PDF Signature Stamper
Free online tool to add digital signatures to PDF documents. No registration, no watermarks, works instantly in your browser.
- ✓ Add signatures to PDF
- ✓ Multi-page support
- ✓ Adjustable size
- ✓ No registration
- ✓ 100% free
- ✓ Works on all devices
Select a PDF file to begin
Why use PDF Signature Stamper?
Digital signatures have become essential in our increasingly paperless world. Whether you're signing contracts, approving documents, or authenticating paperwork, the ability to add signatures to PDF files quickly and securely is crucial. Our PDF Signature Stamper provides a professional solution that works entirely in your browser, ensuring your documents never leave your device.
Traditional methods of signing PDFs often require expensive software subscriptions, complex installations, or uploading sensitive documents to third-party servers. This creates security risks and privacy concerns, especially when dealing with confidential contracts, legal documents, or personal information. Our tool eliminates these concerns by processing everything locally on your computer using advanced client-side JavaScript and PDF manipulation libraries.
The process is remarkably simple: upload your PDF document, upload your signature image (or create one), and place it exactly where you need it on any page. The tool supports multi-page PDFs, allowing you to add signatures to multiple pages in a single operation. You can adjust the signature size to match your needs, ensuring it looks professional and fits perfectly within your document layout.
What makes our PDF Signature Stamper stand out is the complete privacy and security it offers. Unlike cloud-based signature services that require you to upload your documents to their servers, our tool processes everything in your browser. Your PDF never leaves your computer, your signature image is never transmitted over the internet, and we cannot access or view any of your documents. This is especially important for legal professionals, business owners, and anyone handling sensitive information.
🔒Privacy & Security
Zero Data Logging: Your data is processed 100% locally in your browser and never sent to our servers.
All processing happens client-side using advanced web technologies. Your files, data, and personal information remain completely private and secure. We don't store, log, or transmit any of your information. Once you close the browser tab, all data is cleared from memory.
💡Pro Tips & Advanced Use Cases
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Sign contracts and agreements digitally. Add your signature to legal documents, contracts, and agreements without printing or scanning.
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Approve documents quickly. Sign approval forms, invoices, and other business documents instantly from any device.
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Add signatures to multiple pages. Use the page navigation to sign multi-page documents efficiently in one session.
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Create a reusable signature image. Save your signature as a PNG file and reuse it for multiple documents.
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Adjust signature size for different document types. Use the size slider to make your signature fit perfectly on any document.
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Sign documents on mobile devices. Works perfectly on smartphones and tablets for signing documents on the go.
Frequently Asked Questions
Is my PDF document secure and private?
Absolutely. All processing happens entirely in your browser using client-side JavaScript. Your PDF document and signature image never leave your device, never get uploaded to our servers, and we cannot see or access any of your files. This ensures complete privacy and security, which is especially important for sensitive documents like contracts or legal paperwork.
What file formats are supported for signatures?
You can use any common image format for your signature, including PNG, JPG, JPEG, GIF, and WebP. The tool automatically handles different image formats and sizes. For best results, use a transparent PNG with a white or transparent background, as this will blend seamlessly with your PDF document.
Can I add signatures to multiple pages?
Yes! The tool fully supports multi-page PDFs. You can navigate between pages using the page controls, place signatures on any page you need, and add as many signatures as required. Each signature is positioned independently, allowing you to customize the placement for each page of your document.
Can I adjust the signature size?
Yes, you can adjust the signature size using the size slider. This allows you to make your signature larger or smaller to fit perfectly within your document layout. The size adjustment is real-time, so you can see exactly how it will look before saving.
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