eSign PDF Online Free
Add your signature to any PDF without printing or scanning. Draw, type, or upload your signature, then place it on any page and download instantly. No signup. Your file never leaves your browser.
Drop your PDF here
or click to browse — nothing is uploaded
How to Sign a PDF Online
- 1Open your PDF. Drag the file onto the upload area or click to browse. The document loads locally — nothing is uploaded to a server.
- 2Create your signature. Choose Draw to sign with your mouse or finger, Type to render your name in a signature font, or Image to upload a PNG/JPG of your existing handwritten signature.
- 3Place it on the PDF. Click "Place Signature on PDF", then click anywhere on any page. Click the signature to select it, drag to reposition, or use the corner handle to resize. Add signatures to multiple pages if needed.
- 4Download the signed PDF. Click "Download Signed PDF" to save a new file with the signature embedded. The original document structure and formatting are preserved.
Electronic vs Digital Signatures
An electronic signature is any electronic indication of intent to agree — a typed name, a drawn mark, or an image of a handwritten signature. This tool produces electronic signatures. A digital signature is a cryptographically verifiable record tied to a certificate authority, used in high-assurance workflows. For most everyday documents — contracts, consent forms, offer letters, NDAs — an electronic signature is legally sufficient in most countries.
Tips for a Clean Signature
Use a stylus on mobile
Drawing with an Apple Pencil or Android stylus produces a much more natural-looking signature than a finger.
Upload a scanned signature
Sign on white paper, photograph it, crop tightly in any image editor, then upload as PNG for the cleanest result.
Match the signature size to the field
Drag the resize handle until the signature fits naturally in the signature line. Aim for a height of about one text line.
Sign multiple copies at once
Use the same placed signature across all pages at once. The tool lets you place as many signatures as needed before downloading.
Keep initial files
Archive both the unsigned original and the signed PDF so you have a clean copy for future modifications.
Check the final position
Scroll through all pages before downloading to confirm each signature is in the correct position and at the right scale.
Frequently Asked Questions
Is my PDF uploaded to a server?
No. Everything happens in your browser using the Web Crypto API, PDF.js, and pdf-lib. Your file never leaves your device — no server ever receives the document or your signature.
Is an electronic signature legally binding?
Electronic signatures are legally recognised in most jurisdictions under laws such as the US ESIGN Act, the EU eIDAS Regulation, and equivalent legislation in many other countries. For contracts where both parties consent electronically, an e-signature is typically sufficient. For specific legal or notarised documents, consult a legal professional.
What signature types are supported?
Three modes are supported: Draw (freehand using your mouse or touchscreen), Type (enter your name and choose a font style), and Image (upload a PNG or JPG of your handwritten signature). All three are embedded as images in the PDF output.
Can I place the signature on multiple pages?
Yes. After creating a signature, click "Place Signature on PDF" and click on any page. Repeat for each page or location where you need a signature. All placements are included when you download the signed PDF.
Can I resize or move the signature after placing it?
Yes. Click a placed signature to select it. Drag it to move it to a new position. Use the blue handle in the bottom-right corner to resize it. Click the red X button to remove it.
What happens to the original PDF content?
The original PDF bytes are loaded and preserved by pdf-lib. Your signature is embedded as an image on top of the existing content — the original text, formatting, and structure remain completely intact.
What browsers are supported?
Any modern browser works: Chrome, Firefox, Edge, Safari, and their mobile equivalents. The tool uses the File API, Canvas API, and WebAssembly (for PDF.js), which are all widely supported.