PDF Utilities

Sign PDF Document

Draw your signature or type your name to sign PDF files online. Completely free, private, and browser-based.

100% Private · Runs locally in your browser 0 KB Uploaded

How Local Processing Works

1

Selected in Browser Memory

When you select or drop a file, your browser creates a temporary local Blob / ArrayBuffer pointer directly in your device's RAM.

2

Processed Client-Side

Our client-side engine (HTML5 Canvas & pdf-lib) processes the data directly using your computer or phone's CPU.

3

Saved Directly to Your Downloads

The resulting output is downloaded immediately to your device. When you close or refresh the tab, memory is cleared automatically.

Verify It Yourself

Open your browser's Developer Tools (F12 or Ctrl+Shift+I), switch to the Network tab, and convert any file. You will see zero network POST requests carrying file data.

✍️

Click to browse or drop your PDF here

Select any PDF to sign · 100% private in-memory processing

How to Sign a PDF Document Online

Adding a handwritten or typed signature to contracts, tax forms, rental agreements, or invoices used to require printing and scanning physical paper. FreeFileTool allows you to digitally sign PDF documents directly in your browser without transmitting sensitive legal paperwork to remote servers.

Simple Steps to Sign

  1. Load PDF: Select your file or drag it into the signer zone.
  2. Create Signature: Draw your signature using your mouse, trackpad, or touchscreen, or type out your full name.
  3. Select Page & Fields: Specify which page to sign and optionally add date or name text fields.
  4. Sign & Download: Click "Sign & Download PDF" to embed your signature into the document and save it locally.

Privacy & Memory Limits

Your signature image data and document contents are strictly held inside temporary browser memory and are deleted the moment you close or refresh the tab.

Frequently Asked Questions

Is my signature stored on your server?

No! Your signature drawing, typed text, and document contents remain strictly in your browser's local RAM. No data is stored, sent, or transmitted anywhere.

Can I choose which page to sign?

Yes, you can select any page number from your document, position the signature box visually, and adjust the dimensions before downloading.

Can I add date and name text fields alongside my signature?

Yes! You can enter additional fields like Full Name, Date, or Title to stamp onto the document alongside your handwritten signature.

Is a browser-based digital signature legally binding?

In most jurisdictions (e.g. US ESIGN Act, eIDAS in the EU), electronic signatures placed on documents with mutual consent are legally binding. Check local legal standards for specific contract requirements.