Stamps, Signatures & Watermarks
Professional PDF tool for adding stamps, signatures, seals, and watermarks to any document instantly.
- Stamps & seals placement
- Digital signatures
- Watermarks (text & image)
- Multi-page processing
- Transparent PNG support
Free PDF Stamp Tool • PDF Converter • Online Document Signing • Digital Stamp Creator
Add Stamp to PDF Online
1,316stamps applied
Watch how easy it is to add stamp to PDF online and convert files to PDF in seconds using our free PDF stamp tool, PDF converter, PDF signature tool, and digital stamp PDF creator
Convert to PDF Online
Fast PDF converter for DOC, DOCX, JPG, PNG, TIFF, and other formats. Convert up to 10 files at once.
- DOC, DOCX, RTF, HTML, EPUB
- JPG, PNG, TIFF images
- Batch conversion (10 files)
- Max 50 MB per file
Privacy & Security First
Your documents are safe with us. Enterprise-grade security for all your PDF processing needs.
- Auto-delete after processing
- HTTPS encryption
- No file storage
- GDPR compliant
Choose Your Plan
Free
Try out the service
$0/month
- 3 stamps/day
- 1 conversion/day
1-Day Trial
Full Pro toolkit for 24h
$1.99
- Unlimited docs
- Advanced placement
- PNG support
- Priority support
- Auto cancel
Pro Stamp
Unlimited stamps
$9.99/month
- Unlimited
- AI placement
- Batch mode
- Priority support
Pro Converter
Unlimited conversions
$3.99/month
- Unlimited
- 10 files at once
- All formats
- 50 MB/file
Super Pro Stamp+Converter
All features
$12.99/month
- Unlimited stamps
- Unlimited converter
- Batch mode
- Pro templates
- 24/7 support
- No limits
Trusted by Professionals Worldwide
Our free PDF stamp tool and online document signing platform is used by professionals across industries
For Lawyers & Legal Professionals
Complete legal document stamping workflows. Add official seals, signatures, and certifications to contracts, affidavits, and court filings. Our digital stamp creator ensures document authenticity and compliance with legal standards.
- • Legal document stamping
- • Contract certification
- • Court filing preparation
- • Document authentication
For Accountants & Financial Professionals
Streamline accounting PDF stamp workflows. Apply stamps to financial reports, audit documents, tax filings, and invoices. Our PDF annotation software helps maintain compliance and document integrity.
- • Accounting PDF stamp
- • Financial report certification
- • Audit document stamping
- • Tax filing preparation
For Notaries & Public Officials
Professional notary PDF stamp solutions. Create and apply digital notary seals to official documents. Our electronic signature maker ensures secure, verifiable notarization workflows.
- • Notary PDF stamp
- • Official seal application
- • Document notarization
- • Secure document verification
For Businesses & Organizations
Enterprise-grade business PDF stamp solutions. Batch process documents, maintain brand consistency, and streamline approval workflows. Perfect for HR, logistics, and administrative teams.
- • Business PDF stamp
- • Batch document processing
- • Approval workflow automation
- • Brand consistency management
Related Tools
FAQ
Everything you need to know about using our PDF stamp and signature tool.
Can I add a stamp to PDF for free?
Yes! StampDocs offers a free plan that allows you to add stamps to 3 PDF documents per day at no cost. No credit card required, no registration needed for basic use. Simply upload your PDF and stamp, and you're ready to go.
Are my documents secure?
Absolutely. All PDF files and stamp images are transferred over HTTPS encryption and are automatically deleted shortly after processing. We never use your PDFs for training, and we do not store your documents longer than necessary to generate the stamped PDF. Your privacy and security are our top priorities.
Can I upload my own stamp?
Yes! You can upload any company stamp, seal, or logo as a PNG, JPG, or SVG file. For best results, we recommend a high-resolution transparent PNG so your digital stamp blends cleanly with the PDF background. Our tool supports custom stamps for legal, accounting, and business use cases.
Does it work on mobile?
Yes! StampDocs is fully responsive and works on mobile devices, tablets, and desktops. You can add stamps to PDF documents from your smartphone or tablet using any modern web browser. No app installation required – everything works in your mobile browser.
How to Add a Stamp to a PDF Online
Adding a stamp to your PDF documents is simple with StampDocs. Our online tool lets you add digital stamps, company seals, and signatures to any PDF file in just three easy steps. No software installation required – everything works directly in your web browser.
1. Upload Your PDF Document
Start by uploading your PDF file to our secure platform. We support PDFs of any size up to 50 MB. Your document is encrypted during upload and processing to ensure maximum security.
2. Choose or Upload Your Stamp
You can either select from our library of pre-made stamps or upload your own custom stamp image. We recommend using transparent PNG files for the best results, as they blend seamlessly with your PDF background.
3. Position and Download
Click anywhere on your PDF to place the stamp exactly where you need it. You can resize and reposition the stamp as needed. Once you're satisfied, download your stamped PDF instantly.
Digital Stamps for Documents
Our platform supports various types of digital stamps for different business and legal needs:
Business Stamps
Add company logos, official seals, and corporate stamps to business documents, contracts, and invoices. Perfect for maintaining brand consistency across all your documents.
Legal Stamps
Lawyers and legal professionals use our tool to add official seals, notary stamps, and certification marks to legal documents, contracts, and court filings.
Contract Stamps
Mark contracts with approval stamps, signature seals, and verification marks. Our tool ensures your contracts are properly authenticated and ready for execution.
Why Choose StampDocs
No Installation Required
Unlike desktop software, StampDocs works entirely in your web browser. No downloads, no installations, no updates to manage. Access our tool from any device with an internet connection.
Secure Processing
Your documents are processed with enterprise-grade security. All files are encrypted in transit using HTTPS, and we automatically delete your documents shortly after processing. We never store your files permanently.
Works in Browser
Our tool is built with modern web technologies, ensuring fast performance and compatibility with all major browsers including Chrome, Firefox, Safari, and Edge. Works on desktop, tablet, and mobile devices.
PDF Stamp Tool for Teams
Batch Processing
Process multiple PDF documents at once with our batch processing feature. Perfect for teams that need to stamp hundreds of documents efficiently. Save time and maintain consistency across all your files.
Templates
Create and save stamp templates for quick reuse. Our template system lets you maintain a library of commonly used stamps, making it easy to apply the same stamp to multiple documents.
Dashboard
Access your stamping history, manage templates, and track your usage through our intuitive dashboard. Pro users get advanced analytics and reporting features.
Why Choose Our PDF Stamp Tool?
PDF Stamp – The Best Way to Add Stamp to PDF
Looking for a reliable PDF stamp tool? Our platform makes it easy to add stamp to PDF documents online. Whether you need a PDF signature tool for legal documents or a digital stamp PDF creator for business use, we provide the most intuitive PDF stamp online experience available.
Add Stamp to PDF Online – Fast and Secure
Our PDF stamp tool allows you to add stamp to PDF files in seconds. No downloads required – simply upload your PDF, choose your stamp, and click to place it. Our PDF signature tool ensures professional results every time, making it the preferred choice for lawyers, accountants, and notaries who need to add stamp to PDF documents regularly.
PDF Signature Tool – Professional Document Signing
Need a reliable PDF signature tool? Our platform combines the power of a PDF stamp tool with advanced signature capabilities. Create digital stamp PDF files that meet professional standards. Our PDF stamp online service is trusted by thousands of professionals who need to add stamp to PDF documents securely and efficiently.
Digital Stamp PDF Creator – Advanced Features
Our digital stamp PDF creator offers more than just basic stamping. As a comprehensive PDF signature tool, we provide batch processing, transparent PNG support, and AI-powered placement. Whether you're using our PDF stamp online tool for a single document or processing hundreds of files, you'll find our PDF stamp tool unmatched in quality and speed.
PDF Stamp Online – Trusted by Professionals
Why choose our PDF stamp online service? We're the leading PDF signature tool for professionals who need to add stamp to PDF files. Our digital stamp PDF creator ensures pixel-perfect accuracy, while our PDF stamp tool maintains the highest security standards. Join thousands of users who trust our PDF stamp online platform for their document needs.