Make a transparent signature or stamp
Upload a phone photo of a signature or stamp on paper and get a transparent PNG with only the ink.
Free · No sign-up · Files stay on your deviceHow to use
- Sign or stamp on white paper and take a bright photo from above.
- Upload the photo. The tool finds the ink color automatically; adjust sensitivity if needed.
- Save the transparent PNG or copy it to paste into documents.
FAQ
What if white edges remain?
Lower the sensitivity. If the strokes break up, raise it.
Can I keep the original ink texture?
Yes. Choose 'original texture' instead of 'sharpen ink color'.
Are my photos uploaded?
No. The photo is processed in your browser.
Want more tools? DoguBox has 33 tools in Korean, including PDF to Word/Excel, signatures and stamps. Open the Korean site with automatic translation →
More free tools
Remove background colorErase a solid background and make it transparent.
Watermark ImageAdd text or logo watermarks to many photos at once.
Remove EXIFView and remove GPS location and photo metadata.
Change DPIChange photo DPI to 300 without losing quality.
SVG to PNGConvert SVG logos and icons to sharp PNG images.
GIF MakerMake an animated GIF from photos.
Image ViewerOpen HEIC, WebP, AVIF and more in your browser.
HEIC to JPGConvert iPhone HEIC photos to JPG in bulk.