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< title >
Validate PDF Signature Online Free - Verify Digital Signatures | BentoPDF
< / title >
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name="title"
content="Validate PDF Signature Online Free - Verify Digital Signatures | BentoPDF"
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content="★ Verify PDF digital signatures online free ★ Check certificate validity ★ View signer details ★ No signup ★ Privacy-first ★ Works in browser"
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content="validate pdf signature, verify digital signature, check pdf certificate, signature verification, pdf security"
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content="★ Verify PDF digital signatures online free ★ Check certificate validity ★ View signer details ★ Privacy-first"
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< link href = "/src/css/styles.css" rel = "stylesheet" / >
< link rel = "manifest" href = "/site.webmanifest" / >
< link rel = "icon" type = "image/svg+xml" href = "/images/favicon.svg" / >
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< body class = "antialiased bg-gray-900" >
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{{> navbar }}
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< div
id="uploader"
class="min-h-screen flex flex-col items-center justify-start py-12 p-4 bg-gray-900"
>
< div
id="tool-uploader"
class="bg-gray-800 rounded-xl shadow-xl px-4 py-8 md:p-8 max-w-2xl w-full text-gray-200 border border-gray-700"
>
< button
id="back-to-tools"
class="flex items-center gap-2 text-indigo-400 hover:text-indigo-300 mb-6 font-semibold"
>
< i data-lucide = "arrow-left" class = "cursor-pointer" > < / i >
< span class = "cursor-pointer" data-i18n = "tools.backToTools" >
Back to Tools
< / span >
< / button >
< h1
class="text-2xl font-bold text-white mb-2"
data-i18n="tools:validateSignaturePdf.name"
>
Validate PDF Signature
< / h1 >
< p
class="text-gray-400 mb-6"
data-i18n="tools:validateSignaturePdf.subtitle"
>
Verify digital signatures in your PDF files. Check certificate
validity, view signer details, and confirm document integrity. All
processing happens in your browser.
< / p >
< div
id="drop-zone"
class="relative flex flex-col items-center justify-center w-full h-48 md:h-64 border-2 border-dashed border-gray-600 rounded-xl cursor-pointer bg-gray-900 hover:bg-gray-700 transition-colors duration-300"
>
< div class = "flex flex-col items-center justify-center pt-5 pb-6" >
< i
data-lucide="cloud-upload"
class="w-10 h-10 mb-3 text-gray-400"
>< / i >
< p class = "mb-2 text-sm text-gray-400" >
< span class = "font-semibold" data-i18n = "upload.clickToSelect"
>Click to select a file< /span
>
< span data-i18n = "upload.orDragAndDrop" > or drag and drop< / span >
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< / p >
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< p
class="text-xs text-gray-500"
data-i18n="upload.hints.pdfDocuments"
>
PDF Documents
< / p >
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< p class = "text-xs text-gray-500" data-i18n = "upload.filesNeverLeave" >
Your files never leave your device.
< / p >
< / div >
< input
id="file-input"
type="file"
class="absolute top-0 left-0 w-full h-full opacity-0 cursor-pointer"
accept="application/pdf"
/>
< / div >
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< div id = "file-display-area" class = "mt-4 space-y-2" > < / div >
< div id = "custom-cert-section" class = "hidden mt-6 space-y-3" >
< div class = "flex items-center justify-between" >
< h2 class = "text-sm font-semibold text-gray-300" >
Custom Certificate File X.509 (Optional)
< / h2 >
< / div >
< p class = "text-xs text-gray-500" >
Upload a trusted X.509 certificate to validate against a custom
trust source.
< / p >
< div
id="cert-drop-zone"
class="relative flex flex-col items-center justify-center w-full h-24 border-2 border-dashed border-gray-600 rounded-xl cursor-pointer bg-gray-900 hover:bg-gray-700 transition-colors duration-300"
>
< div class = "flex flex-col items-center justify-center py-2" >
< i data-lucide = "shield" class = "w-6 h-6 mb-1 text-gray-400" > < / i >
< p class = "text-xs text-gray-400" >
Upload certificate (.pem, .crt, .cer)
< / p >
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< / div >
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< input
id="cert-input"
type="file"
class="absolute top-0 left-0 w-full h-full opacity-0 cursor-pointer"
accept=".pem,.crt,.cer,.der"
/>
< / div >
< div id = "cert-display-area" class = "space-y-2" > < / div >
< / div >
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< div id = "results-section" class = "hidden mt-6" >
< h2 class = "text-lg font-semibold text-white mb-4" >
Signature Validation Results
< / h2 >
< div id = "results-container" > < / div >
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< / div >
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< / div >
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< / div >
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< div
id="loader-modal"
class="hidden fixed inset-0 bg-black bg-opacity-75 flex items-center justify-center z-50"
>
< div
class="bg-gray-800 p-8 rounded-lg flex flex-col items-center gap-4 border border-gray-700 shadow-xl"
>
< div class = "solid-spinner" > < / div >
< p id = "loader-text" class = "text-white text-lg font-medium" >
Processing...
< / p >
< / div >
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< / div >
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< div
id="alert-modal"
class="fixed inset-0 bg-gray-900 bg-opacity-90 flex items-center justify-center z-50 hidden"
>
< div
class="bg-gray-800 rounded-lg shadow-xl p-6 max-w-sm w-full border border-gray-700"
>
< h3
id="alert-title"
class="text-xl font-bold text-white mb-2"
data-i18n="alert.title"
>
Alert
< / h3 >
< p id = "alert-message" class = "text-gray-300 mb-6" > < / p >
< button
id="alert-ok"
class="w-full bg-indigo-600 hover:bg-indigo-700 text-white font-semibold py-2 px-4 rounded-lg transition-colors duration-200"
>
OK
< / button >
< / div >
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< / div >
<!-- How It Works Section -->
< section class = "max-w-4xl mx-auto px-4 py-12" >
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< h2
class="text-2xl md:text-3xl font-bold text-white mb-8 text-center"
data-i18n="howItWorks.title"
>
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How It Works
< / h2 >
< div class = "space-y-6" >
< div class = "flex items-start gap-4" >
< div
class="flex-shrink-0 w-10 h-10 bg-indigo-600 rounded-full flex items-center justify-center text-white font-bold"
>
1
< / div >
< div class = "flex-1" >
< h3 class = "text-lg font-semibold text-white mb-1" >
Upload Your PDF
< / h3 >
< p class = "text-gray-400" >
Select a digitally signed PDF file from your device
< / p >
< / div >
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< / div >
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< div class = "flex items-start gap-4" >
< div
class="flex-shrink-0 w-10 h-10 bg-indigo-600 rounded-full flex items-center justify-center text-white font-bold"
>
2
< / div >
< div class = "flex-1" >
< h3 class = "text-lg font-semibold text-white mb-1" >
Automatic Analysis
< / h3 >
< p class = "text-gray-400" >
The tool extracts and parses all digital signatures in the
document
< / p >
< / div >
< / div >
< div class = "flex items-start gap-4" >
< div
class="flex-shrink-0 w-10 h-10 bg-indigo-600 rounded-full flex items-center justify-center text-white font-bold"
>
3
< / div >
< div class = "flex-1" >
< h3 class = "text-lg font-semibold text-white mb-1" > View Results< / h3 >
< p class = "text-gray-400" >
See signer information, certificate validity, and signature status
< / p >
< / div >
< / div >
< / div >
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< / section >
<!-- Related Tools Section -->
< section class = "max-w-6xl mx-auto px-4 py-12" >
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< h2
class="text-2xl md:text-3xl font-bold text-white mb-6 text-center"
data-i18n="relatedTools.title"
>
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Related PDF Tools
< / h2 >
< div class = "grid grid-cols-2 md:grid-cols-3 lg:grid-cols-6 gap-4" >
< a
feat(i18n): add static pre-rendering for multi-language support
- Add `generate-i18n-pages.mjs` script to pre-render localized HTML files at build time
- Add `generate-sitemap.mjs` script to generate language-aware sitemap.xml
- Create `navbar-simple.html` and `footer-simple.html` partials for simple mode
- Update all 80+ tool pages with language routing support
- Expand supported languages to 12: en, de, es, fr, it, pt, tr, vi, id, zh, zh-TW
- Update i18n.ts with new language names and support configuration
- Implement languageRouterPlugin in vite.config.ts for dev server routing
- Update nginx.conf for production static file serving from language directories
- Update TRANSLATION.md with new architecture documentation and language addition guide
- Fix relative paths in 404.html for static deployment compatibility
- Update package.json with new build scripts and dependencies
- Improves SEO through static pre-rendering and proper sitemap generation
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href="digital-sign-pdf.html"
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class="block bg-gray-800 p-4 rounded-lg hover:bg-gray-700 transition-colors border border-gray-700"
>
< h3 class = "text-white font-semibold mb-1" > Digital Signature< / h3 >
< p class = "text-gray-400 text-sm" > Add cryptographic signature< / p >
< / a >
< a
feat(i18n): add static pre-rendering for multi-language support
- Add `generate-i18n-pages.mjs` script to pre-render localized HTML files at build time
- Add `generate-sitemap.mjs` script to generate language-aware sitemap.xml
- Create `navbar-simple.html` and `footer-simple.html` partials for simple mode
- Update all 80+ tool pages with language routing support
- Expand supported languages to 12: en, de, es, fr, it, pt, tr, vi, id, zh, zh-TW
- Update i18n.ts with new language names and support configuration
- Implement languageRouterPlugin in vite.config.ts for dev server routing
- Update nginx.conf for production static file serving from language directories
- Update TRANSLATION.md with new architecture documentation and language addition guide
- Fix relative paths in 404.html for static deployment compatibility
- Update package.json with new build scripts and dependencies
- Improves SEO through static pre-rendering and proper sitemap generation
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href="encrypt-pdf.html"
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class="block bg-gray-800 p-4 rounded-lg hover:bg-gray-700 transition-colors border border-gray-700"
>
< h3 class = "text-white font-semibold mb-1" > Encrypt PDF< / h3 >
< p class = "text-gray-400 text-sm" > Password protect PDF< / p >
< / a >
< a
feat(i18n): add static pre-rendering for multi-language support
- Add `generate-i18n-pages.mjs` script to pre-render localized HTML files at build time
- Add `generate-sitemap.mjs` script to generate language-aware sitemap.xml
- Create `navbar-simple.html` and `footer-simple.html` partials for simple mode
- Update all 80+ tool pages with language routing support
- Expand supported languages to 12: en, de, es, fr, it, pt, tr, vi, id, zh, zh-TW
- Update i18n.ts with new language names and support configuration
- Implement languageRouterPlugin in vite.config.ts for dev server routing
- Update nginx.conf for production static file serving from language directories
- Update TRANSLATION.md with new architecture documentation and language addition guide
- Fix relative paths in 404.html for static deployment compatibility
- Update package.json with new build scripts and dependencies
- Improves SEO through static pre-rendering and proper sitemap generation
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href="view-metadata.html"
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class="block bg-gray-800 p-4 rounded-lg hover:bg-gray-700 transition-colors border border-gray-700"
>
< h3 class = "text-white font-semibold mb-1" > View Metadata< / h3 >
< p class = "text-gray-400 text-sm" > Inspect PDF properties< / p >
< / a >
< / div >
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< / section >
<!-- FAQ Section -->
< section class = "max-w-4xl mx-auto px-4 py-12" >
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< h2
class="text-2xl md:text-3xl font-bold text-white mb-6 text-center"
data-i18n="faq.sectionTitle"
>
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Frequently Asked Questions
< / h2 >
< div class = "space-y-4" >
< details class = "bg-gray-800 p-5 rounded-lg border border-gray-700" >
< summary
class="cursor-pointer font-semibold text-white flex items-center justify-between"
>
What types of signatures can be validated?
< i data-lucide = "chevron-down" class = "w-5 h-5" > < / i >
< / summary >
< p class = "mt-3 text-gray-400" >
This tool validates PKCS#7 digital signatures created with X.509
certificates, the standard format used by most PDF signing tools and
certificate authorities.
< / p >
< / details >
< details class = "bg-gray-800 p-5 rounded-lg border border-gray-700" >
< summary
class="cursor-pointer font-semibold text-white flex items-center justify-between"
>
What does "Self-Signed Certificate" mean?
< i data-lucide = "chevron-down" class = "w-5 h-5" > < / i >
< / summary >
< p class = "mt-3 text-gray-400" >
A self-signed certificate is one where the issuer and subject are
the same. While the signature is technically valid, it means the
certificate wasn't issued by a trusted Certificate Authority (CA).
< / p >
< / details >
< details class = "bg-gray-800 p-5 rounded-lg border border-gray-700" >
< summary
class="cursor-pointer font-semibold text-white flex items-center justify-between"
>
Is my PDF uploaded to a server?
< i data-lucide = "chevron-down" class = "w-5 h-5" > < / i >
< / summary >
< p class = "mt-3 text-gray-400" >
No, all processing happens entirely in your browser. Your PDF files
never leave your device, ensuring complete privacy and security.
< / p >
< / details >
< / div >
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< / section >
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{{> footer }}
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< script type = "module" src = "/src/js/utils/lucide-init.ts" > < / script >
< script type = "module" src = "/src/js/utils/full-width.ts" > < / script >
< script type = "module" src = "/src/js/utils/simple-mode-footer.ts" > < / script >
< script type = "module" src = "/src/version.ts" > < / script >
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< script
type="module"
src="/src/js/logic/validate-signature-pdf-page.ts"
>< / script >
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< script type = "module" src = "/src/js/mobileMenu.ts" > < / script >
< script type = "module" src = "/src/js/main.ts" > < / script >
<!-- JSON - LD Structured Data -->
< script type = "application/ld+json" >
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{
"@context": "https://schema.org",
"@type": "SoftwareApplication",
"name": "Validate PDF Signature - BentoPDF",
"applicationCategory": "PDF Signature Verification Tool",
"operatingSystem": "Any - Web Browser",
"offers": {
"@type": "Offer",
"price": "0",
"priceCurrency": "USD"
},
"featureList": [
"Verify PDF digital signatures",
"View certificate details",
"Check signature validity",
"Extract signer information",
"Client-side processing"
]
}
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< / script >
< script type = "application/ld+json" >
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{
"@context": "https://schema.org",
"@type": "BreadcrumbList",
"itemListElement": [
{
"@type": "ListItem",
"position": 1,
"name": "Home",
"item": "https://www.bentopdf.com"
},
{
"@type": "ListItem",
"position": 2,
"name": "Validate PDF Signature",
"item": "https://www.bentopdf.com/validate-signature-pdf"
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]
}
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< / script >
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< / body >
< / html >
