Merge pull request #1346 from Ludy87/remove_cert_sign

add remove digital signature

Endpoint-groups.md

@@ -1,5 +1,5 @@
 | Operation           | PageOps | Convert | Security | Other | CLI | Python | OpenCV | LibreOffice | OCRmyPDF | Java | Javascript |
-|---------------------|---------|---------|----------|-------|------|--------|--------|-------------|----------|----------|------------|
+| ------------------- | ------- | ------- | -------- | ----- | --- | ------ | ------ | ----------- | -------- | ---- | ---------- |
 | adjust-contrast     | ✔️       |         |          |       |     |        |        |             |          |      | ✔️          |
 | auto-split-pdf      | ✔️       |         |          |       |     |        |        |             |          | ✔️    |            |
 | crop                | ✔️       |         |          |       |     |        |        |             |          | ✔️    |            |
@@ -26,6 +26,7 @@
 | add-password        |         |         | ✔️        |       |     |        |        |             |          | ✔️    |            |
 | add-watermark       |         |         | ✔️        |       |     |        |        |             |          | ✔️    |            |
 | cert-sign           |         |         | ✔️        |       |     |        |        |             |          | ✔️    |            |
+| remove-cert-sign    |         |         | ✔️        |       |     |        |        |             |          | ✔️    |            |
 | change-permissions  |         |         | ✔️        |       |     |        |        |             |          | ✔️    |            |
 | remove-password     |         |         | ✔️        |       |     |        |        |             |          | ✔️    |            |
 | sanitize-pdf        |         |         | ✔️        |       |     |        |        |             |          | ✔️    |            |

Version-groups.md

@@ -1,5 +1,5 @@
 | Technology | Ultra-Lite | Full  |
-|----------------|:----------:|:----:|
+| ---------- | :--------: | :---: |
 | Java       |     ✔️      |   ✔️   |
 | JavaScript |     ✔️      |   ✔️   |
 | Libre      |            |   ✔️   |
@@ -7,46 +7,47 @@
 | OpenCV     |            |   ✔️   |
 | OCRmyPDF   |            |   ✔️   |
 
-Operation                | Ultra-Lite | Full
+| Operation              | Ultra-Lite | Full |
--------------------------|------------|-----
+| ---------------------- | ---------- | ---- |
-add-page-numbers         |     ✔️      |  ✔️
+| add-page-numbers       | ✔️          | ✔️    |
-add-password             |     ✔️      |  ✔️
+| add-password           | ✔️          | ✔️    |
-add-image                |     ✔️      |  ✔️
+| add-image              | ✔️          | ✔️    |
-add-watermark            |     ✔️      |  ✔️
+| add-watermark          | ✔️          | ✔️    |
-adjust-contrast          |     ✔️      |  ✔️
+| adjust-contrast        | ✔️          | ✔️    |
-auto-split-pdf           |     ✔️      |  ✔️
+| auto-split-pdf         | ✔️          | ✔️    |
-auto-redact              |     ✔️      |  ✔️
+| auto-redact            | ✔️          | ✔️    |
-auto-rename              |     ✔️      |  ✔️
+| auto-rename            | ✔️          | ✔️    |
-cert-sign                |     ✔️      |  ✔️
+| cert-sign              | ✔️          | ✔️    |
-crop                     |     ✔️      |  ✔️
+| remove-cert-sign       | ✔️          | ✔️    |
-change-metadata          |     ✔️      |  ✔️
+| crop                   | ✔️          | ✔️    |
-change-permissions       |     ✔️      |  ✔️
+| change-metadata        | ✔️          | ✔️    |
-compare                  |     ✔️      |  ✔️
+| change-permissions     | ✔️          | ✔️    |
-extract-page             |     ✔️      |  ✔️
+| compare                | ✔️          | ✔️    |
-extract-images           |     ✔️      |  ✔️
+| extract-page           | ✔️          | ✔️    |
-flatten                  |     ✔️      |  ✔️
+| extract-images         | ✔️          | ✔️    |
-get-info-on-pdf          |     ✔️      |  ✔️
+| flatten                | ✔️          | ✔️    |
-img-to-pdf               |     ✔️      |  ✔️
+| get-info-on-pdf        | ✔️          | ✔️    |
-markdown-to-pdf          |     ✔️      |  ✔️
+| img-to-pdf             | ✔️          | ✔️    |
-merge-pdfs               |     ✔️      |  ✔️
+| markdown-to-pdf        | ✔️          | ✔️    |
-multi-page-layout        |     ✔️      |  ✔️
+| merge-pdfs             | ✔️          | ✔️    |
-overlay-pdf              |     ✔️      |  ✔️
+| multi-page-layout      | ✔️          | ✔️    |
-pdf-organizer            |     ✔️      |  ✔️
+| overlay-pdf            | ✔️          | ✔️    |
-pdf-to-csv               |     ✔️      |  ✔️
+| pdf-organizer          | ✔️          | ✔️    |
-pdf-to-img               |     ✔️      |  ✔️
+| pdf-to-csv             | ✔️          | ✔️    |
-pdf-to-single-page       |     ✔️      |  ✔️
+| pdf-to-img             | ✔️          | ✔️    |
-remove-pages             |     ✔️      |  ✔️
+| pdf-to-single-page     | ✔️          | ✔️    |
-remove-password          |     ✔️      |  ✔️
+| remove-pages           | ✔️          | ✔️    |
-rotate-pdf               |     ✔️      |  ✔️
+| remove-password        | ✔️          | ✔️    |
-sanitize-pdf             |     ✔️      |  ✔️
+| rotate-pdf             | ✔️          | ✔️    |
-scale-pages              |     ✔️      |  ✔️
+| sanitize-pdf           | ✔️          | ✔️    |
-sign                     |     ✔️      |  ✔️
+| scale-pages            | ✔️          | ✔️    |
-show-javascript          |     ✔️      |  ✔️
+| sign                   | ✔️          | ✔️    |
-split-by-size-or-count   |     ✔️      |  ✔️
+| show-javascript        | ✔️          | ✔️    |
-split-pdf-by-sections    |     ✔️      |  ✔️
+| split-by-size-or-count | ✔️          | ✔️    |
-split-pdfs               |     ✔️      |  ✔️
+| split-pdf-by-sections  | ✔️          | ✔️    |
-compress-pdf             |            |  ✔️
+| split-pdfs             | ✔️          | ✔️    |
-extract-image-scans      |            |  ✔️
+| compress-pdf           |            | ✔️    |
-ocr-pdf                  |            |  ✔️
+| extract-image-scans    |            | ✔️    |
-pdf-to-pdfa              |            |  ✔️
+| ocr-pdf                |            | ✔️    |
-remove-blanks            |            |  ✔️
+| pdf-to-pdfa            |            | ✔️    |
+| remove-blanks          |            | ✔️    |

src/main/java/stirling/software/SPDF/config/EndpointConfiguration.java

@@ -116,6 +116,7 @@ public class EndpointConfiguration {
         addEndpointToGroup("Security", "change-permissions");
         addEndpointToGroup("Security", "add-watermark");
         addEndpointToGroup("Security", "cert-sign");
+        addEndpointToGroup("Security", "remove-cert-sign");
         addEndpointToGroup("Security", "sanitize-pdf");
         addEndpointToGroup("Security", "auto-redact");
 
@@ -200,6 +201,7 @@ public class EndpointConfiguration {
         addEndpointToGroup("Java", "extract-images");
         addEndpointToGroup("Java", "change-metadata");
         addEndpointToGroup("Java", "cert-sign");
+        addEndpointToGroup("Java", "remove-cert-sign");
         addEndpointToGroup("Java", "multi-page-layout");
         addEndpointToGroup("Java", "scale-pages");
         addEndpointToGroup("Java", "add-page-numbers");

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

@@ -0,0 +1,71 @@
+package stirling.software.SPDF.controller.api.security;
+
+import java.io.ByteArrayOutputStream;
+
+import org.apache.pdfbox.Loader;
+import org.apache.pdfbox.pdmodel.PDDocument;
+import org.apache.pdfbox.pdmodel.PDDocumentCatalog;
+import org.apache.pdfbox.pdmodel.interactive.form.PDAcroForm;
+import org.apache.pdfbox.pdmodel.interactive.form.PDSignatureField;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.ModelAttribute;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+import org.springframework.web.multipart.MultipartFile;
+
+import io.github.pixee.security.Filenames;
+import io.swagger.v3.oas.annotations.Operation;
+import io.swagger.v3.oas.annotations.tags.Tag;
+
+import stirling.software.SPDF.model.api.PDFFile;
+import stirling.software.SPDF.utils.WebResponseUtils;
+
+@RestController
+@RequestMapping("/api/v1/security")
+@Tag(name = "Security", description = "Security APIs")
+public class RemoveCertSignController {
+
+    private static final Logger logger = LoggerFactory.getLogger(RemoveCertSignController.class);
+
+    @PostMapping(consumes = "multipart/form-data", value = "/remove-cert-sign")
+    @Operation(
+            summary = "Remove digital signature from PDF",
+            description =
+                    "This endpoint accepts a PDF file and returns the PDF file without the digital signature. Input: PDF, Output: PDF")
+    public ResponseEntity<byte[]> removeCertSignPDF(@ModelAttribute PDFFile request)
+            throws Exception {
+        MultipartFile pdf = request.getFileInput();
+
+        // Convert MultipartFile to byte[]
+        byte[] pdfBytes = pdf.getBytes();
+
+        // Create a ByteArrayOutputStream to hold the resulting PDF
+        ByteArrayOutputStream baos = new ByteArrayOutputStream();
+
+        // Load the PDF document
+        PDDocument document = Loader.loadPDF(pdfBytes);
+
+        // Get the document catalog
+        PDDocumentCatalog catalog = document.getDocumentCatalog();
+
+        // Get the AcroForm
+        PDAcroForm acroForm = catalog.getAcroForm();
+        if (acroForm != null) {
+            // Remove signature fields
+            acroForm.getFields().removeIf(field -> field instanceof PDSignatureField);
+        }
+
+        // Save the modified document to the ByteArrayOutputStream
+        document.save(baos);
+        document.close();
+
+        // Return the modified PDF as a response
+        return WebResponseUtils.boasToWebResponse(
+                baos,
+                Filenames.toSimpleFileName(pdf.getOriginalFilename()).replaceFirst("[.][^.]+$", "")
+                        + "_unsigned.pdf");
+    }
+}

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

@@ -53,6 +53,13 @@ public class SecurityWebController {
         return "security/cert-sign";
     }
 
+    @GetMapping("/remove-cert-sign")
+    @Hidden
+    public String certUnSignForm(Model model) {
+        model.addAttribute("currentPage", "remove-cert-sign");
+        return "security/remove-cert-sign";
+    }
+
     @GetMapping("/sanitize-pdf")
     @Hidden
     public String sanitizeForm(Model model) {

src/main/resources/messages_ar_AR.properties

@@ -332,6 +332,10 @@ home.certSign.title=Sign with Certificate
 home.certSign.desc=Signs a PDF with a Certificate/Key (PEM/P12)
 certSign.tags=authenticate,PEM,P12,official,encrypt
 
+home.removeCertSign.title=Remove Certificate Sign
+home.removeCertSign.desc=Remove certificate signature from PDF
+removeCertSign.tags=authenticate,PEM,P12,official,decrypt
+
 home.pageLayout.title=Multi-Page Layout
 home.pageLayout.desc=Merge multiple pages of a PDF document into a single page
 pageLayout.tags=merge,composite,single-view,organize
@@ -655,6 +659,13 @@ certSign.name=الاسم
 certSign.submit=تسجيل PDF
 
 
+#removeCertSign
+removeCertSign.title=Remove Certificate Signature
+removeCertSign.header=Remove the digital certificate from the PDF
+removeCertSign.selectPDF=Select a PDF file:
+removeCertSign.submit=Remove Signature
+
+
 #removeBlanks
 removeBlanks.title=إزالة الفراغات
 removeBlanks.header=إزالة الصفحات الفارغة

src/main/resources/messages_bg_BG.properties

@@ -332,6 +332,10 @@ home.certSign.title=Подпишете със сертификат
 home.certSign.desc=Подписва PDF със сертификат/ключ (PEM/P12)
 certSign.tags=удостоверяване,PEM,P12,официален,шифроване
 
+home.removeCertSign.title=Remove Certificate Sign
+home.removeCertSign.desc=Remove certificate signature from PDF
+removeCertSign.tags=authenticate,PEM,P12,official,decrypt
+
 home.pageLayout.title=Оформление с няколко страници
 home.pageLayout.desc=Слейте няколко страници от PDF документ в една страница
 pageLayout.tags=сливане,комбиниран,единичен изглед,организиране
@@ -655,6 +659,13 @@ certSign.name=Име
 certSign.submit=Подпишете PDF
 
 
+#removeCertSign
+removeCertSign.title=Remove Certificate Signature
+removeCertSign.header=Remove the digital certificate from the PDF
+removeCertSign.selectPDF=Select a PDF file:
+removeCertSign.submit=Remove Signature
+
+
 #removeBlanks
 removeBlanks.title=Премахване на празни места
 removeBlanks.header=Премахване на празни страници

src/main/resources/messages_ca_CA.properties

@@ -332,6 +332,10 @@ home.certSign.title=Signa amb Certificat
 home.certSign.desc=Sign PDF amb Certificate/Clau (PEM/P12)
 certSign.tags=authentica,PEM,P12,official,encripta
 
+home.removeCertSign.title=Remove Certificate Sign
+home.removeCertSign.desc=Remove certificate signature from PDF
+removeCertSign.tags=authenticate,PEM,P12,official,decrypt
+
 home.pageLayout.title=Multi-Page Layout
 home.pageLayout.desc=Merge multiple pages of a PDF document into a single page
 pageLayout.tags=merge,composite,single-view,organize
@@ -655,6 +659,13 @@ certSign.name=Nom
 certSign.submit=Firma PDF
 
 
+#removeCertSign
+removeCertSign.title=Remove Certificate Signature
+removeCertSign.header=Remove the digital certificate from the PDF
+removeCertSign.selectPDF=Select a PDF file:
+removeCertSign.submit=Remove Signature
+
+
 #removeBlanks
 removeBlanks.title=Elimina els espais en blanc
 removeBlanks.header=Elimina les pàgines en blanc

src/main/resources/messages_cs_CZ.properties

@@ -332,6 +332,10 @@ home.certSign.title=Podpis s certifikátem
 home.certSign.desc=Podpis PDF s certifikátem/klíčem (PEM/P12)
 certSign.tags=autentizace,PEM,P12,oficiální,šifrování
 
+home.removeCertSign.title=Remove Certificate Sign
+home.removeCertSign.desc=Remove certificate signature from PDF
+removeCertSign.tags=authenticate,PEM,P12,official,decrypt
+
 home.pageLayout.title=Vícestránkové rozložení
 home.pageLayout.desc=Sloučení více stránek dokumentu PDF do jedné stránky
 pageLayout.tags=sloučit,kompozitní,jedno zobrazení,organizovat
@@ -655,6 +659,13 @@ certSign.name=Název
 certSign.submit=Podepsat PDF
 
 
+#removeCertSign
+removeCertSign.title=Remove Certificate Signature
+removeCertSign.header=Remove the digital certificate from the PDF
+removeCertSign.selectPDF=Select a PDF file:
+removeCertSign.submit=Remove Signature
+
+
 #removeBlanks
 removeBlanks.title=Odebrat prázdné stránky
 removeBlanks.header=Odebrat prázdné stránky

src/main/resources/messages_de_DE.properties

@@ -332,6 +332,10 @@ home.certSign.title=Mit Zertifikat signieren
 home.certSign.desc=Ein PDF mit einem Zertifikat/Schlüssel (PEM/P12) signieren
 certSign.tags=authentifizieren,pem,p12,offiziell,verschlüsseln
 
+home.removeCertSign.title=Remove Certificate Sign
+home.removeCertSign.desc=Remove certificate signature from PDF
+removeCertSign.tags=authenticate,PEM,P12,official,decrypt
+
 home.pageLayout.title=Mehrseitiges Layout
 home.pageLayout.desc=Mehrere Seiten eines PDF zu einer Seite zusammenführen
 pageLayout.tags=zusammenführen,zusammensetzen,einzelansicht,organisieren
@@ -655,6 +659,13 @@ certSign.name=Name
 certSign.submit=PDF signieren
 
 
+#removeCertSign
+removeCertSign.title=Remove Certificate Signature
+removeCertSign.header=Remove the digital certificate from the PDF
+removeCertSign.selectPDF=Select a PDF file:
+removeCertSign.submit=Remove Signature
+
+
 #removeBlanks
 removeBlanks.title=Leere Seiten entfernen
 removeBlanks.header=Leere Seiten entfernen

src/main/resources/messages_el_GR.properties

@@ -332,6 +332,10 @@ home.certSign.title=Υπογραφή με Πιστοποιητικό
 home.certSign.desc=Υπογραφή ενός PDF αρχείου με ένα Πιστοποιητικό/Κλειδί (PEM/P12)
 certSign.tags=authenticate,PEM,P12,official,encrypt
 
+home.removeCertSign.title=Remove Certificate Sign
+home.removeCertSign.desc=Remove certificate signature from PDF
+removeCertSign.tags=authenticate,PEM,P12,official,decrypt
+
 home.pageLayout.title=Διάταξη πολλών σελίδων
 home.pageLayout.desc=Συγχώνευση πολλαπλών σελίδων ενός εγγράφου PDF σε μία μόνο σελίδα
 pageLayout.tags=merge,composite,single-view,organize
@@ -655,6 +659,13 @@ certSign.name=Όνομα
 certSign.submit=Υπογραφή PDF
 
 
+#removeCertSign
+removeCertSign.title=Remove Certificate Signature
+removeCertSign.header=Remove the digital certificate from the PDF
+removeCertSign.selectPDF=Select a PDF file:
+removeCertSign.submit=Remove Signature
+
+
 #removeBlanks
 removeBlanks.title=Αφαίρεση Κενών
 removeBlanks.header=Αφαίρεση Κενών Σελίδων

src/main/resources/messages_en_GB.properties

@@ -332,6 +332,10 @@ home.certSign.title=Sign with Certificate
 home.certSign.desc=Signs a PDF with a Certificate/Key (PEM/P12)
 certSign.tags=authenticate,PEM,P12,official,encrypt
 
+home.removeCertSign.title=Remove Certificate Sign
+home.removeCertSign.desc=Remove certificate signature from PDF
+removeCertSign.tags=authenticate,PEM,P12,official,decrypt
+
 home.pageLayout.title=Multi-Page Layout
 home.pageLayout.desc=Merge multiple pages of a PDF document into a single page
 pageLayout.tags=merge,composite,single-view,organize
@@ -655,6 +659,13 @@ certSign.name=Name
 certSign.submit=Sign PDF
 
 
+#removeCertSign
+removeCertSign.title=Remove Certificate Signature
+removeCertSign.header=Remove the digital certificate from the PDF
+removeCertSign.selectPDF=Select a PDF file:
+removeCertSign.submit=Remove Signature
+
+
 #removeBlanks
 removeBlanks.title=Remove Blanks
 removeBlanks.header=Remove Blank Pages

src/main/resources/messages_en_US.properties

@@ -332,6 +332,10 @@ home.certSign.title=Sign with Certificate
 home.certSign.desc=Signs a PDF with a Certificate/Key (PEM/P12)
 certSign.tags=authenticate,PEM,P12,official,encrypt
 
+home.removeCertSign.title=Remove Certificate Sign
+home.removeCertSign.desc=Remove certificate signature from PDF
+removeCertSign.tags=authenticate,PEM,P12,official,decrypt
+
 home.pageLayout.title=Multi-Page Layout
 home.pageLayout.desc=Merge multiple pages of a PDF document into a single page
 pageLayout.tags=merge,composite,single-view,organize
@@ -655,6 +659,13 @@ certSign.name=Name
 certSign.submit=Sign PDF
 
 
+#removeCertSign
+removeCertSign.title=Remove Certificate Signature
+removeCertSign.header=Remove the digital certificate from the PDF
+removeCertSign.selectPDF=Select a PDF file:
+removeCertSign.submit=Remove Signature
+
+
 #removeBlanks
 removeBlanks.title=Remove Blanks
 removeBlanks.header=Remove Blank Pages

src/main/resources/messages_es_ES.properties

@@ -332,6 +332,10 @@ home.certSign.title=Firmar con certificado
 home.certSign.desc=Firmar un PDF con un Certificado/Clave (PEM/P12)
 certSign.tags=autentificar,PEM,P12,oficial,encriptar
 
+home.removeCertSign.title=Remove Certificate Sign
+home.removeCertSign.desc=Remove certificate signature from PDF
+removeCertSign.tags=authenticate,PEM,P12,official,decrypt
+
 home.pageLayout.title=Diseño de varias páginas
 home.pageLayout.desc=Unir varias páginas de un documento PDF en una sola página
 pageLayout.tags=unir,compuesto,vista única,organizar
@@ -655,6 +659,13 @@ certSign.name=Nombre
 certSign.submit=Firmar PDF
 
 
+#removeCertSign
+removeCertSign.title=Remove Certificate Signature
+removeCertSign.header=Remove the digital certificate from the PDF
+removeCertSign.selectPDF=Select a PDF file:
+removeCertSign.submit=Remove Signature
+
+
 #removeBlanks
 removeBlanks.title=Eliminar espacios en blanco
 removeBlanks.header=Eliminar páginas en blanco

src/main/resources/messages_eu_ES.properties

@@ -332,6 +332,10 @@ home.certSign.title=Sinatu ziurtagiriarekin
 home.certSign.desc=Sinatu PDF bat Ziurtagiri/Gako batekin (PEM/P12)
 certSign.tags=authenticate,PEM,P12,official,encrypt
 
+home.removeCertSign.title=Remove Certificate Sign
+home.removeCertSign.desc=Remove certificate signature from PDF
+removeCertSign.tags=authenticate,PEM,P12,official,decrypt
+
 home.pageLayout.title=Zenbait orrialderen diseinua
 home.pageLayout.desc=Elkartu orri bakar batean PDF dokumentu baten zenbait orrialde
 pageLayout.tags=merge,composite,single-view,organize
@@ -655,6 +659,13 @@ certSign.name=Izena
 certSign.submit=Sinatu PDFa
 
 
+#removeCertSign
+removeCertSign.title=Remove Certificate Signature
+removeCertSign.header=Remove the digital certificate from the PDF
+removeCertSign.selectPDF=Select a PDF file:
+removeCertSign.submit=Remove Signature
+
+
 #removeBlanks
 removeBlanks.title=Ezabatu zuriuneak
 removeBlanks.header=Ezabatu orrialde zuriak

src/main/resources/messages_fr_FR.properties

@@ -332,6 +332,10 @@ home.certSign.title=Signer avec un certificat
 home.certSign.desc=Signez un PDF avec un certificat ou une clé (PEM/P12).
 certSign.tags=signer,chiffrer,certificat,authenticate,PEM,P12,official,encrypt
 
+home.removeCertSign.title=Remove Certificate Sign
+home.removeCertSign.desc=Remove certificate signature from PDF
+removeCertSign.tags=authenticate,PEM,P12,official,decrypt
+
 home.pageLayout.title=Fusionner des pages
 home.pageLayout.desc=Fusionnez plusieurs pages d’un PDF en une seule.
 pageLayout.tags=fusionner,merge,composite,single-view,organize
@@ -655,6 +659,13 @@ certSign.name=Nom
 certSign.submit=Signer
 
 
+#removeCertSign
+removeCertSign.title=Remove Certificate Signature
+removeCertSign.header=Remove the digital certificate from the PDF
+removeCertSign.selectPDF=Select a PDF file:
+removeCertSign.submit=Remove Signature
+
+
 #removeBlanks
 removeBlanks.title=Supprimer les pages vierges
 removeBlanks.header=Supprimer les pages vierges

src/main/resources/messages_hi_IN.properties

@@ -332,6 +332,10 @@ home.certSign.title=प्रमाणपत्र के साथ हस्त
 home.certSign.desc=पीडीएफ़ को प्रमाणपत्र/कुंजी (PEM/P12) के साथ हस्ताक्षरित करता है।
 certSign.tags=प्रमाणीकरण, PEM, P12, आधिकारिक, एन्क्रिप्ट
 
+home.removeCertSign.title=Remove Certificate Sign
+home.removeCertSign.desc=Remove certificate signature from PDF
+removeCertSign.tags=authenticate,PEM,P12,official,decrypt
+
 home.pageLayout.title=मल्टी-पेज लेआउट
 home.pageLayout.desc=पीडीएफ़ दस्तावेज़ के कई पेजों को एक ही पेज में मर्ज करता है।
 pageLayout.tags=मर्ज, संयोजित, एकल दृश्य, संगठित
@@ -655,6 +659,13 @@ certSign.name=नाम
 certSign.submit=पीडीएफ़ पर हस्ताक्षर करें
 
 
+#removeCertSign
+removeCertSign.title=Remove Certificate Signature
+removeCertSign.header=Remove the digital certificate from the PDF
+removeCertSign.selectPDF=Select a PDF file:
+removeCertSign.submit=Remove Signature
+
+
 #removeBlanks
 removeBlanks.title=खाली पेज हटाएं
 removeBlanks.header=खाली पेज हटाएं

src/main/resources/messages_hu_HU.properties

@@ -332,6 +332,10 @@ home.certSign.title=Aláírás Tanúsítvánnyal
 home.certSign.desc=PDF aláírása tanúsítvánnyal/kulccsal (PEM/P12)
 certSign.tags=hitelesítés,PEM,P12,hivatalos,segitít,álca
 
+home.removeCertSign.title=Remove Certificate Sign
+home.removeCertSign.desc=Remove certificate signature from PDF
+removeCertSign.tags=authenticate,PEM,P12,official,decrypt
+
 home.pageLayout.title=Több oldal elrendezése
 home.pageLayout.desc=Több oldal egyesítése egy PDF dokumentumban egyetlen oldallá
 pageLayout.tags=egyesítés,kompozit,egy oldal,megszervez
@@ -655,6 +659,13 @@ certSign.name=Név
 certSign.submit=PDF aláírása
 
 
+#removeCertSign
+removeCertSign.title=Remove Certificate Signature
+removeCertSign.header=Remove the digital certificate from the PDF
+removeCertSign.selectPDF=Select a PDF file:
+removeCertSign.submit=Remove Signature
+
+
 #removeBlanks
 removeBlanks.title=Üres oldalak eltávolítása
 removeBlanks.header=Üres oldalak eltávolítása

src/main/resources/messages_id_ID.properties

@@ -332,6 +332,10 @@ home.certSign.title=Tanda tangani dengan Sertifikat
 home.certSign.desc=Menandatangani PDF dengan Certificate/Key (PEM/P12)
 certSign.tags=mengotentikasi, PEM, P12, resmi, mengenkripsi
 
+home.removeCertSign.title=Remove Certificate Sign
+home.removeCertSign.desc=Remove certificate signature from PDF
+removeCertSign.tags=authenticate,PEM,P12,official,decrypt
+
 home.pageLayout.title=Tata Letak Multi-Halaman
 home.pageLayout.desc=Menggabungkan beberapa halaman dokumen PDF menjadi satu halaman
 pageLayout.tags=menggabungkan, komposit, tampilan tunggal, mengatur
@@ -655,6 +659,13 @@ certSign.name=Nama
 certSign.submit=Tanda tangani PDF
 
 
+#removeCertSign
+removeCertSign.title=Remove Certificate Signature
+removeCertSign.header=Remove the digital certificate from the PDF
+removeCertSign.selectPDF=Select a PDF file:
+removeCertSign.submit=Remove Signature
+
+
 #removeBlanks
 removeBlanks.title=Hapus Halaman Kosong
 removeBlanks.header=Remove Blank Pages

src/main/resources/messages_it_IT.properties

@@ -332,6 +332,10 @@ home.certSign.title=Firma con certificato
 home.certSign.desc=Firma un PDF con un certificato/chiave (PEM/P12)
 certSign.tags=autenticare,PEM,P12,ufficiale,crittografare
 
+home.removeCertSign.title=Remove Certificate Sign
+home.removeCertSign.desc=Remove certificate signature from PDF
+removeCertSign.tags=authenticate,PEM,P12,official,decrypt
+
 home.pageLayout.title=Layout multipagina
 home.pageLayout.desc=Unisci più pagine di un documento PDF in un'unica pagina
 pageLayout.tags=unire,comporre,visualizzazione singola,organizzare
@@ -655,6 +659,13 @@ certSign.name=Nome
 certSign.submit=Firma PDF
 
 
+#removeCertSign
+removeCertSign.title=Remove Certificate Signature
+removeCertSign.header=Remove the digital certificate from the PDF
+removeCertSign.selectPDF=Select a PDF file:
+removeCertSign.submit=Remove Signature
+
+
 #removeBlanks
 removeBlanks.title=Rimuovi spazi vuoti
 removeBlanks.header=Rimuovi pagine vuote

src/main/resources/messages_ja_JP.properties

@@ -332,6 +332,10 @@ home.certSign.title=証明書による署名
 home.certSign.desc=証明書/キーを使用してPDFに署名します。 (PEM/P12)
 certSign.tags=authenticate,PEM,P12,official,encrypt
 
+home.removeCertSign.title=Remove Certificate Sign
+home.removeCertSign.desc=Remove certificate signature from PDF
+removeCertSign.tags=authenticate,PEM,P12,official,decrypt
+
 home.pageLayout.title=マルチページレイアウト
 home.pageLayout.desc=PDFの複数のページを1ページに結合します。
 pageLayout.tags=merge,composite,single-view,organize
@@ -655,6 +659,13 @@ certSign.name=名前
 certSign.submit=PDFに署名
 
 
+#removeCertSign
+removeCertSign.title=Remove Certificate Signature
+removeCertSign.header=Remove the digital certificate from the PDF
+removeCertSign.selectPDF=Select a PDF file:
+removeCertSign.submit=Remove Signature
+
+
 #removeBlanks
 removeBlanks.title=空白の削除
 removeBlanks.header=空白ページの削除

src/main/resources/messages_ko_KR.properties

@@ -332,6 +332,10 @@ home.certSign.title=인증서로 서명
 home.certSign.desc=PDF 문서에 인증서 또는 키로 서명합니다. (PEM/P12)
 certSign.tags=authenticate,PEM,P12,official,encrypt
 
+home.removeCertSign.title=Remove Certificate Sign
+home.removeCertSign.desc=Remove certificate signature from PDF
+removeCertSign.tags=authenticate,PEM,P12,official,decrypt
+
 home.pageLayout.title=다중 페이지 레이아웃
 home.pageLayout.desc=PDF 문서의 여러 페이지를 한 페이지로 합칩니다.
 pageLayout.tags=merge,composite,single-view,organize
@@ -655,6 +659,13 @@ certSign.name=이름
 certSign.submit=PDF 서명
 
 
+#removeCertSign
+removeCertSign.title=Remove Certificate Signature
+removeCertSign.header=Remove the digital certificate from the PDF
+removeCertSign.selectPDF=Select a PDF file:
+removeCertSign.submit=Remove Signature
+
+
 #removeBlanks
 removeBlanks.title=빈 페이지 제거
 removeBlanks.header=빈 페이지 제거

src/main/resources/messages_nl_NL.properties

@@ -332,6 +332,10 @@ home.certSign.title=Ondertekenen met certificaat
 home.certSign.desc=Ondertekent een PDF met een certificaat/sleutel (PEM/P12)
 certSign.tags=authenticeren,PEM,P12,officieel,versleutelen
 
+home.removeCertSign.title=Remove Certificate Sign
+home.removeCertSign.desc=Remove certificate signature from PDF
+removeCertSign.tags=authenticate,PEM,P12,official,decrypt
+
 home.pageLayout.title=Multi-pagina indeling
 home.pageLayout.desc=Voeg meerdere pagina's van een PDF-document samen op één pagina
 pageLayout.tags=samenvoegen,composiet,enkel-zicht,organiseren
@@ -655,6 +659,13 @@ certSign.name=Naam
 certSign.submit=PDF ondertekenen
 
 
+#removeCertSign
+removeCertSign.title=Remove Certificate Signature
+removeCertSign.header=Remove the digital certificate from the PDF
+removeCertSign.selectPDF=Select a PDF file:
+removeCertSign.submit=Remove Signature
+
+
 #removeBlanks
 removeBlanks.title=Verwijder blanco's
 removeBlanks.header=Verwijder lege pagina's

src/main/resources/messages_pl_PL.properties

@@ -332,6 +332,10 @@ home.certSign.title=Podpisz certyfikatem
 home.certSign.desc=Podpisz dokument PDF za pomocą certyfikatu/klucza prywatnego (PEM/P12)
 certSign.tags=authenticate,PEM,P12,official,encrypt
 
+home.removeCertSign.title=Remove Certificate Sign
+home.removeCertSign.desc=Remove certificate signature from PDF
+removeCertSign.tags=authenticate,PEM,P12,official,decrypt
+
 home.pageLayout.title=Układ wielu stron
 home.pageLayout.desc=Scal wiele stron dokumentu PDF w jedną stronę
 pageLayout.tags=merge,composite,single-view,organize
@@ -655,6 +659,13 @@ certSign.name=Nazwa
 certSign.submit=Podpisz PDF
 
 
+#removeCertSign
+removeCertSign.title=Remove Certificate Signature
+removeCertSign.header=Remove the digital certificate from the PDF
+removeCertSign.selectPDF=Select a PDF file:
+removeCertSign.submit=Remove Signature
+
+
 #removeBlanks
 removeBlanks.title=Usuń puste
 removeBlanks.header=Usuń puste strony

src/main/resources/messages_pt_BR.properties

@@ -332,6 +332,10 @@ home.certSign.title=Assinar com Certificado
 home.certSign.desc=Assinar um PDF com um Certificado/Chave (PEM/P12)
 certSign.tags=autenticar,PEM,P12,oficial,criptografar
 
+home.removeCertSign.title=Remove Certificate Sign
+home.removeCertSign.desc=Remove certificate signature from PDF
+removeCertSign.tags=authenticate,PEM,P12,official,decrypt
+
 home.pageLayout.title=Layout de Múltiplas Páginas
 home.pageLayout.desc=Mesclar várias páginas de um documento PDF em uma única página
 pageLayout.tags=mesclar,composto,vista-única,organizar
@@ -655,6 +659,13 @@ certSign.name=Nome
 certSign.submit=Assinar PDF
 
 
+#removeCertSign
+removeCertSign.title=Remove Certificate Signature
+removeCertSign.header=Remove the digital certificate from the PDF
+removeCertSign.selectPDF=Select a PDF file:
+removeCertSign.submit=Remove Signature
+
+
 #removeBlanks
 removeBlanks.title=Remover Páginas em Branco
 removeBlanks.header=Remover Páginas em Branco

src/main/resources/messages_pt_PT.properties

@@ -332,6 +332,10 @@ home.certSign.title=Assinar com Certificado
 home.certSign.desc=Assinar um PDF com um Certificado/Chave (PEM/P12)
 certSign.tags=autenticar,PEM,P12,oficial,criptografar
 
+home.removeCertSign.title=Remove Certificate Sign
+home.removeCertSign.desc=Remove certificate signature from PDF
+removeCertSign.tags=authenticate,PEM,P12,official,decrypt
+
 home.pageLayout.title=Layout de Múltiplas Páginas
 home.pageLayout.desc=Juntar várias páginas de um documento PDF em uma única página
 pageLayout.tags=juntar,composto,vista-única,organizar
@@ -655,6 +659,13 @@ certSign.name=Nome
 certSign.submit=Assinar PDF
 
 
+#removeCertSign
+removeCertSign.title=Remove Certificate Signature
+removeCertSign.header=Remove the digital certificate from the PDF
+removeCertSign.selectPDF=Select a PDF file:
+removeCertSign.submit=Remove Signature
+
+
 #removeBlanks
 removeBlanks.title=Remover Páginas em Branco
 removeBlanks.header=Remover Páginas em Branco

src/main/resources/messages_ro_RO.properties

@@ -332,6 +332,10 @@ home.certSign.title=Semnare cu certificat
 home.certSign.desc=Semnează un PDF cu un certificat/cheie (PEM/P12)
 certSign.tags=authenticate,PEM,P12,official,encrypt
 
+home.removeCertSign.title=Remove Certificate Sign
+home.removeCertSign.desc=Remove certificate signature from PDF
+removeCertSign.tags=authenticate,PEM,P12,official,decrypt
+
 home.pageLayout.title=Multi-Page Layout
 home.pageLayout.desc=Merge multiple pages of a PDF document into a single page
 pageLayout.tags=merge,composite,single-view,organize
@@ -655,6 +659,13 @@ certSign.name=Numele
 certSign.submit=Semnează PDF
 
 
+#removeCertSign
+removeCertSign.title=Remove Certificate Signature
+removeCertSign.header=Remove the digital certificate from the PDF
+removeCertSign.selectPDF=Select a PDF file:
+removeCertSign.submit=Remove Signature
+
+
 #removeBlanks
 removeBlanks.title=Elimină pagini goale
 removeBlanks.header=Elimină pagini goale

src/main/resources/messages_ru_RU.properties

@@ -332,6 +332,10 @@ home.certSign.title=Подписать сертификатом
 home.certSign.desc=Подписать PDF сертификатом/ключом (PEM/P12)
 certSign.tags=authenticate,PEM,P12,official,encrypt
 
+home.removeCertSign.title=Remove Certificate Sign
+home.removeCertSign.desc=Remove certificate signature from PDF
+removeCertSign.tags=authenticate,PEM,P12,official,decrypt
+
 home.pageLayout.title=Объединить страницы
 home.pageLayout.desc=Объединение нескольких страниц документа PDF в одну страницу
 pageLayout.tags=merge,composite,single-view,organize
@@ -655,6 +659,13 @@ certSign.name=Имя
 certSign.submit=Подписать PDF
 
 
+#removeCertSign
+removeCertSign.title=Remove Certificate Signature
+removeCertSign.header=Remove the digital certificate from the PDF
+removeCertSign.selectPDF=Select a PDF file:
+removeCertSign.submit=Remove Signature
+
+
 #removeBlanks
 removeBlanks.title=Удалить Пустые
 removeBlanks.header=Удалить Пустые Страницы

src/main/resources/messages_sk_SK.properties

@@ -332,6 +332,10 @@ home.certSign.title=Podpísať s certifikátom
 home.certSign.desc=Podpísať PDF s certifikátom/kľúčom (PEM/P12)
 certSign.tags=autentifikovať,PEM,P12,oficiálne,šifrovať
 
+home.removeCertSign.title=Remove Certificate Sign
+home.removeCertSign.desc=Remove certificate signature from PDF
+removeCertSign.tags=authenticate,PEM,P12,official,decrypt
+
 home.pageLayout.title=Viacstranové usporiadanie
 home.pageLayout.desc=Zlúčte viacero stránok PDF dokumentu do jednej stránky
 pageLayout.tags=zlúčiť,zjednotiť,jednostranový pohľad,organizovať
@@ -655,6 +659,13 @@ certSign.name=Meno
 certSign.submit=Podpísať PDF
 
 
+#removeCertSign
+removeCertSign.title=Remove Certificate Signature
+removeCertSign.header=Remove the digital certificate from the PDF
+removeCertSign.selectPDF=Select a PDF file:
+removeCertSign.submit=Remove Signature
+
+
 #removeBlanks
 removeBlanks.title=Odstrániť prázdne stránky
 removeBlanks.header=Odstrániť prázdne stránky

src/main/resources/messages_sr_LATN_RS.properties

@@ -332,6 +332,10 @@ home.certSign.title=Potpis sa sertifikatom
 home.certSign.desc=Potpisuje PDF sa sertifikatom/ključem (PEM/P12)
 certSign.tags=autentifikacija,PEM,P12,zvanično,šifrovanje
 
+home.removeCertSign.title=Remove Certificate Sign
+home.removeCertSign.desc=Remove certificate signature from PDF
+removeCertSign.tags=authenticate,PEM,P12,official,decrypt
+
 home.pageLayout.title=Višestruki prikaz stranica
 home.pageLayout.desc=Spaja više stranica PDF dokumenta u jednu stranicu
 pageLayout.tags=spajanje,kompozit,pojedinačan-prikaz,organizacija
@@ -655,6 +659,13 @@ certSign.name=Ime
 certSign.submit=Potpiši PDF
 
 
+#removeCertSign
+removeCertSign.title=Remove Certificate Signature
+removeCertSign.header=Remove the digital certificate from the PDF
+removeCertSign.selectPDF=Select a PDF file:
+removeCertSign.submit=Remove Signature
+
+
 #removeBlanks
 removeBlanks.title=Ukloni prazne stranice
 removeBlanks.header=Ukloni prazne stranice

src/main/resources/messages_sv_SE.properties

@@ -332,6 +332,10 @@ home.certSign.title=Sign with Certificate
 home.certSign.desc=Signs a PDF with a Certificate/Key (PEM/P12)
 certSign.tags=authenticate,PEM,P12,official,encrypt
 
+home.removeCertSign.title=Remove Certificate Sign
+home.removeCertSign.desc=Remove certificate signature from PDF
+removeCertSign.tags=authenticate,PEM,P12,official,decrypt
+
 home.pageLayout.title=Multi-Page Layout
 home.pageLayout.desc=Merge multiple pages of a PDF document into a single page
 pageLayout.tags=merge,composite,single-view,organize
@@ -655,6 +659,13 @@ certSign.name=Namn
 certSign.submit=Skriv under PDF
 
 
+#removeCertSign
+removeCertSign.title=Remove Certificate Signature
+removeCertSign.header=Remove the digital certificate from the PDF
+removeCertSign.selectPDF=Select a PDF file:
+removeCertSign.submit=Remove Signature
+
+
 #removeBlanks
 removeBlanks.title=Ta bort tomrum
 removeBlanks.header=Ta bort tomma sidor

src/main/resources/messages_tr_TR.properties

@@ -332,6 +332,10 @@ home.certSign.title=Sertifika ile İmzala
 home.certSign.desc=Bir PDF'i Sertifika/Anahtar (PEM/P12) ile imzalar
 certSign.tags=doğrula,PEM,P12,resmi,şifrele
 
+home.removeCertSign.title=Remove Certificate Sign
+home.removeCertSign.desc=Remove certificate signature from PDF
+removeCertSign.tags=authenticate,PEM,P12,official,decrypt
+
 home.pageLayout.title=Çoklu-Sayfa Düzeni
 home.pageLayout.desc=Bir PDF belgesinin çoklu sayfalarını tek bir sayfada birleştirir
 pageLayout.tags=birleştir,kompozit,tek-görünüm,düzenle
@@ -655,6 +659,13 @@ certSign.name=İsim
 certSign.submit=PDF'i İmzala
 
 
+#removeCertSign
+removeCertSign.title=Remove Certificate Signature
+removeCertSign.header=Remove the digital certificate from the PDF
+removeCertSign.selectPDF=Select a PDF file:
+removeCertSign.submit=Remove Signature
+
+
 #removeBlanks
 removeBlanks.title=Boşları Kaldır
 removeBlanks.header=Boş Sayfaları Kaldır

src/main/resources/messages_uk_UA.properties

@@ -332,6 +332,10 @@ home.certSign.title=Підписати сертифікатом
 home.certSign.desc=Підписати PDF сертифікатом/ключем (PEM/P12)
 certSign.tags=authenticate,PEM,P12,official,encrypt
 
+home.removeCertSign.title=Remove Certificate Sign
+home.removeCertSign.desc=Remove certificate signature from PDF
+removeCertSign.tags=authenticate,PEM,P12,official,decrypt
+
 home.pageLayout.title=Об'єднати сторінки
 home.pageLayout.desc=Об'єднання кількох сторінок документа PDF в одну сторінку
 pageLayout.tags=merge,composite,single-view,organize
@@ -655,6 +659,13 @@ certSign.name=Ім'я
 certSign.submit=Підписати PDF
 
 
+#removeCertSign
+removeCertSign.title=Remove Certificate Signature
+removeCertSign.header=Remove the digital certificate from the PDF
+removeCertSign.selectPDF=Select a PDF file:
+removeCertSign.submit=Remove Signature
+
+
 #removeBlanks
 removeBlanks.title=Видалити порожні
 removeBlanks.header=Видалити порожні сторінки

src/main/resources/messages_zh_CN.properties

@@ -332,6 +332,10 @@ home.certSign.title=使用证书签署
 home.certSign.desc=使用证书/密钥（PEM/P12）对PDF进行签署
 certSign.tags=身份验证、PEM、P12、官方、加密
 
+home.removeCertSign.title=Remove Certificate Sign
+home.removeCertSign.desc=Remove certificate signature from PDF
+removeCertSign.tags=authenticate,PEM,P12,official,decrypt
+
 home.pageLayout.title=多页布局
 home.pageLayout.desc=将PDF文档的多个页面合并成一页
 pageLayout.tags=合并、组合、单视图、整理
@@ -655,6 +659,13 @@ certSign.name=名称
 certSign.submit=签署 PDF
 
 
+#removeCertSign
+removeCertSign.title=Remove Certificate Signature
+removeCertSign.header=Remove the digital certificate from the PDF
+removeCertSign.selectPDF=Select a PDF file:
+removeCertSign.submit=Remove Signature
+
+
 #removeBlanks
 removeBlanks.title=删除空白
 removeBlanks.header=删除空白页

src/main/resources/messages_zh_TW.properties

@@ -332,6 +332,10 @@ home.certSign.title=使用憑證簽章
 home.certSign.desc=使用憑證/金鑰（PEM/P12）簽章 PDF
 certSign.tags=驗證,PEM,P12,官方,加密
 
+home.removeCertSign.title=Remove Certificate Sign
+home.removeCertSign.desc=Remove certificate signature from PDF
+removeCertSign.tags=authenticate,PEM,P12,official,decrypt
+
 home.pageLayout.title=多頁面版面配置
 home.pageLayout.desc=將 PDF 檔案的多個頁面合併到單一頁面
 pageLayout.tags=合併,複合,單一檢視,組織
@@ -655,6 +659,13 @@ certSign.name=名稱
 certSign.submit=簽章 PDF
 
 
+#removeCertSign
+removeCertSign.title=Remove Certificate Signature
+removeCertSign.header=Remove the digital certificate from the PDF
+removeCertSign.selectPDF=Select a PDF file:
+removeCertSign.submit=Remove Signature
+
+
 #removeBlanks
 removeBlanks.title=移除空白頁面
 removeBlanks.header=移除空白頁面

src/main/resources/templates/fragments/navbar.html

@@ -22,8 +22,7 @@
         <ul class="navbar-nav me-auto flex-nowrap">
 
           <!-- All Tools -->
-          <li class="nav-item dropdown dropdown-mega position-static"
+          <li class="nav-item dropdown dropdown-mega position-static">
-            th:classappend="${currentPage}=='remove-pages' OR ${currentPage}=='merge-pdfs' OR ${currentPage}=='split-pdfs' OR ${currentPage}=='crop' OR ${currentPage}=='adjust-contrast' OR ${currentPage}=='pdf-organizer' OR ${currentPage}=='rotate-pdf' OR ${currentPage}=='multi-page-layout' OR ${currentPage}=='scale-pages' OR ${currentPage}=='auto-split-pdf' OR ${currentPage}=='extract-page' OR ${currentPage}=='pdf-to-single-page' OR ${currentPage}=='add-password' OR ${currentPage}=='remove-password' OR ${currentPage}=='add-watermark' OR ${currentPage}=='cert-sign' OR ${currentPage}=='sanitize-pdf' OR ${currentPage}=='img-to-pdf' OR ${currentPage}=='file-to-pdf' OR ${currentPage}=='html-to-pdf' OR ${currentPage}=='url-to-pdf' OR ${currentPage}=='pdf-to-img' OR ${currentPage}=='pdf-to-word' OR ${currentPage}=='pdf-to-presentation' OR ${currentPage}=='pdf-to-text' OR ${currentPage}=='pdf-to-html' OR ${currentPage}=='pdf-to-xml' OR ${currentPage}=='pdf-to-pdfa' OR ${currentPage}=='sign' OR ${currentPage}=='repair' OR ${currentPage}=='compare' OR ${currentPage}=='show-javascript' OR ${currentPage}=='flatten' OR ${currentPage}=='remove-blanks' OR ${currentPage}=='remove-annotations' OR ${currentPage}=='extract-image-scans' OR ${currentPage}=='change-metadata' OR ${currentPage}=='add-image' OR ${currentPage}=='ocr-pdf' OR ${currentPage}=='change-permissions' OR ${currentPage}=='extract-images' OR ${currentPage}=='compress-pdf' OR ${currentPage}=='add-page-numbers' OR ${currentPage}=='auto-rename' OR ${currentPage}=='get-info-on-pdf' ? 'active' : ''">
             <a class="nav-link" id="navbarDropdown-1" href="#" role="button" data-bs-toggle="dropdown"
               aria-haspopup="true" aria-expanded="false">
               <span class="material-symbols-rounded">
@@ -141,6 +140,9 @@
                         <div
                           th:replace="~{fragments/navbarEntry :: navbarEntry ('cert-sign', 'workspace_premium', 'home.certSign.title', 'home.certSign.desc', 'certSign.tags', 'security')}">
                         </div>
+                        <div
+                          th:replace="~{fragments/navbarEntry :: navbarEntry ('remove-cert-sign', 'remove_moderator', 'home.removeCertSign.title', 'home.removeCertSign.desc', 'removeCertSign.tags', 'security')}">
+                        </div>
                         <div
                           th:replace="~{fragments/navbarEntry :: navbarEntry ('sanitize-pdf', 'sanitizer', 'home.sanitizePdf.title', 'home.sanitizePdf.desc', 'sanitizePdf.tags', 'security')}">
                         </div>

src/main/resources/templates/home.html

@@ -164,6 +164,9 @@
           <div
             th:replace="~{fragments/card :: card(id='cert-sign', cardTitle=#{home.certSign.title}, cardText=#{home.certSign.desc}, cardLink='cert-sign', toolIcon='workspace_premium', tags=#{certSign.tags}, toolGroup='security')}">
           </div>
+          <div
+            th:replace="~{fragments/card :: card(id='remove-cert-sign', cardTitle=#{home.removeCertSign.title}, cardText=#{home.removeCertSign.desc}, cardLink='remove-cert-sign', toolIcon='remove_moderator', tags=#{removeCertSign.tags}, toolGroup='security')}">
+          </div>
           <div
             th:replace="~{fragments/card :: card(id='multi-page-layout', cardTitle=#{home.pageLayout.title}, cardText=#{home.pageLayout.desc}, cardLink='multi-page-layout', toolIcon='dashboard', tags=#{pageLayout.tags}, toolGroup='organize')}">
           </div>

src/main/resources/templates/security/remove-cert-sign.html

@@ -0,0 +1,35 @@
+<!DOCTYPE html>
+<html th:lang="${#locale.language}" th:dir="#{language.direction}" th:data-language="${#locale.toString()}" xmlns:th="https://www.thymeleaf.org">
+  <head>
+  <th:block th:insert="~{fragments/common :: head(title=#{removeCertSign.title}, header=#{removeCertSign.header})}"></th:block>
+  </head>
+
+  <body>
+    <div id="page-container">
+      <div id="content-wrap">
+        <th:block th:insert="~{fragments/navbar.html :: navbar}"></th:block>
+        <br><br>
+        <div class="container">
+          <div class="row justify-content-center">
+            <div class="col-md-6 bg-card">
+              <div class="tool-header">
+                <span class="material-symbols-rounded tool-header-icon security">remove_moderator</span>
+                <span class="tool-header-text" th:text="#{removeCertSign.header}"></span>
+              </div>
+              <form action="api/v1/security/remove-cert-sign" method="post" enctype="multipart/form-data">
+                <div class="mb-3">
+                  <label th:text="#{removeCertSign.selectPDF}"></label>
+                  <div th:replace="~{fragments/common :: fileSelector(name='fileInput', multiple=false, accept='application/pdf')}"></div>
+                </div>
+                <div class="mb-3 text-center">
+                  <button type="submit" id="submitBtn" class="btn btn-primary" th:text="#{removeCertSign.submit}"></button>
+                </div>
+              </form>
+            </div>
+          </div>
+        </div>
+      </div>
+      <th:block th:insert="~{fragments/footer.html :: footer}"></th:block>
+    </div>
+  </body>
+</html>