How to remove the background from a seal or stamp

Three steps — and a transparent file is ready for Word, Excel, PDF, or Google Docs

SigCleaner removes the paper background, text, lines, and artifacts around the impression. Upload a photo or scan without registration, check the preview, and download a PNG in 1 processing step.

No watermarks

Use the service without registration. The result is a PNG with transparency.

How it works

From upload to download — less than a minute

1

Upload an image

Drag and drop a file into the upload area or click "Upload". PNG, JPG, and PDF (up to 20 MB) are supported.

You can also:

  • take a photo of the seal with your phone camera;
  • on a computer — use your phone camera to import an image;
  • paste a direct link to an image.
2

Crop the area

Select only the seal or signature — not the entire document. The less extra content in the frame, the cleaner the result.

If necessary, enable:

  • Extract individual elements — if both a seal and a signature are next to each other;
  • Aggressive mode — if there is a lot of text and lines around.
3

Download the file with transparency

Click "Remove background" and wait for processing (usually up to one minute).

What the service removes

SigCleaner cleans the background and excess elements around the seal impression or signature

Removes

  • White and colored paper background
  • Printed text and form numbers
  • Lines, grids, and tables around the impression
  • Shadows, spots, and random artifacts

Keeps

  • The outline and text of the seal itself
  • Handwritten signature with details
  • The color of the seal impression
  • Transparent background in PNG
Important when cropping

Crop exactly the impression, not the entire sheet. If there are too many details in the image, the SigCleaner algorithm might not be able to handle the task.

Useful modes

Extract seal

When there is a signature nearby — keep only the seal or stamp impression.

Extract signature

Only the handwritten signature is needed without a seal nearby.

Aggressive mode

A lot of text and form lines around the impression — enable aggressive mode.

What's next

Insert a seal in Word / Excel

How to insert a transparent PNG into Microsoft Office and Google Docs.

Frequently asked questions

Registration, limits, result quality, and security.

Insert a signature in PDF

Ways to add a transparent signature to a PDF document.

Try it now

Open the home page — upload a photo of a seal or stamp and get a transparent PNG in a minute.

Remove background now Help