ONE RESIZER
All-in-One Image & PDF Tools

Sign PDF Online Free — Add Signature to PDF

Draw, type, or upload your electronic signature and place it anywhere on your PDF — 100% private in your browser.

🛡️ Privacy: Local browser processing for supported tools. Files are not uploaded to our server.
Local Browser Processing
Drop your PDF here to sign
or choose a document from your computer or phone
Browse PDF File
Supported: PDF Documents Draw / Type / Upload Signatures Lossless Native Quality

How to Add Signature to PDF Online for Free

  1. Step 1: Upload PDF — Drag and drop your document into the box or browse from your device.
  2. Step 2: Create Signature — Draw with your mouse/touchscreen, type using handwriting fonts, or upload a photo of your signature.
  3. Step 3: Place & Resize — Drag the signature overlay onto the signature line, adjust size and opacity.
  4. Step 4: Apply & Download — Click Apply Signature to permanently embed the electronic signature into your PDF.

Contracts, Job Offers, Leases & Application Forms

One Resizer provides tools designed to help prepare documents and photos for online submissions and application portals:

Frequently Asked Questions

You can draw your signature using a mouse/touchscreen, type your name using handwriting cursive fonts, or upload an existing signature PNG/JPG image.

Yes. You can position, resize, and add multiple independent signatures to any page of your multi-page PDF document.

No. All signature placement and PDF generation run 100% locally in your web browser. Your private documents never leave your device.