KitJade
PDF & DocumentsRuns in your browserNew

Sign PDF

Place a drawn, typed or uploaded signature on a PDF.

Use the Sign PDF tool

Runs in your browserUpdated Report a problem

What this sign pdf does

Sign PDF inserts your signature image onto a page of a PDF: draw it with a mouse, trackpad or finger, type your name in a script style, or upload an existing signature image. You then click where it should go, choose how wide it appears, and save a new copy of the document.

This is a visible electronic signature, not a certificate-based digital signature. It does not prove who signed the document, does not use a private key or certificate, and cannot detect whether the file was changed afterwards. Many everyday forms accept a visible signature, but contracts, tax filings or regulated submissions may require a verified eSignature service or a cryptographic signature. Use the right level of assurance for the document in front of you.

Everything happens in the browser. Signatures of bank forms, rental agreements and identity documents are not uploaded, which is the main reason to sign locally rather than on an ad-funded web service.

Why use it

  • Sign a consent form, checklist or delivery note without printing it.
  • Add a signature image to a PDF on a phone or a locked-down work laptop.
  • Avoid uploading sensitive contracts to an unknown signing site.

How to use it

  1. 1Choose the PDF you need to sign.
  2. 2Draw your signature, type it, or upload a PNG/JPG of it.
  3. 3Click the page where the signature belongs and adjust the width.
  4. 4Press Save signed PDF and download the copy.

Worked examples

Drawn signature

Input

consent-form.pdf · drawn on trackpad · 22% width · bottom of page 1

Output

consent-form-signed.pdf · signature visible on page 1

Uploaded signature

Input

contract.pdf · signature.png uploaded · 30% width · page 3

Output

contract-signed.pdf · transparent signature placed on page 3

Common mistakes

  • Treating a visible signature as a verified digital signature. It is not: there is no certificate and no tamper detection.
  • Signing the wrong page because the page preview was not checked.
  • Uploading a signature image with a coloured background; use a transparent PNG or a clean white background and the tool will keep it readable.
  • Making the signature too small to recognise, or so wide that it covers text.

Frequently asked questions

Is this a legally valid digital signature?
It is a visible electronic signature, which is accepted for many everyday documents but is not a certificate-based digital signature. It does not verify identity or detect later edits. For regulated or high-value documents, use a qualified eSignature provider.
Can the signature be removed later?
Yes. The signature is drawn into the PDF page content, so anyone with a PDF editor can cover or alter it. That is one reason it does not provide tamper evidence.
Can I sign multiple pages?
The tool places one signature at a time. Sign the document, then sign the saved copy again for another page.
Does my signature get uploaded?
No. Drawing, typing, image processing and saving all run in your browser.
What image formats can I upload?
PNG and JPG. The image is normalised to PNG locally so transparency is preserved where present.

Related tools

All tools

PDF Editor

Click words to replace them, add text and manage pages locally.

Runs locallyNew

Merge PDF

Combine PDFs in any order, entirely on your device.

Runs locally

Compress PDF

Shrink PDFs with adjustable DPI and quality.

Runs locally

Split PDF

Extract page ranges or split a PDF into separate files.

Runs locally