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Sign PDF Online Free

Draw your signature with a mouse or touchscreen and place it on any page of your PDF. 100% browser-based — your file never leaves your device.

Draw Your Signature

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Draw your signature in the box above using your mouse or finger

Your Privacy Is Protected

Your PDF is processed entirely in your browser. No files are uploaded to any server, and nothing is stored or shared.

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Sign PDF Files Online for Free

ToolSnak's Sign PDF tool lets you add a handwritten signature to any PDF document directly in your browser. Draw your signature using your mouse or a touch screen, select the page and position, and download the signed PDF instantly — completely free, with no account required.

What Is an Online PDF Signer?

An online PDF signer is a browser-based tool that allows you to add a drawn or typed signature to a PDF document without installing any software.

Unlike traditional PDF editors, ToolSnak's signer runs entirely on your device. Your PDF is never uploaded to a server, which means your private documents stay private.

Why Use ToolSnak to Sign PDFs?

  • 100% browser-based — no software installation needed
  • Draw your signature with a mouse, stylus, or finger on touch screens
  • Place the signature on any page of a multi-page PDF
  • Choose from three signature positions: bottom-left, bottom-center, bottom-right
  • Customize ink color and pen size for a natural look
  • Your file never leaves your device — complete privacy
  • Free to use with no watermarks or registration

How to Sign a PDF Online

  1. Upload your PDF by dragging it into the drop zone or clicking Choose File
  2. Draw your signature in the signature canvas using your mouse or finger
  3. Select the ink color and pen size you prefer
  4. Choose the page you want the signature placed on
  5. Select a signature position: Bottom Right, Bottom Left, or Bottom Center
  6. Click Sign PDF and download your signed document

Sign PDF vs. Paid Alternatives

Many PDF signing tools require a monthly subscription, account creation, or a desktop application. ToolSnak Sign PDF requires none of these — just open the page and sign.

Unlike Adobe Acrobat, DocuSign, or Smallpdf, ToolSnak processes everything locally in your browser, offering the same result with better privacy and zero cost.

Related PDF Tools

Sign PDF Online Free - Add Signature to PDF | ToolSnak

Got Questions? We have you covered

The drawn signature creates a visual representation of your handwritten signature on the PDF. For legally binding e-signatures under regulations like eIDAS or ESIGN, consult a qualified legal professional, as requirements vary by jurisdiction.

No. All processing happens entirely in your browser using client-side technology. Your PDF file is never sent to any server.

Yes. After uploading your PDF, use the page selector to choose exactly which page you want your signature placed on.

Yes. The signature canvas supports touch input, so you can draw your signature naturally with your finger on any smartphone or tablet.

No. The tool is completely free and adds no watermarks to your signed PDF document.

Support ToolSnak’s Mission

ToolSnak is completely free — no sign-ups, no limits. Enjoy AI writing tools, OCR, and more with zero hassle. Want to help us grow? We love your support. Thank you!

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Sign PDF Online Free - Add Signature to PDF | ToolSnak