Free 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.

This tool creates a visual signature embedded in the PDF. Legal validity depends on your jurisdiction and context.

No. The signature is embedded entirely in your browser using pdf-lib.

Yes, completely free.

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.

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.

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.

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.

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.

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.

An electronic signature is a broad term for any mark you add to show intent to sign — including a drawn or typed signature placed on the page. A digital signature is a specific, cryptographic type that attaches a certificate to the file, mathematically binding the signer's identity to the document and flagging any change made afterward. This tool creates a visual electronic signature: it draws an image of your handwriting onto the page, often called a simple or basic electronic signature. That is genuinely enough for many everyday agreements, but it does not embed a certificate or detect later tampering the way a certificate-based digital signature does. If a counterparty specifically requires certificate-backed signing, you will need a dedicated digital-signature service. For ordinary forms, contracts, and consents, draw and embed your signature here in a few clicks.

After you upload the PDF, the tool reads how many pages it contains and gives you a target-page control so the signature lands exactly where it belongs rather than always on page one. Pick the page you want, and the live preview re-renders that page so you can see it before signing. Then set the X position (from the left edge) and Y position (from the top edge) as percentages of the page, plus the width and height of the signature, and a dashed blue box shows roughly where it will sit. This lets you line the signature up with a signature line or date field on a later page, such as the final page of a contract. When you click Embed Signature, only that chosen page is modified. Upload your document above and select the page you need.

The signature is captured from a 500-by-150 drawing pad and saved as a transparent PNG, so its sharpness depends on how it was drawn and how large you stretch it on the page. A thin, hurried stroke scaled up to a wide box can look soft or jagged. To keep it crisp, draw slowly with a steady hand, pick a slightly heavier pen thickness so strokes have body, and avoid resizing the signature far larger than it was drawn. Drawing with a stylus on a tablet usually gives smoother results than a mouse. If you are unhappy with a draft, the Clear button wipes the pad so you can try again until it looks right. Strokes already use rounded caps and joins to smooth handwriting. Adjust the thickness and size sliders, redraw if needed, then embed your signature.

Yes. Before or while you draw, you can choose from three ink colors — black, blue, or red — which cover the conventions people follow for official paperwork; blue is often preferred to make a signature stand out from black printed text, while black reads as more formal. You can also set the pen thickness across several weights, so the line can be fine like a ballpoint or bolder like a marker, depending on the look you want and how large the signature will appear on the page. These choices affect only the appearance of your handwriting, not the document's text, and the signature is added as a transparent image so it sits cleanly over the page without a white box behind it. Pick your color and thickness, draw your signature, position it, and embed it into the PDF.

In many regions a drawn electronic signature can be legally valid and is routinely accepted for everyday agreements like consent forms, invoices, NDAs, and rental contracts, because what usually matters is clear intent to sign and agreement between the parties. However, validity is not universal: it depends on your jurisdiction, the type of document, and what the other party requires. Some documents — certain wills, property deeds, or notarized papers — may demand a witnessed or certificate-based signature instead. This tool produces a visual signature, not a certificate-backed digital signature, so it does not by itself prove identity or detect tampering. For high-stakes or regulated agreements, confirm the requirements before relying on a drawn signature. For the many routine documents where a simple electronic signature is accepted, upload your PDF and sign it in your browser.