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Tutorial5 min read

How to Put a Signature JPG Into a PDF

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BunnyPDF Team

October 6, 2026

You receive a PDF contract, agreement, or form. You need to sign it and return it.

One common approach is to print it, sign it by hand, scan it, and send the scan back. But you can also skip most of those steps by combining your signature image with the PDF document directly.

If you have photographed or scanned your handwritten signature and saved it as a JPG, you can attach it to the PDF as an additional page using BunnyPDF.

The Signature JPG Workflow

Here is a simple workflow many professionals use:

  1. Sign your name on a blank piece of paper.
  2. Photograph it with your phone or scan it.
  3. Save the image as a JPG.
  4. Combine the signature JPG with your PDF document.
  5. Send the combined PDF.

The result is a PDF that includes the original document plus your signature as an additional page.

A Real-World Example

You receive:

service-agreement.pdf — 3 pages

You sign on paper and photograph your signature:

signature.jpg

You combine them using BunnyPDF's JPG and PDF to PDF converter:

service-agreement.pdf + signature.jpg
↓
service-agreement-signed.pdf

You send service-agreement-signed.pdf back to the client.

How to Combine a Signature JPG With a PDF

  1. Step 1: Go to BunnyPDF's JPG and PDF to PDF converter.
  2. Step 2: Upload your PDF document and your signature JPG.
  3. Step 3: Arrange the files. The PDF document should come first, followed by the signature JPG at the end.
  4. Step 4: Create the combined PDF.
  5. Step 5: Download and send the final file.

Tips for a Clean Signature Image

  • Use good lighting. A well-lit photograph will produce a clearer image.
  • Sign on plain white paper. This makes it easier for the recipient to read your signature.
  • Crop the image to remove unnecessary background before saving the JPG.
  • Hold the camera steady. A blurry photograph of a signature may not be readable.

What About File Size?

A high-resolution photograph of a signature can be several megabytes. After combining, if the PDF becomes large, you can use BunnyPDF's Compress PDF tool to reduce the file size.

Frequently Asked Questions

Can I add a signature JPG to a PDF?

Yes. You can combine a signature JPG with an existing PDF to create a signed document using BunnyPDF.

Does the signature appear as a full page?

Yes. When you combine a JPG with a PDF, the image is added as an additional page in the document.

Is this legally acceptable as a signature?

This depends on the context and jurisdiction. For many informal agreements, a photographed signature is widely accepted. For legally binding documents requiring a certified electronic signature, check the specific requirements with the relevant authority.

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