diff --git a/src/main/resources/messages_ar_AR.properties b/src/main/resources/messages_ar_AR.properties
index a279ba794..037f398b2 100644
--- a/src/main/resources/messages_ar_AR.properties
+++ b/src/main/resources/messages_ar_AR.properties
@@ -860,7 +860,8 @@ sign.last=Last page
 sign.next=Next page
 sign.previous=Previous page
 sign.maintainRatio=Toggle maintain aspect ratio
-
+sign.undo=Undo
+sign.redo=Redo
 
 #repair
 repair.title=إصلاح
diff --git a/src/main/resources/messages_az_AZ.properties b/src/main/resources/messages_az_AZ.properties
index ae59b7c53..e46bdb51a 100644
--- a/src/main/resources/messages_az_AZ.properties
+++ b/src/main/resources/messages_az_AZ.properties
@@ -860,7 +860,8 @@ sign.last=Son səhifə
 sign.next=Növbəti səhifə
 sign.previous=Əvvəlki səhifə
 sign.maintainRatio=Toggle maintain aspect ratio
-
+sign.undo=Undo
+sign.redo=Redo
 
 #repair
 repair.title=Bərpa Et
diff --git a/src/main/resources/messages_bg_BG.properties b/src/main/resources/messages_bg_BG.properties
index 09af7cbbf..df91050b0 100644
--- a/src/main/resources/messages_bg_BG.properties
+++ b/src/main/resources/messages_bg_BG.properties
@@ -860,7 +860,8 @@ sign.last=Последна страница
 sign.next=Следваща страница
 sign.previous=Предишна стараница
 sign.maintainRatio=Превключване за поддържане на съотношението на страните
-
+sign.undo=Undo
+sign.redo=Redo
 
 #repair
 repair.title=Поправи
diff --git a/src/main/resources/messages_ca_CA.properties b/src/main/resources/messages_ca_CA.properties
index a7da336de..7f0b266ed 100644
--- a/src/main/resources/messages_ca_CA.properties
+++ b/src/main/resources/messages_ca_CA.properties
@@ -860,7 +860,8 @@ sign.last=Last page
 sign.next=Next page
 sign.previous=Previous page
 sign.maintainRatio=Toggle maintain aspect ratio
-
+sign.undo=Undo
+sign.redo=Redo
 
 #repair
 repair.title=Reparar
diff --git a/src/main/resources/messages_cs_CZ.properties b/src/main/resources/messages_cs_CZ.properties
index ae5076197..1a3970f57 100644
--- a/src/main/resources/messages_cs_CZ.properties
+++ b/src/main/resources/messages_cs_CZ.properties
@@ -860,7 +860,8 @@ sign.last=Poslední stránka
 sign.next=Další stránka
 sign.previous=Předchozí stránka
 sign.maintainRatio=Přepnout zachování poměru stran
-
+sign.undo=Undo
+sign.redo=Redo
 
 #repair
 repair.title=Opravit
diff --git a/src/main/resources/messages_da_DK.properties b/src/main/resources/messages_da_DK.properties
index de2a26dd5..4bf0f03a1 100644
--- a/src/main/resources/messages_da_DK.properties
+++ b/src/main/resources/messages_da_DK.properties
@@ -860,7 +860,8 @@ sign.last=Last page
 sign.next=Next page
 sign.previous=Previous page
 sign.maintainRatio=Toggle maintain aspect ratio
-
+sign.undo=Undo
+sign.redo=Redo
 
 #repair
 repair.title=Reparér
diff --git a/src/main/resources/messages_de_DE.properties b/src/main/resources/messages_de_DE.properties
index 401cff58f..6d73e5dca 100644
--- a/src/main/resources/messages_de_DE.properties
+++ b/src/main/resources/messages_de_DE.properties
@@ -860,7 +860,8 @@ sign.last=Letzte Seite
 sign.next=Nächste Seite
 sign.previous=Vorherige Seite
 sign.maintainRatio=Seitenverhältnis beibehalten ein-/ausschalten
-
+sign.undo=Undo
+sign.redo=Redo
 
 #repair
 repair.title=Reparieren
diff --git a/src/main/resources/messages_el_GR.properties b/src/main/resources/messages_el_GR.properties
index 946585931..321bf7459 100644
--- a/src/main/resources/messages_el_GR.properties
+++ b/src/main/resources/messages_el_GR.properties
@@ -860,7 +860,8 @@ sign.last=Τελευταία σελίδα
 sign.next=Επόμενη σελίδα
 sign.previous=Προηγούμενη σελίδα
 sign.maintainRatio=Εναλλαγή διατήρησης αναλογίας διαστάσεων
-
+sign.undo=Undo
+sign.redo=Redo
 
 #repair
 repair.title=Επιδιόρθωση
diff --git a/src/main/resources/messages_en_GB.properties b/src/main/resources/messages_en_GB.properties
index 176a83707..aab945371 100644
--- a/src/main/resources/messages_en_GB.properties
+++ b/src/main/resources/messages_en_GB.properties
@@ -860,7 +860,8 @@ sign.last=Last page
 sign.next=Next page
 sign.previous=Previous page
 sign.maintainRatio=Toggle maintain aspect ratio
-
+sign.undo=Undo
+sign.redo=Redo
 
 #repair
 repair.title=Repair
diff --git a/src/main/resources/messages_en_US.properties b/src/main/resources/messages_en_US.properties
index 3a62c78e1..c5392d419 100644
--- a/src/main/resources/messages_en_US.properties
+++ b/src/main/resources/messages_en_US.properties
@@ -860,7 +860,8 @@ sign.last=Last page
 sign.next=Next page
 sign.previous=Previous page
 sign.maintainRatio=Toggle maintain aspect ratio
-
+sign.undo=Undo
+sign.redo=Redo
 
 #repair
 repair.title=Repair
diff --git a/src/main/resources/messages_es_ES.properties b/src/main/resources/messages_es_ES.properties
index e02031243..2e0cbc5a3 100644
--- a/src/main/resources/messages_es_ES.properties
+++ b/src/main/resources/messages_es_ES.properties
@@ -860,7 +860,8 @@ sign.last=Última página
 sign.next=Siguiente página
 sign.previous=Página anterior
 sign.maintainRatio=Activar/desactivar la relación de aspecto
-
+sign.undo=Undo
+sign.redo=Redo
 
 #repair
 repair.title=Reparar
diff --git a/src/main/resources/messages_eu_ES.properties b/src/main/resources/messages_eu_ES.properties
index 00647f829..e468adec6 100644
--- a/src/main/resources/messages_eu_ES.properties
+++ b/src/main/resources/messages_eu_ES.properties
@@ -860,7 +860,8 @@ sign.last=Last page
 sign.next=Next page
 sign.previous=Previous page
 sign.maintainRatio=Toggle maintain aspect ratio
-
+sign.undo=Undo
+sign.redo=Redo
 
 #repair
 repair.title=Konpondu
diff --git a/src/main/resources/messages_fa_IR.properties b/src/main/resources/messages_fa_IR.properties
index 035d9f0dd..bb8af5449 100644
--- a/src/main/resources/messages_fa_IR.properties
+++ b/src/main/resources/messages_fa_IR.properties
@@ -860,7 +860,8 @@ sign.last=صفحه آخر
 sign.next=صفحه بعدی
 sign.previous=صفحه قبلی
 sign.maintainRatio=Toggle maintain aspect ratio
-
+sign.undo=Undo
+sign.redo=Redo
 
 #repair
 repair.title=تعمیر
diff --git a/src/main/resources/messages_fr_FR.properties b/src/main/resources/messages_fr_FR.properties
index 268598181..ac6a78b27 100644
--- a/src/main/resources/messages_fr_FR.properties
+++ b/src/main/resources/messages_fr_FR.properties
@@ -860,7 +860,8 @@ sign.last=Dernière page
 sign.next=Page suivante
 sign.previous=Page précédente
 sign.maintainRatio=Conserver les proportions
-
+sign.undo=Undo
+sign.redo=Redo
 
 #repair
 repair.title=Réparer
diff --git a/src/main/resources/messages_ga_IE.properties b/src/main/resources/messages_ga_IE.properties
index aef7de862..dc0346cdb 100644
--- a/src/main/resources/messages_ga_IE.properties
+++ b/src/main/resources/messages_ga_IE.properties
@@ -860,7 +860,8 @@ sign.last=An leathanach deiridh
 sign.next=An chéad leathanach eile
 sign.previous=Leathanach roimhe seo
 sign.maintainRatio=Scoránaigh, coinnigh an cóimheas gné
-
+sign.undo=Undo
+sign.redo=Redo
 
 #repair
 repair.title=Deisiúchán
diff --git a/src/main/resources/messages_hi_IN.properties b/src/main/resources/messages_hi_IN.properties
index 5baa3a2c3..b9d2b7ccd 100644
--- a/src/main/resources/messages_hi_IN.properties
+++ b/src/main/resources/messages_hi_IN.properties
@@ -860,7 +860,8 @@ sign.last=अंतिम पृष्ठ
 sign.next=अगला पृष्ठ
 sign.previous=पिछला पृष्ठ
 sign.maintainRatio=आनुपातिक अनुपात बनाए रखें टॉगल करें
-
+sign.undo=Undo
+sign.redo=Redo
 
 #repair
 repair.title=मरम्मत
diff --git a/src/main/resources/messages_hr_HR.properties b/src/main/resources/messages_hr_HR.properties
index 5751fc9bb..49b9da7bf 100644
--- a/src/main/resources/messages_hr_HR.properties
+++ b/src/main/resources/messages_hr_HR.properties
@@ -860,7 +860,8 @@ sign.last=Last page
 sign.next=Next page
 sign.previous=Previous page
 sign.maintainRatio=Toggle maintain aspect ratio
-
+sign.undo=Undo
+sign.redo=Redo
 
 #repair
 repair.title=Popravi
diff --git a/src/main/resources/messages_hu_HU.properties b/src/main/resources/messages_hu_HU.properties
index ea365b0c8..a64e15ec0 100644
--- a/src/main/resources/messages_hu_HU.properties
+++ b/src/main/resources/messages_hu_HU.properties
@@ -860,7 +860,8 @@ sign.last=Utolsó oldal
 sign.next=Következő oldal
 sign.previous=Előző oldal
 sign.maintainRatio=Képarány fenntartása váltása
-
+sign.undo=Undo
+sign.redo=Redo
 
 #repair
 repair.title=Javítás
diff --git a/src/main/resources/messages_id_ID.properties b/src/main/resources/messages_id_ID.properties
index 1348fb955..2c6e65b36 100644
--- a/src/main/resources/messages_id_ID.properties
+++ b/src/main/resources/messages_id_ID.properties
@@ -860,7 +860,8 @@ sign.last=Last page
 sign.next=Next page
 sign.previous=Previous page
 sign.maintainRatio=Toggle maintain aspect ratio
-
+sign.undo=Undo
+sign.redo=Redo
 
 #repair
 repair.title=Perbaiki
diff --git a/src/main/resources/messages_it_IT.properties b/src/main/resources/messages_it_IT.properties
index a97228139..400b1137f 100644
--- a/src/main/resources/messages_it_IT.properties
+++ b/src/main/resources/messages_it_IT.properties
@@ -860,7 +860,8 @@ sign.last=Ultima pagina
 sign.next=Prossima pagina
 sign.previous=Pagina precedente
 sign.maintainRatio=Attiva il mantenimento delle proporzioni
-
+sign.undo=Undo
+sign.redo=Redo
 
 #repair
 repair.title=Ripara
diff --git a/src/main/resources/messages_ja_JP.properties b/src/main/resources/messages_ja_JP.properties
index d0b66ea60..79ad40c19 100644
--- a/src/main/resources/messages_ja_JP.properties
+++ b/src/main/resources/messages_ja_JP.properties
@@ -860,7 +860,8 @@ sign.last=最後のページ
 sign.next=次のページ
 sign.previous=前のページ
 sign.maintainRatio=アスペクト比を維持を切替え
-
+sign.undo=Undo
+sign.redo=Redo
 
 #repair
 repair.title=修復
diff --git a/src/main/resources/messages_ko_KR.properties b/src/main/resources/messages_ko_KR.properties
index 0b4368e96..00e8da564 100644
--- a/src/main/resources/messages_ko_KR.properties
+++ b/src/main/resources/messages_ko_KR.properties
@@ -860,7 +860,8 @@ sign.last=마지막 페이지
 sign.next=다음 페이지
 sign.previous=이전 페이지
 sign.maintainRatio=종횡비 유지 토글
-
+sign.undo=Undo
+sign.redo=Redo
 
 #repair
 repair.title=복구
diff --git a/src/main/resources/messages_nl_NL.properties b/src/main/resources/messages_nl_NL.properties
index 47428ac9c..21514896b 100644
--- a/src/main/resources/messages_nl_NL.properties
+++ b/src/main/resources/messages_nl_NL.properties
@@ -860,7 +860,8 @@ sign.last=Last page
 sign.next=Next page
 sign.previous=Previous page
 sign.maintainRatio=Toggle maintain aspect ratio
-
+sign.undo=Undo
+sign.redo=Redo
 
 #repair
 repair.title=Repareren
diff --git a/src/main/resources/messages_no_NB.properties b/src/main/resources/messages_no_NB.properties
index d33daaa47..b2a22a183 100644
--- a/src/main/resources/messages_no_NB.properties
+++ b/src/main/resources/messages_no_NB.properties
@@ -860,7 +860,8 @@ sign.last=Last page
 sign.next=Next page
 sign.previous=Previous page
 sign.maintainRatio=Toggle maintain aspect ratio
-
+sign.undo=Undo
+sign.redo=Redo
 
 #repair
 repair.title=Reparer
diff --git a/src/main/resources/messages_pl_PL.properties b/src/main/resources/messages_pl_PL.properties
index 7fec27796..506bec173 100644
--- a/src/main/resources/messages_pl_PL.properties
+++ b/src/main/resources/messages_pl_PL.properties
@@ -860,7 +860,8 @@ sign.last=Last page
 sign.next=Next page
 sign.previous=Previous page
 sign.maintainRatio=Toggle maintain aspect ratio
-
+sign.undo=Undo
+sign.redo=Redo
 
 #repair
 repair.title=Napraw
diff --git a/src/main/resources/messages_pt_BR.properties b/src/main/resources/messages_pt_BR.properties
index 06bc23128..f66dc54a1 100644
--- a/src/main/resources/messages_pt_BR.properties
+++ b/src/main/resources/messages_pt_BR.properties
@@ -860,7 +860,8 @@ sign.last=Última página
 sign.next=Próxima página
 sign.previous=Página anterior
 sign.maintainRatio=Habilitar manter proporção
-
+sign.undo=Undo
+sign.redo=Redo
 
 #repair
 repair.title=Reparar
diff --git a/src/main/resources/messages_pt_PT.properties b/src/main/resources/messages_pt_PT.properties
index 1f75a6e89..f83f36f65 100644
--- a/src/main/resources/messages_pt_PT.properties
+++ b/src/main/resources/messages_pt_PT.properties
@@ -860,7 +860,8 @@ sign.last=Última página
 sign.next=Próxima página
 sign.previous=Página anterior
 sign.maintainRatio=Alternar manter proporção
-
+sign.undo=Undo
+sign.redo=Redo
 
 #repair
 repair.title=Reparar
diff --git a/src/main/resources/messages_ro_RO.properties b/src/main/resources/messages_ro_RO.properties
index 70ae27897..0685c95ac 100644
--- a/src/main/resources/messages_ro_RO.properties
+++ b/src/main/resources/messages_ro_RO.properties
@@ -860,7 +860,8 @@ sign.last=Last page
 sign.next=Next page
 sign.previous=Previous page
 sign.maintainRatio=Toggle maintain aspect ratio
-
+sign.undo=Undo
+sign.redo=Redo
 
 #repair
 repair.title=Repară
diff --git a/src/main/resources/messages_ru_RU.properties b/src/main/resources/messages_ru_RU.properties
index fcb4413d5..1a9460bfc 100644
--- a/src/main/resources/messages_ru_RU.properties
+++ b/src/main/resources/messages_ru_RU.properties
@@ -860,7 +860,8 @@ sign.last=Последняя страница
 sign.next=Следующая страница
 sign.previous=Предыдущая страница
 sign.maintainRatio=Переключить сохранение пропорций
-
+sign.undo=Undo
+sign.redo=Redo
 
 #repair
 repair.title=Восстановление
diff --git a/src/main/resources/messages_sk_SK.properties b/src/main/resources/messages_sk_SK.properties
index d7ea322ac..8e6dc085c 100644
--- a/src/main/resources/messages_sk_SK.properties
+++ b/src/main/resources/messages_sk_SK.properties
@@ -860,7 +860,8 @@ sign.last=Last page
 sign.next=Next page
 sign.previous=Previous page
 sign.maintainRatio=Toggle maintain aspect ratio
-
+sign.undo=Undo
+sign.redo=Redo
 
 #repair
 repair.title=Opraviť
diff --git a/src/main/resources/messages_sl_SI.properties b/src/main/resources/messages_sl_SI.properties
index 870066c9c..b30b6db76 100644
--- a/src/main/resources/messages_sl_SI.properties
+++ b/src/main/resources/messages_sl_SI.properties
@@ -860,7 +860,8 @@ sign.last=Zadnja stran
 sign.next=Naslednja stran
 sign.previous=Prejšnja stran
 sign.maintainRatio=Preklopi ohranjanje razmerja stranic
-
+sign.undo=Undo
+sign.redo=Redo
 
 #repair
 repair.title=Popravilo
diff --git a/src/main/resources/messages_sr_LATN_RS.properties b/src/main/resources/messages_sr_LATN_RS.properties
index e2db8ef6d..0a0cdfbb6 100644
--- a/src/main/resources/messages_sr_LATN_RS.properties
+++ b/src/main/resources/messages_sr_LATN_RS.properties
@@ -860,7 +860,8 @@ sign.last=Last page
 sign.next=Next page
 sign.previous=Previous page
 sign.maintainRatio=Toggle maintain aspect ratio
-
+sign.undo=Undo
+sign.redo=Redo
 
 #repair
 repair.title=Popravi
diff --git a/src/main/resources/messages_sv_SE.properties b/src/main/resources/messages_sv_SE.properties
index 21d19c2e1..6a5d6d715 100644
--- a/src/main/resources/messages_sv_SE.properties
+++ b/src/main/resources/messages_sv_SE.properties
@@ -860,7 +860,8 @@ sign.last=Sista sidan
 sign.next=Nästa sida
 sign.previous=Föregående sida
 sign.maintainRatio=Toggle maintain aspect ratio
-
+sign.undo=Undo
+sign.redo=Redo
 
 #repair
 repair.title=Reparera
diff --git a/src/main/resources/messages_th_TH.properties b/src/main/resources/messages_th_TH.properties
index 0c4d4ff71..372f3c38e 100644
--- a/src/main/resources/messages_th_TH.properties
+++ b/src/main/resources/messages_th_TH.properties
@@ -860,7 +860,8 @@ sign.last=Last page
 sign.next=Next page
 sign.previous=Previous page
 sign.maintainRatio=Toggle maintain aspect ratio
-
+sign.undo=Undo
+sign.redo=Redo
 
 #repair
 repair.title=ซ่อมแซม
diff --git a/src/main/resources/messages_tr_TR.properties b/src/main/resources/messages_tr_TR.properties
index bee1c693a..adb9644df 100644
--- a/src/main/resources/messages_tr_TR.properties
+++ b/src/main/resources/messages_tr_TR.properties
@@ -860,7 +860,8 @@ sign.last=Last page
 sign.next=Next page
 sign.previous=Previous page
 sign.maintainRatio=Toggle maintain aspect ratio
-
+sign.undo=Undo
+sign.redo=Redo
 
 #repair
 repair.title=Onar
diff --git a/src/main/resources/messages_uk_UA.properties b/src/main/resources/messages_uk_UA.properties
index f17f8a774..dcec7158a 100644
--- a/src/main/resources/messages_uk_UA.properties
+++ b/src/main/resources/messages_uk_UA.properties
@@ -860,7 +860,8 @@ sign.last=Остання сторінка
 sign.next=Наступна сторінка
 sign.previous=Попередня сторінка
 sign.maintainRatio=Переключити збереження пропорцій
-
+sign.undo=Undo
+sign.redo=Redo
 
 #repair
 repair.title=Ремонт
diff --git a/src/main/resources/messages_vi_VN.properties b/src/main/resources/messages_vi_VN.properties
index 41daea0e3..8695969c6 100644
--- a/src/main/resources/messages_vi_VN.properties
+++ b/src/main/resources/messages_vi_VN.properties
@@ -860,7 +860,8 @@ sign.last=Last page
 sign.next=Next page
 sign.previous=Previous page
 sign.maintainRatio=Toggle maintain aspect ratio
-
+sign.undo=Undo
+sign.redo=Redo
 
 #repair
 repair.title=Sửa chữa
diff --git a/src/main/resources/messages_zh_BO.properties b/src/main/resources/messages_zh_BO.properties
index 41dc4335d..8e768c306 100644
--- a/src/main/resources/messages_zh_BO.properties
+++ b/src/main/resources/messages_zh_BO.properties
@@ -860,7 +860,8 @@ sign.last=ཤོག་ངོས་མཐའ་མ།
 sign.next=ཤོག་ངོས་རྗེས་མ།
 sign.previous=ཤོག་ངོས་སྔོན་མ།
 sign.maintainRatio=བསྡུར་ཚད་རྒྱུན་འཁྱོངས་སྒོ་རྒྱག་པ།
-
+sign.undo=Undo
+sign.redo=Redo
 
 #repair
 repair.title=བཟོ་བཅོས།
diff --git a/src/main/resources/messages_zh_CN.properties b/src/main/resources/messages_zh_CN.properties
index 77c839f65..af60eabc9 100644
--- a/src/main/resources/messages_zh_CN.properties
+++ b/src/main/resources/messages_zh_CN.properties
@@ -860,7 +860,8 @@ sign.last=末页
 sign.next=下一页
 sign.previous=上一页
 sign.maintainRatio=切换保持长宽比
-
+sign.undo=撤销
+sign.redo=重做
 
 #repair
 repair.title=修复
diff --git a/src/main/resources/messages_zh_TW.properties b/src/main/resources/messages_zh_TW.properties
index e6485e7bc..6a4bd2ee2 100644
--- a/src/main/resources/messages_zh_TW.properties
+++ b/src/main/resources/messages_zh_TW.properties
@@ -860,7 +860,8 @@ sign.last=最後一頁
 sign.next=下一頁
 sign.previous=上一頁
 sign.maintainRatio=切換維持長寬比
-
+sign.undo=撤销
+sign.redo=重做
 
 #repair
 repair.title=修復
diff --git a/src/main/resources/static/js/sign/signature-canvas.js b/src/main/resources/static/js/sign/signature-canvas.js
index 03052d9ce..bd06e8456 100644
--- a/src/main/resources/static/js/sign/signature-canvas.js
+++ b/src/main/resources/static/js/sign/signature-canvas.js
@@ -1,10 +1,48 @@
 const signaturePadCanvas = document.getElementById('drawing-pad-canvas');
+const undoButton = document.getElementById("signature-undo-button");
+const redoButton = document.getElementById("signature-redo-button");
 const signaturePad = new SignaturePad(signaturePadCanvas, {
   minWidth: 1,
   maxWidth: 2,
   penColor: 'black',
 });
 
+let undoData = [];
+
+signaturePad.addEventListener("endStroke", () => {
+  undoData = [];
+});
+
+window.addEventListener("keydown", (event) => {
+  switch (true) {
+    case event.key === "z" && event.ctrlKey:
+      undoButton.click();
+      break;
+    case event.key === "y" && event.ctrlKey:
+      redoButton.click();
+      break;
+  }
+});
+
+function undoDraw() {
+  const data = signaturePad.toData();
+
+  if (data && data.length > 0) {
+    const removed = data.pop();
+    undoData.push(removed);
+    signaturePad.fromData(data);
+  }
+}
+
+function redoDraw() {
+
+  if (undoData.length > 0) {
+    const data = signaturePad.toData();
+    data.push(undoData.pop());
+    signaturePad.fromData(data);
+  }
+}
+
 function addDraggableFromPad() {
   if (signaturePad.isEmpty()) return;
   const startTime = Date.now();
diff --git a/src/main/resources/templates/sign.html b/src/main/resources/templates/sign.html
index 605737457..b0c66c27e 100644
--- a/src/main/resources/templates/sign.html
+++ b/src/main/resources/templates/sign.html
@@ -56,6 +56,10 @@
                   th:text="#{sign.clear}"></button>
                 <button id="save-signature" class="btn btn-outline-success mt-2" onclick="addDraggableFromPad()"
                   th:text="#{sign.add}"></button>
+                  <button id="signature-undo-button" class="btn btn-outline-secondary mt-2" th:text="#{sign.undo}"
+                  onclick="undoDraw()"></button>
+                <button id="signature-redo-button" class="btn btn-outline-secondary mt-2" th:text="#{sign.redo}"
+                  onclick="redoDraw()"></button>
               </div>
 
               <div class="tab-container" th:title="#{sign.saved}" th:data-title="#{sign.saved}">