+}
+.filter {
+    filter: var(--tw-blur) var(--tw-brightness) var(--tw-contrast) var(--tw-grayscale) var(--tw-hue-rotate) var(--tw-invert) var(--tw-saturate) var(--tw-sepia) var(--tw-drop-shadow)
+}
+.hover\:bg-blue-700:hover {
+    --tw-bg-opacity: 1;
+    background-color: rgb(29 78 216 / var(--tw-bg-opacity, 1))
+}
+.hover\:bg-gray-200:hover {
+    --tw-bg-opacity: 1;
+    background-color: rgb(229 231 235 / var(--tw-bg-opacity, 1))
+}
+.hover\:bg-green-700:hover {
+    --tw-bg-opacity: 1;
+    background-color: rgb(21 128 61 / var(--tw-bg-opacity, 1))
+}
+.hover\:underline:hover {
+    text-decoration-line: underline
+}

frontend/src/pages/HomePage.js

@@ -0,0 +1,201 @@
+import React, { useState } from "react";
+import AddToPhotosIcon from "@mui/icons-material/AddToPhotos";
+import ContentCutIcon from "@mui/icons-material/ContentCut";
+import ZoomInMapIcon from "@mui/icons-material/ZoomInMap";
+import InsertDriveFileIcon from "@mui/icons-material/InsertDriveFile";
+import VisibilityIcon from "@mui/icons-material/Visibility";
+import EditNoteIcon from "@mui/icons-material/EditNote";
+import { Group, SegmentedControl, Paper, Center, Stack, Button, Text, Box } from "@mantine/core";
+
+import FileManager from "../components/FileManager";
+import SplitPdfPanel from "../tools/Split";
+import CompressPdfPanel from "../tools/Compress";
+import MergePdfPanel from "../tools/Merge";
+import PageEditor from "../components/PageEditor";
+import Viewer from "../components/Viewer";
+
+const toolRegistry = {
+  split: { icon: <ContentCutIcon />, name: "Split PDF", component: SplitPdfPanel, view: "viewer" },
+  compress: { icon: <ZoomInMapIcon />, name: "Compress PDF", component: CompressPdfPanel, view: "viewer" },
+  merge: { icon: <AddToPhotosIcon />, name: "Merge PDFs", component: MergePdfPanel, view: "fileManager" },
+};
+
+const VIEW_OPTIONS = [
+  {
+    label: (
+      <Group gap={4}>
+        <VisibilityIcon fontSize="small" />
+      </Group>
+    ),
+    value: "viewer",
+  },
+  {
+    label: (
+      <Group gap={4}>
+        <EditNoteIcon fontSize="small" />
+      </Group>
+    ),
+    value: "pageEditor",
+  },
+  {
+    label: (
+      <Group gap={4}>
+        <InsertDriveFileIcon fontSize="small" />
+      </Group>
+    ),
+    value: "fileManager",
+  },
+];
+
+export default function HomePage() {
+  const [selectedToolKey, setSelectedToolKey] = useState("split");
+  const [currentView, setCurrentView] = useState("viewer");
+  const [pdfFile, setPdfFile] = useState(null);
+  const [files, setFiles] = useState([]);
+  const [downloadUrl, setDownloadUrl] = useState(null);
+
+  const selectedTool = toolRegistry[selectedToolKey];
+
+  return (
+    <Group align="flex-start" spacing={0} style={{ minHeight: "100vh" }}>
+      {/* Left: Tool Picker */}
+      <Box
+        style={{
+          width: 220,
+          background: "#f8f9fa",
+          borderRight: "1px solid #e9ecef",
+          minHeight: "100vh",
+          padding: 16,
+          position: "fixed",
+          left: 0,
+          top: 0,
+          bottom: 0,
+          zIndex: 100,
+          overflowY: "auto",
+        }}
+      >
+        <Text size="lg" weight={500} mb="md">
+          Tools
+        </Text>
+        <Stack spacing="sm">
+          {Object.entries(toolRegistry).map(([id, { icon, name }]) => (
+            <Button
+              key={id}
+              variant={selectedToolKey === id ? "filled" : "subtle"}
+              leftIcon={icon}
+              onClick={() => {
+                setSelectedToolKey(id);
+                if (toolRegistry[id].view) setCurrentView(toolRegistry[id].view);
+              }}
+              fullWidth
+              size="md"
+              radius="md"
+            >
+              {name}
+            </Button>
+          ))}
+        </Stack>
+      </Box>
+
+      {/* Middle: Main View (Viewer, Editor, Manager) */}
+      <Box
+        style={{
+          width: "calc(100vw - 220px - 380px)",
+          marginLeft: 220,
+          marginRight: 380,
+          padding: 24,
+          background: "#fff",
+          position: "relative",
+          minHeight: "100vh",
+          height: "100vh",
+          overflowY: "auto",
+        }}
+      >
+        <Center>
+          <Paper
+            radius="xl"
+            shadow="sm"
+            p={4}
+            style={{
+              display: "inline-block",
+              marginTop: 8,
+              marginBottom: 24,
+              background: "#f8f9fa",
+              zIndex: 10,
+            }}
+          >
+            <SegmentedControl
+              data={VIEW_OPTIONS}
+              value={currentView}
+              onChange={setCurrentView}
+              color="blue"
+              radius="xl"
+              size="md"
+            />
+          </Paper>
+        </Center>
+        <Box>
+          {(currentView === "viewer" || currentView === "pageEditor") && !pdfFile ? (
+            <FileManager
+              files={files}
+              setFiles={setFiles}
+              setPdfFile={setPdfFile}
+              setCurrentView={setCurrentView}
+            />
+          ) : currentView === "viewer" ? (
+            <Viewer
+              pdfFile={pdfFile}
+              setPDFFile={setPdfFile}
+              downloadUrl={downloadUrl}
+              setDownloadUrl={setDownloadUrl}
+            />
+          ) : currentView === "pageEditor" ? (
+            <PageEditor
+              file={pdfFile}
+              setFile={setPdfFile}
+              downloadUrl={downloadUrl}
+              setDownloadUrl={setDownloadUrl}
+            />
+          ) : (
+            <FileManager
+              files={files}
+              setFiles={setFiles}
+              setPdfFile={setPdfFile}
+              setCurrentView={setCurrentView}
+            />
+          )}
+        </Box>
+      </Box>
+      {/* Right: Tool Interaction */}
+      <Box
+        style={{
+          width: 380,
+          background: "#f8f9fa",
+          borderLeft: "1px solid #e9ecef",
+          minHeight: "100vh",
+          padding: 24,
+          gap: 16,
+          position: "fixed",
+          right: 0,
+          top: 0,
+          bottom: 0,
+          zIndex: 100,
+          overflowY: "auto",
+        }}
+      >
+        {selectedTool && selectedTool.component && (
+          <>
+            {React.createElement(selectedTool.component, {
+              file: pdfFile,
+              setPdfFile,
+              files,
+              setFiles,
+              downloadUrl,
+              setDownloadUrl,
+            })}
+            </>
+        )}
+      </Box>
+    </Group>
+  );
+}

frontend/src/reportWebVitals.js

@@ -0,0 +1,13 @@
+const reportWebVitals = onPerfEntry => {
+  if (onPerfEntry && onPerfEntry instanceof Function) {
+    import('web-vitals').then(({ getCLS, getFID, getFCP, getLCP, getTTFB }) => {
+      getCLS(onPerfEntry);
+      getFID(onPerfEntry);
+      getFCP(onPerfEntry);
+      getLCP(onPerfEntry);
+      getTTFB(onPerfEntry);
+    });
+  }
+};
+
+export default reportWebVitals;

frontend/src/setupTests.js

@@ -0,0 +1,5 @@
+// jest-dom adds custom jest matchers for asserting on DOM nodes.
+// allows you to do things like:
+// expect(element).toHaveTextContent(/react/i)
+// learn more: https://github.com/testing-library/jest-dom
+import '@testing-library/jest-dom';

frontend/src/tools/Compress.js

@@ -0,0 +1,113 @@
+import React, { useState } from "react";
+import { Stack, Slider, Group, Text, Button, Checkbox, TextInput, Paper } from "@mantine/core";
+
+export default function CompressPdfPanel({ files = [], setDownloadUrl, setLoading }) {
+  const [selected, setSelected] = useState(files.map(() => false));
+  const [compressionLevel, setCompressionLevel] = useState(5); // 1-9, default 5
+  const [grayscale, setGrayscale] = useState(false);
+  const [removeMetadata, setRemoveMetadata] = useState(false);
+  const [expectedSize, setExpectedSize] = useState("");
+  const [aggressive, setAggressive] = useState(false);
+  const [localLoading, setLocalLoading] = useState(false);
+
+  // Update selection state if files prop changes
+  React.useEffect(() => {
+    setSelected(files.map(() => false));
+  }, [files]);
+
+  const handleCheckbox = idx => {
+    setSelected(sel => sel.map((v, i) => (i === idx ? !v : v)));
+  };
+
+  const handleCompress = async () => {
+    const selectedFiles = files.filter((_, i) => selected[i]);
+    if (selectedFiles.length === 0) return;
+    setLocalLoading(true);
+    setLoading?.(true);
+
+    const formData = new FormData();
+    selectedFiles.forEach(file => formData.append("fileInput", file));
+    formData.append("compressionLevel", compressionLevel);
+    formData.append("grayscale", grayscale);
+    formData.append("removeMetadata", removeMetadata);
+    formData.append("aggressive", aggressive);
+    if (expectedSize) formData.append("expectedSize", expectedSize);
+
+    try {
+      const res = await fetch("/api/v1/general/compress-pdf", {
+        method: "POST",
+        body: formData,
+      });
+      const blob = await res.blob();
+      setDownloadUrl(URL.createObjectURL(blob));
+    } finally {
+      setLocalLoading(false);
+      setLoading?.(false);
+    }
+  };
+
+  return (
+    <Paper shadow="xs" p="md" radius="md" withBorder>
+      <Stack>
+        <Text weight={500} mb={4}>Select files to compress:</Text>
+        <Stack spacing={4}>
+          {files.length === 0 && <Text color="dimmed" size="sm">No files loaded.</Text>}
+          {files.map((file, idx) => (
+            <Checkbox
+              key={file.name + idx}
+              label={file.name}
+              checked={selected[idx] || false}
+              onChange={() => handleCheckbox(idx)}
+            />
+          ))}
+        </Stack>
+        <Stack spacing={4} mb={14}>
+          <Text size="sm" style={{ minWidth: 140 }}>Compression Level</Text>
+          <Slider
+            min={1}
+            max={9}
+            step={1}
+            value={compressionLevel}
+            onChange={setCompressionLevel}
+            marks={[
+              { value: 1, label: "1" },
+              { value: 5, label: "5" },
+              { value: 9, label: "9" },
+            ]}
+            style={{ flex: 1 }}
+          />
+        </Stack >
+        <Checkbox
+          label="Convert images to grayscale"
+          checked={grayscale}
+          onChange={e => setGrayscale(e.currentTarget.checked)}
+        />
+        <Checkbox
+          label="Remove PDF metadata"
+          checked={removeMetadata}
+          onChange={e => setRemoveMetadata(e.currentTarget.checked)}
+        />
+        <Checkbox
+          label="Aggressive compression (may reduce quality)"
+          checked={aggressive}
+          onChange={e => setAggressive(e.currentTarget.checked)}
+        />
+        <TextInput
+          label="Expected output size (e.g. 2MB, 500KB)"
+          placeholder="Optional"
+          value={expectedSize}
+          onChange={e => setExpectedSize(e.currentTarget.value)}
+        />
+        <Button
+          onClick={handleCompress}
+          loading={localLoading}
+          disabled={selected.every(v => !v)}
+          fullWidth
+          mt="md"
+        >
+          Compress Selected PDF{selected.filter(Boolean).length > 1 ? "s" : ""}
+        </Button>
+      </Stack>
+    </Paper>
+  );
+}

frontend/src/tools/Merge.js

@@ -0,0 +1,101 @@
+import React, { useState, useEffect } from "react";
+
+export default function MergePdfPanel({ files, setDownloadUrl }) {
+  const [selectedFiles, setSelectedFiles] = useState([]);
+  const [downloadUrl, setLocalDownloadUrl] = useState(null); // Local state for download URL
+  const [isLoading, setIsLoading] = useState(false); // Loading state
+  const [errorMessage, setErrorMessage] = useState(null); // Error message state
+
+  // Sync selectedFiles with files whenever files change
+  useEffect(() => {
+    setSelectedFiles(files.map(() => true)); // Select all files by default
+  }, [files]);
+
+  const handleMerge = async () => {
+    const filesToMerge = files.filter((_, index) => selectedFiles[index]);
+
+    if (filesToMerge.length < 2) {
+      alert("Please select at least two PDFs to merge.");
+      return;
+    }
+
+    const formData = new FormData();
+    filesToMerge.forEach((file) => formData.append("fileInput", file)); // Use "fileInput" as the key
+
+    setIsLoading(true); // Start loading
+    setErrorMessage(null); // Clear previous errors
+
+    try {
+      const response = await fetch("/api/v1/general/merge-pdfs", {
+        method: "POST",
+        body: formData,
+      });
+
+      if (!response.ok) {
+        const errorText = await response.text();
+        throw new Error(`Failed to merge PDFs: ${errorText}`);
+      }
+
+      const blob = await response.blob();
+      const downloadUrl = URL.createObjectURL(blob);
+      setDownloadUrl(downloadUrl); // Pass to parent component
+      setLocalDownloadUrl(downloadUrl); // Store locally for download button
+    } catch (error) {
+      console.error("Error merging PDFs:", error);
+      setErrorMessage(error.message); // Set error message
+    } finally {
+      setIsLoading(false); // Stop loading
+    }
+  };
+
+  const handleCheckboxChange = (index) => {
+    setSelectedFiles((prevSelectedFiles) =>
+      prevSelectedFiles.map((selected, i) => (i === index ? !selected : selected))
+    );
+  };
+
+  return (
+    <div className="space-y-4">
+      <h3 className="font-semibold text-lg">Merge PDFs</h3>
+      <ul className="list-disc pl-5 text-sm">
+        {files.map((file, index) => (
+          <li key={index} className="flex items-center space-x-2">
+            <input
+              type="checkbox"
+              checked={selectedFiles[index]}
+              onChange={() => handleCheckboxChange(index)}
+              className="form-checkbox"
+            />
+            <span>{file.name}</span>
+          </li>
+        ))}
+      </ul>
+      {files.filter((_, index) => selectedFiles[index]).length < 2 && (
+        <p className="text-sm text-red-500">
+          Please select at least two PDFs to merge.
+        </p>
+      )}
+      <button
+        onClick={handleMerge}
+        className="px-4 py-2 bg-blue-600 text-white rounded hover:bg-blue-700"
+        disabled={files.filter((_, index) => selectedFiles[index]).length < 2 || isLoading}
+      >
+        {isLoading ? "Merging..." : "Merge PDFs"}
+      </button>
+      {errorMessage && (
+        <p className="text-sm text-red-500 mt-2">
+          {errorMessage}
+        </p>
+      )}
+      {downloadUrl && (
+        <a
+          href={downloadUrl}
+          download="merged.pdf"
+          className="block mt-4 px-4 py-2 bg-green-600 text-white rounded hover:bg-green-700 text-center"
+        >
+          Download Merged PDF
+        </a>
+      )}
+    </div>
+  );
+}

frontend/src/tools/Split.js

@@ -0,0 +1,208 @@
+import React, { useState } from "react";
+import axios from "axios";
+import {
+  Button,
+  Select,
+  TextInput,
+  Checkbox,
+  Notification,
+  Stack,
+} from "@mantine/core";
+import DownloadIcon from "@mui/icons-material/Download";
+
+export default function SplitPdfPanel({ file, downloadUrl, setDownloadUrl }) {
+  const [mode, setMode] = useState("byPages");
+  const [pageNumbers, setPageNumbers] = useState("");
+
+  const [horizontalDivisions, setHorizontalDivisions] = useState("0");
+  const [verticalDivisions, setVerticalDivisions] = useState("1");
+  const [mergeSections, setMergeSections] = useState(false);
+
+  const [splitType, setSplitType] = useState("size");
+  const [splitValue, setSplitValue] = useState("");
+
+  const [bookmarkLevel, setBookmarkLevel] = useState("0");
+  const [includeMetadata, setIncludeMetadata] = useState(false);
+  const [allowDuplicates, setAllowDuplicates] = useState(false);
+
+  const [status, setStatus] = useState("");
+  const [isLoading, setIsLoading] = useState(false);
+  const [errorMessage, setErrorMessage] = useState(null);
+
+  const handleSubmit = async (e) => {
+    e.preventDefault();
+    if (!file) {
+      setStatus("Please upload a PDF first.");
+      return;
+    }
+
+    const formData = new FormData();
+    formData.append("fileInput", file.file);
+
+    let endpoint = "";
+
+    switch (mode) {
+      case "byPages":
+        formData.append("pageNumbers", pageNumbers);
+        endpoint = "/api/v1/general/split-pages";
+        break;
+      case "bySections":
+        formData.append("horizontalDivisions", horizontalDivisions);
+        formData.append("verticalDivisions", verticalDivisions);
+        formData.append("merge", mergeSections);
+        endpoint = "/api/v1/general/split-pdf-by-sections";
+        break;
+      case "bySizeOrCount":
+        formData.append("splitType", splitType === "size" ? 0 : splitType === "pages" ? 1 : 2);
+        formData.append("splitValue", splitValue);
+        endpoint = "/api/v1/general/split-by-size-or-count";
+        break;
+      case "byChapters":
+        formData.append("bookmarkLevel", bookmarkLevel);
+        formData.append("includeMetadata", includeMetadata);
+        formData.append("allowDuplicates", allowDuplicates);
+        endpoint = "/api/v1/general/split-pdf-by-chapters";
+        break;
+      default:
+        return;
+    }
+
+    setStatus("Processing split...");
+    setIsLoading(true);
+    setErrorMessage(null);
+
+    try {
+      const response = await axios.post(endpoint, formData, { responseType: "blob" });
+      const blob = new Blob([response.data], { type: "application/zip" });
+      const url = window.URL.createObjectURL(blob);
+      setDownloadUrl(url);
+      setStatus("Download ready.");
+    } catch (error) {
+      console.error(error);
+      setErrorMessage(error.response?.data || "An error occurred while splitting the PDF.");
+      setStatus("Split failed.");
+    } finally {
+      setIsLoading(false);
+    }
+  };
+
+  return (
+    <form onSubmit={handleSubmit} >
+      <h3 className="font-semibold">Split PDF</h3>
+      <Stack spacing="sm" mb={16}>
+      <Select
+        label="Split Mode"
+        value={mode}
+        onChange={setMode}
+        data={[
+          { value: "byPages", label: "Split by Pages (e.g. 1,3,5-10)" },
+          { value: "bySections", label: "Split by Grid Sections" },
+          { value: "bySizeOrCount", label: "Split by Size or Count" },
+          { value: "byChapters", label: "Split by Chapters" },
+        ]}
+      />
+      {mode === "byPages" && (
+        <TextInput
+          label="Pages"
+          placeholder="e.g. 1,3,5-10"
+          value={pageNumbers}
+          onChange={(e) => setPageNumbers(e.target.value)}
+        />
+      )}
+
+      {mode === "bySections" && (
+        <Stack spacing="sm" gap={16}>
+          <TextInput
+            label="Horizontal Divisions"
+            type="number"
+            min="0"
+            max="300"
+            value={horizontalDivisions}
+            onChange={(e) => setHorizontalDivisions(e.target.value)}
+          />
+          <TextInput
+            label="Vertical Divisions"
+            type="number"
+            min="0"
+            max="300"
+            value={verticalDivisions}
+            onChange={(e) => setVerticalDivisions(e.target.value)}
+          />
+          <Checkbox
+            label="Merge sections into one PDF"
+            checked={mergeSections}
+            onChange={(e) => setMergeSections(e.currentTarget.checked)}
+          />
+        </Stack>
+      )}
+
+      {mode === "bySizeOrCount" && (
+        <Stack spacing="sm" gap={16}>
+          <Select
+            label="Split Type"
+            value={splitType}
+            onChange={setSplitType}
+            data={[
+              { value: "size", label: "By Size" },
+              { value: "pages", label: "By Page Count" },
+              { value: "docs", label: "By Document Count" },
+            ]}
+          />
+          <TextInput
+            label="Split Value"
+            placeholder="e.g. 10MB or 5 pages"
+            value={splitValue}
+            onChange={(e) => setSplitValue(e.target.value)}
+          />
+        </Stack>
+      )}
+
+      {mode === "byChapters" && (
+        <Stack spacing="sm">
+          <TextInput
+            label="Bookmark Level"
+            type="number"
+            value={bookmarkLevel}
+            onChange={(e) => setBookmarkLevel(e.target.value)}
+          />
+          <Checkbox
+            label="Include Metadata"
+            checked={includeMetadata}
+            onChange={(e) => setIncludeMetadata(e.currentTarget.checked)}
+          />
+          <Checkbox
+            label="Allow Duplicate Bookmarks"
+            checked={allowDuplicates}
+            onChange={(e) => setAllowDuplicates(e.currentTarget.checked)}
+          />
+        </Stack>
+      )}
+
+      <Button type="submit" loading={isLoading} fullWidth>
+        {isLoading ? "Processing..." : "Split PDF"}
+      </Button>
+
+      {status && <p className="text-xs text-gray-600">{status}</p>}
+
+      {errorMessage && (
+        <Notification color="red" title="Error" onClose={() => setErrorMessage(null)}>
+          {errorMessage}
+        </Notification>
+      )}
+
+      {status === "Download ready." && downloadUrl && (
+        <Button
+          component="a"
+          href={downloadUrl}
+          download="split_output.zip"
+          leftIcon={<DownloadIcon />}
+          color="green"
+          fullWidth
+        >
+          Download Split PDF
+        </Button>
+      )}
+      </Stack>
+    </form>
+  );
+}

frontend/tailwind.config.js

@@ -0,0 +1,12 @@
+module.exports = {
+  corePlugins: {
+    preflight: false,
+  },
+  content: [
+    "./src/**/*.{js,jsx,ts,tsx}"
+  ],
+  theme: {
+    extend: {},
+  },
+  plugins: [],
+}

src/main/java/stirling/software/SPDF/controller/api/AnalysisController.java

@@ -59,7 +59,8 @@ public class AnalysisController {
             description = "Returns title, author, subject, etc. Input:PDF Output:JSON Type:SISO")
     public Map<String, String> getDocumentProperties(@ModelAttribute PDFFile file)
             throws IOException {
-        // Load the document in read-only mode to prevent modifications and ensure the integrity of the original file.
+        // Load the document in read-only mode to prevent modifications and ensure the integrity of
+        // the original file.
         try (PDDocument document = pdfDocumentFactory.load(file.getFileInput(), true)) {
             PDDocumentInformation info = document.getDocumentInformation();
             Map<String, String> properties = new HashMap<>();

src/main/java/stirling/software/SPDF/controller/api/security/CertSignController.java

@@ -146,8 +146,8 @@ public class CertSignController {
             summary = "Sign PDF with a Digital Certificate",
             description =
                     "This endpoint accepts a PDF file, a digital certificate and related"
-                        + " information to sign the PDF. It then returns the digitally signed PDF"
+                            + " information to sign the PDF. It then returns the digitally signed PDF"
-                        + " file. Input:PDF Output:PDF Type:SISO")
+                            + " file. Input:PDF Output:PDF Type:SISO")
     public ResponseEntity<byte[]> signPDFWithCert(@ModelAttribute SignPDFWithCertRequest request)
             throws Exception {
         MultipartFile pdf = request.getFileInput();

src/main/java/stirling/software/SPDF/controller/web/HomeWebController.java

@@ -1,4 +1,4 @@
-package stirling.software.SPDF.controller.web;
+package stirling.software.SPDF.controller.api;
 
 import java.io.IOException;
 import java.io.InputStream;
@@ -9,10 +9,7 @@ import java.util.Map;
 import org.springframework.core.io.ClassPathResource;
 import org.springframework.core.io.Resource;
 import org.springframework.http.MediaType;
-import org.springframework.stereotype.Controller;
+import org.springframework.web.bind.annotation.*;
-import org.springframework.ui.Model;
-import org.springframework.web.bind.annotation.GetMapping;
-import org.springframework.web.bind.annotation.ResponseBody;
 
 import com.fasterxml.jackson.core.type.TypeReference;
 import com.fasterxml.jackson.databind.ObjectMapper;
@@ -25,65 +22,39 @@ import lombok.extern.slf4j.Slf4j;
 import stirling.software.SPDF.model.ApplicationProperties;
 import stirling.software.SPDF.model.Dependency;
 
-@Controller
+@RestController
-@Slf4j
+@RequestMapping("/api")
 @RequiredArgsConstructor
+@Slf4j
 public class HomeWebController {
 
     private final ApplicationProperties applicationProperties;
 
-    @GetMapping("/about")
+    /** Returns the visibility settings for things like surveys. */
-    @Hidden
+    @GetMapping("/env")
-    public String gameForm(Model model) {
+    public Map<String, Object> getEnvironmentFlags() {
-        model.addAttribute("currentPage", "about");
-        return "about";
-    }
-
-    @GetMapping("/licenses")
-    @Hidden
-    public String licensesForm(Model model) {
-        model.addAttribute("currentPage", "licenses");
-        Resource resource = new ClassPathResource("static/3rdPartyLicenses.json");
-        try {
-            InputStream is = resource.getInputStream();
-            String json = new String(is.readAllBytes(), StandardCharsets.UTF_8);
-            ObjectMapper mapper = new ObjectMapper();
-            Map<String, List<Dependency>> data =
-                    mapper.readValue(json, new TypeReference<Map<String, List<Dependency>>>() {});
-            model.addAttribute("dependencies", data.get("dependencies"));
-        } catch (IOException e) {
-            log.error("exception", e);
-        }
-        return "licenses";
-    }
-
-    @GetMapping("/releases")
-    public String getReleaseNotes(Model model) {
-        return "releases";
-    }
-
-    @GetMapping("/")
-    public String home(Model model) {
-        model.addAttribute("currentPage", "home");
         String showSurvey = System.getenv("SHOW_SURVEY");
         boolean showSurveyValue = showSurvey == null || "true".equalsIgnoreCase(showSurvey);
-        model.addAttribute("showSurveyFromDocker", showSurveyValue);
+        return Map.of("showSurvey", showSurveyValue);
-        return "home";
     }
 
-    @GetMapping("/home")
+    /** Returns the third-party licenses as a JSON list. */
-    public String root(Model model) {
+    @GetMapping("/licenses")
-        return "redirect:/";
+    public List<Dependency> getLicenses() {
-    }
+        Resource resource = new ClassPathResource("static/3rdPartyLicenses.json");
-
+        try (InputStream is = resource.getInputStream()) {
-    @GetMapping("/home-legacy")
+            String json = new String(is.readAllBytes(), StandardCharsets.UTF_8);
-    public String homeLegacy(Model model) {
+            ObjectMapper mapper = new ObjectMapper();
-        model.addAttribute("currentPage", "home-legacy");
+            Map<String, List<Dependency>> data = mapper.readValue(json, new TypeReference<>() {});
-        return "home-legacy";
+            return data.get("dependencies");
+        } catch (IOException e) {
+            log.error("Failed to read licenses JSON", e);
+            throw new RuntimeException("Could not load license data", e);
+        }
     }
 
+    /** Dynamic generation of robots.txt based on configuration. */
     @GetMapping(value = "/robots.txt", produces = MediaType.TEXT_PLAIN_VALUE)
-    @ResponseBody
     @Hidden
     public String getRobotsTxt() {
         Boolean allowGoogle = applicationProperties.getSystem().getGooglevisibility();

src/main/java/stirling/software/SPDF/controller/web/ReactRoutingController.java

@@ -0,0 +1,18 @@
+package stirling.software.SPDF.controller.web;
+
+import org.springframework.stereotype.Controller;
+import org.springframework.web.bind.annotation.GetMapping;
+
+@Controller
+public class ReactRoutingController {
+
+    @GetMapping("/{path:^(?!api|static|robots\\.txt|favicon\\.ico)[^\\.]*$}")
+    public String forwardRootPaths() {
+        return "forward:/index.html";
+    }
+
+    @GetMapping("/{path:^(?!api|static)[^\\.]*}/{subpath:^(?!.*\\.).*$}")
+    public String forwardNestedPaths() {
+        return "forward:/index.html";
+    }
+}

src/main/java/stirling/software/SPDF/model/api/Email.java

@@ -4,7 +4,6 @@ import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
 
 import io.swagger.v3.oas.annotations.media.Schema;
 
-
 import lombok.Data;
 import lombok.EqualsAndHashCode;
 import lombok.NoArgsConstructor;

src/test/java/stirling/software/SPDF/config/security/mail/EmailServiceTest.java

@@ -2,36 +2,32 @@ package stirling.software.SPDF.config.security.mail;
 
 import static org.mockito.Mockito.*;
 
-import jakarta.mail.MessagingException;
-import jakarta.mail.internet.MimeMessage;
 import org.junit.jupiter.api.Test;
 import org.junit.jupiter.api.extension.ExtendWith;
 import org.mockito.InjectMocks;
 import org.mockito.Mock;
 import org.mockito.junit.jupiter.MockitoExtension;
 import org.springframework.mail.javamail.JavaMailSender;
-import org.springframework.mail.javamail.MimeMessageHelper;
 import org.springframework.web.multipart.MultipartFile;
+
+import jakarta.mail.MessagingException;
+import jakarta.mail.internet.MimeMessage;
+
 import stirling.software.SPDF.model.ApplicationProperties;
 import stirling.software.SPDF.model.api.Email;
 
 @ExtendWith(MockitoExtension.class)
 public class EmailServiceTest {
 
-    @Mock
+    @Mock private JavaMailSender mailSender;
-    private JavaMailSender mailSender;
 
-    @Mock
+    @Mock private ApplicationProperties applicationProperties;
-    private ApplicationProperties applicationProperties;
 
-    @Mock
+    @Mock private ApplicationProperties.Mail mailProperties;
-    private ApplicationProperties.Mail mailProperties;
 
-    @Mock
+    @Mock private MultipartFile fileInput;
-    private MultipartFile fileInput;
 
-    @InjectMocks
+    @InjectMocks private EmailService emailService;
-    private EmailService emailService;
 
     @Test
     void testSendEmailWithAttachment() throws MessagingException {

src/test/java/stirling/software/SPDF/controller/api/EmailControllerTest.java

@@ -4,7 +4,6 @@ import static org.mockito.Mockito.*;
 import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.*;
 import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.*;
 
-import jakarta.mail.MessagingException;
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
 import org.junit.jupiter.api.extension.ExtendWith;
@@ -14,6 +13,9 @@ import org.mockito.junit.jupiter.MockitoExtension;
 import org.springframework.test.web.servlet.MockMvc;
 import org.springframework.test.web.servlet.setup.MockMvcBuilders;
 import org.springframework.web.multipart.MultipartFile;
+
+import jakarta.mail.MessagingException;
+
 import stirling.software.SPDF.config.security.mail.EmailService;
 import stirling.software.SPDF.model.api.Email;