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Signature Image

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Place an image of your handwritten signature on a PDF page. This adds a picture, not a digital signature.

How to add a signature image to a PDF

  1. Choose the PDF you need to sign.
  2. Drop or choose a PNG or JPEG of your signature in the Signature image box.
  3. Choose pages, for example the last page, then set the position and width.
  4. Check the preview to see where the signature lands.
  5. Press Place visible signature image and download the copy.

Options

Stamp type
Signature image is selected on this page. Other modes add page numbers, watermarks or a header and footer.
Signature image
One PNG or JPEG of your signature. A PNG with a transparent background shows only the ink on the page.
Pages
All pages, or a list of pages such as 4 or 2, 7. A custom selection can hold up to 10,000 pages.
Placement
Top left, top, top right, centre, bottom left, bottom or bottom right. The default is bottom right.
Image width
5% to 80% of the page width, in steps of 5. The default is 25%. The image keeps its proportions.
Opacity
10% to 100% in steps of 10. The default is 100%, so the signature is fully solid.

What you get

  • One PDF named after the original with "(signature image)" added to the file name.
  • The signature appears as an image on the chosen pages. Other pages are unchanged.
  • No certificate, signer identity, timestamp or audit trail is added.

Limits

  • This is not a digital or cryptographic signature. The PDF will not show as signed in a reader's signature panel.
  • Placement uses seven fixed positions. You cannot drag the signature onto a signature line.
  • PNG and JPEG only. PNG files must be 8-bit, non-interlaced and not animated.
  • One signature image per run. To place two different signatures, run the tool twice.
  • Adding the image rewrites the PDF, so any existing digital signature may stop validating.

Check the result

Open the saved copy and check the signature's position on each chosen page. If the agreement requires an electronic or digital signature, confirm with the other party that an image is acceptable.

Questions

Is this a legally binding signature?

Deckle places a picture of your signature. Whether that is acceptable depends on the document and the people relying on it. It is not a certificate-based digital signature.

What is the difference from a digital signature?

A digital signature uses a certificate to prove who signed and that the file has not changed since. A signature image only shows your signature on the page and proves neither.

How do I make a signature image?

Sign on white paper, photograph or scan it, and crop it close to the ink. A PNG with a transparent background looks cleanest on the page.

Can I put the signature exactly on the signature line?

Not precisely. Choose the nearest of the seven positions and adjust the width. The preview shows where it will land before you save.

Will this break an existing digital signature?

It may. Adding the image rewrites the PDF, so a signature applied earlier may no longer validate. Sign digitally after placing the image, not before.

Can I initial every page?

Yes. Choose All pages and a small width, such as 10%, at bottom right. The same image is placed on each page.

Is my signature uploaded?

No. The PDF and the signature image are read in your browser and are not uploaded.

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