2026-07-253 min read
How to Sign PDF – Step by Step
Learn how to add a signature image to PDF files online for free.
Need to add your signature to a PDF contract or agreement? The Sign PDF tool places your signature image onto any page of your PDF at your chosen position.
Step-by-Step Guide
Open the Sign PDF page.
Upload your PDF.
Upload an image of your signature (a photo or scan of your signature on white paper works well).
Select the page number and position for the signature.
Click Sign PDF and download your signed document.
Tips for Best Results
- For a clean signature image, sign on white paper and take a well-lit photo or scan at 300 DPI.
- You can sign multiple pages by processing one page at a time.
- This creates a digital image of your signature — it's not a cryptographic digital signature.
Ready to try it? → Sign PDF