Sign PDF

Put your signature on a PDF without printing it out. Type your name in a handwriting style, upload a picture of your signature, or use a stamp such as APPROVED, then drag a box where it should go. Runs in your browser.

By the ScoutMyTool team · Last reviewed 14 November 2026 · How we build our tools

How do I sign a PDF online?

Choose your PDF, create your signature (typed, uploaded image or stamp), then drag a box on the page where it should appear and select Sign PDF. The signature is added as an image in your browser — nothing is uploaded.

or drag and drop it here

Runs in your browser — your file is not uploaded anywhere.

Signature or stamp

Font:

Ink color:

Type / Upload / Stamp / Library. Stamp offers ready-made APPROVED · CONFIDENTIAL · DRAFT · REVIEWED marks with adjustable colour. Saved signatures live in this browser only and never leave your device.

Choose a file to place it on the page.

More options

Mode

Verify mode cryptographically checks whether a digitally-signed PDF has been modified since it was signed — it only needs the PDF file (the signature/position fields below are for Sign mode and are ignored).

Page (if no box is drawn)

Ignored when you draw a signature box above (the box sets the page + position).

From left (points)

From bottom (points)

Width (points)

Opacity100%

Lower the opacity for a translucent stamp look (e.g. a "DRAFT"-style overlay). 100% = solid.

Add date and time

Adds a small timestamp line just below the signature, using your device's current local date and time at the moment you sign.

Rotate signature

Rotates the signature/stamp image before placing it.

How to use Sign PDF

Choose or drop your PDF.
Create your signature — type it, upload it, or pick a stamp.
Drag a box on the page where it should go, then select Sign PDF.

What kind of signature this is

This adds a picture of your signature to the page — the same as signing a printout and scanning it, and accepted for many everyday documents. It is not a certified digital signature (the kind issued by a trusted provider that proves who signed and locks the document). If a document requires one, use a certified signing service.

Signatures you create can be saved in this browser for next time; they never leave your device.

Checking a digital signature

Switch the mode to Verify to check a PDF that already has a certified digital signature: the tool reports whether the document has been changed since it was signed.

Frequently asked questions

Is my document uploaded?

No. The signature is added in your browser.

Is this signature legally valid?

An image signature is accepted for many everyday purposes, but some documents legally require a certified digital signature. If in doubt, check with whoever asked you to sign.

Where is my saved signature kept?

Only in this browser on this device. Clearing your browser data removes it.

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