Sign PDF Online - Add Your Signature
Draw hand signature, type cursive name, or upload signature image.
Drop your PDF here
or
PDF files up to 100 MB
How to use Sign PDF
- 1Upload the PDFA page preview appears so you can see where the signature will go.
- 2Create your signatureDraw it with a mouse or finger, type it in a handwriting style, or upload a photo of a signature on white paper.
- 3Place itDrag the signature onto the page and pull its corner to resize it.
- 4Apply and downloadThe signature is drawn into the page and the signed PDF downloads.
Your files are processed over an encrypted connection and deleted automatically within one hour. Nothing is shared with anyone.
Sign PDF: what to know before you start
What this is, and what it is not
This adds a visible, handwritten-style signature image to the page - what most forms, agreements and internal approvals actually ask for.
It is not a cryptographic digital signature. It does not carry a certificate, does not prove who applied it, and does not detect later tampering. If you need a legally binding digital signature under eIDAS, the IT Act or ESIGN, you need a qualified certificate provider rather than an image.
Three ways to create the signature
Draw it with a mouse, trackpad or finger. A finger on a phone screen gives a surprisingly natural result - better than a mouse for most people.
Type your name and pick a handwriting style. Fast and legible, though it looks typed rather than signed on close inspection.
Upload a photo of a real signature. Sign a white sheet in dark ink, photograph it in even light, and upload. A PNG with a transparent background gives the cleanest placement.
Placing it
Drag the signature onto the page preview and pull its corner to resize. Move to another page and place it again to sign multiple pages - initialling every page of a contract is a common requirement.
The signature is drawn permanently into the page when you apply it, so check the placement before committing. Keep the unsigned original in case a correction is needed.
Frequently asked questions
How do I put a signature on a PDF?
Upload the PDF, then draw your signature with a mouse or finger, type your name in a handwriting font, or upload a photo of your signature. Click the page where it should go, resize it, and download the signed PDF. You can place it on as many pages as you need.
Is this a legally binding digital signature?
No. This adds a visible, handwritten-style signature image, which is what most forms and agreements ask for. It is not a cryptographic digital certificate.
How do I upload a signature photo?
Sign a white sheet of paper in dark ink, photograph it, and upload it. A PNG with a transparent background gives the cleanest result.
Can I sign more than one page?
Yes. Place the signature, move to another page in the preview, and place it again.
Is this tool free?
Yes. Every tool on WorkSathi is free to use with no sign up, no watermark on your result and no daily limit.
What happens to my files?
Files are uploaded over an encrypted connection, processed, and then deleted automatically within one hour. We never open, share or sell your documents.
Does it work on a phone?
Yes. The tools work in any modern browser on Windows, Mac, Android and iOS - there is nothing to install.
Related PDF tools
Lock confidential bank statements, tax forms, and contracts with AES-256 encryption.
Stamp confidential text or logo diagonally across PDF pages.
Number PDF pages starting from page 2, custom position, and header/footer styling.
Strip author name, creation dates, and hidden details from your PDF before sharing.