What is the Sign PDF tool?
This sign PDF tool adds your signature to a PDF without printing, scanning or installing anything. Draw it with your mouse or finger, type your name in a signature-style font, or upload a photo of your signature, then drag it into place on any page and download the signed file. It creates an electronic signature - an image placed on the page - not a certificate-based digital signature, and everything happens on your device.
How to use the Sign PDF tool
- Choose the PDF you want to sign.
- Draw, type or upload your signature.
- Click "Add signature to this page", then drag or resize it into place.
- Switch pages to add the signature again if you need to sign more than one page.
- Optionally tick "Add today's date", then click Sign PDF and download the file.
Features
- Draw with a mouse or finger, type, or upload a signature image
- Drag and resize the signature on any page
- Sign several pages in one PDF
- Optional date stamped under the signature
- Private - your PDF and signature never leave your device
What kind of signature is this?
This tool creates an electronic signature: an image of your drawn, typed or uploaded signature placed onto the page, the same way you might sign a printed form by hand. It is not a certificate-based digital signature backed by a public key and identity check, and it does not add any cryptographic proof to the file. For everyday agreements this is usually enough, but check what a specific contract or authority requires before relying on it for anything legally sensitive.
Tips for a clean-looking signature
Draw slowly and a little larger than you need - the signature can be resized afterwards without losing detail. If you upload a photo of your signature, use good lighting and a plain white background and crop it closely; a PNG with a transparent background places most naturally onto page content.
Frequently asked questions
Is this a legally binding digital signature?
It creates an electronic signature - a signature image placed on the PDF - not a certificate-based digital signature with identity verification. Many everyday agreements accept electronic signatures, but for anything legally sensitive check what the other party or authority requires first.
Can I sign more than one page?
Yes. Switch to another page with the page navigator and click "Add signature to this page" again; each placement can be moved and resized independently.
Are my PDF and signature uploaded anywhere?
No. The PDF is opened, signed and saved entirely in your browser with JavaScript, and nothing is sent to a server.
Can I move, resize or remove a signature after placing it?
Yes. Drag it to move, drag the corner handle to resize, or click the × button to remove it, all before you click Sign PDF.
What image formats can I upload for my signature?
PNG, JPG and WebP. A PNG with a transparent background usually looks best since it does not cover the page behind it with a white box.