Sign PDF
Add secure digital signatures, initials, dates, and stamps to documents instantly.
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How Sign PDF Works
Upload your PDF document to the signing workspace.
Draw, type, or upload your signature into your private browser vault.
Position and resize your signature or date stamp on the document, then click Save PDF.
Frequently Asked Questions
How do I sign a PDF document online?
Upload your PDF, draw your signature using a mouse or touchscreen, type your name in a script font, or upload an image of your signature, place it on the desired page, and save.
Are my signed documents or signatures uploaded to your servers?
No. Your PDF and your signature graphic remain strictly on your local device. The signature is embedded into the PDF bytes directly in your browser memory.
Can I draw my signature using a phone or tablet touchscreen?
Yes! Our high-precision signature canvas supports smooth touch and stylus input (like Apple Pencil or Android stylus) with pressure-sensitive strokes.
Can I add dates, initials, and checkmarks alongside my signature?
Yes. You can place customizable text boxes for dates, names, job titles, initials, and checkmarks anywhere on the document.
Is this signature legally binding?
In many jurisdictions, electronic signatures (e-signatures) created with user intent are legally valid under statutes like the U.S. ESIGN Act and EU eIDAS regulation for everyday business agreements.
Can I resize and reposition the signature after placing it?
Yes. You can drag the signature to any coordinates and use corner handles to scale its size proportionally.
Can I sign multi-page documents on different pages?
Yes. You can navigate through all pages of the PDF and place signatures, stamps, or initials wherever required.
Does the sign tool flatten the signature into the PDF?
Yes. The signature is embedded directly into the document content streams so it cannot be easily removed or altered.
Can I upload a transparent PNG of my physical signature?
Yes. You can upload an existing PNG, JPEG, or WebP scan of your signature with transparency support.
Is my signature saved on your servers for future use?
No. We never store your signature on any server. You can optionally save it in your own browser's local storage for convenience.
Can I sign documents while offline?
Yes. Once the tool page is loaded, the signature canvas and PDF embedding engine operate completely offline.
Does signing a PDF add any watermark or branding?
No. Your signed document is generated cleanly with zero promotional watermarks.
Can I sign encrypted or password-protected PDF files?
Yes, enter the password to open and sign the document, and download the updated signed copy securely.
Is there any limit on how many contracts I can sign?
No. You can sign unlimited documents without subscriptions or document count caps.
Why is an in-browser signing tool safer than cloud services?
Cloud signing providers store copies of your confidential contracts on their databases. Our tool guarantees zero cloud storage and absolute privacy.