Free PDF Signature Tool
Draw your signature on a canvas and embed it into a PDF file. Choose position and size. Download the signed PDF instantly from your browser.
Upload PDF
Drag and drop a PDF here, or click to select
How It Works
- Upload a PDF and draw your signature in the signature pad
- Choose signature color (black, blue, red) and line thickness
- Use sliders to position and size the signature on the page
- Preview shows approximate placement with a blue outline
- Click "Embed Signature" to bake the signature into the PDF
- All processing happens in your browser — files are never uploaded
- Note: Electronic signatures may not be legally binding in all jurisdictions
Frequently Asked Questions
What is the PDF Signature Tool?
The PDF Signature Tool is a free online tool that draw your signature on a canvas and embed it into a pdf file. choose position and size. download the signed pdf instantly from your browser.. It runs entirely in your browser with no installation or sign-up needed.
Is this legally binding?
This tool creates a visual signature embedded in the PDF. Legal validity depends on your jurisdiction and context.
Is my PDF uploaded anywhere?
No. The signature is embedded entirely in your browser using pdf-lib.
Is it free?
Yes, completely free.
Is my data safe with this tool?
Absolutely. The PDF Signature Tool processes everything client-side in your browser. No data is uploaded to or stored on any server. Your content remains private on your device at all times.
Does the PDF Signature Tool work on mobile devices?
Yes, the PDF Signature Tool is fully responsive and works on smartphones and tablets. You can use it on any device with a modern web browser -- no app download required.
Do I need to create an account to use this tool?
No account or registration is needed. Simply open the PDF Signature Tool in your browser and start using it immediately. There are no sign-up walls or usage restrictions.
Is there a file size limit?
Since the PDF Signature Tool processes files in your browser, the size limit depends on your device's memory. Most devices can handle PDFs up to 50-100MB without issues.
How do I use the PDF Signature Tool?
Simply enter your input in the provided field, adjust any settings to your preference, and the tool will process it instantly. You can then copy the result to your clipboard or download it.
Which browsers are supported?
The PDF Signature Tool works in all modern browsers including Chrome, Firefox, Safari, Edge, and Opera. For the best experience, use the latest version of your preferred browser.
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About Free PDF Signature Tool
Free PDF Signature Tool is a free, browser-based tool in our PDF Tools collection. Everything runs locally on your device — no uploads, no sign-up, and your data stays private.