Signature Extractor
Turns a photo of a signature on paper into a clean transparent PNG, removing shadows and paper texture.
A photo of a signature on paper is mostly paper: a grey-white field with a shadow across it, a texture, and some ink. This keeps the ink and drops the rest, including the half-transparent pixels along each stroke edge, so the result sits on a document without a box round it.
Drop a photo of a signature on paper
Shadows, uneven lighting and paper texture come off; the strokes come out as a transparent PNG. The photo is not uploaded.
How to use it
Photograph it well
A clear pen on white paper, the signature filling most of the frame, and no shadow falling across the strokes. That is most of the result.
Adjust the sensitivity
Higher keeps faint strokes and may keep the paper’s blemishes with them; lower loses the lightest part of a stroke.
Check against the chequerboard
The chequerboard is transparency. If you can see grey paper in it, lower the sensitivity.
Common questions
It found almost no strokes.
Usually a pencil, a faint pen, or a photograph where the signature is small in the frame. Raise the sensitivity first; if that brings the paper with it, take the photo again closer.
Can I change the ink colour?
Yes — black, blue, or as photographed. Recolouring keeps the stroke’s alpha, so a blue signature made from a black one still has soft edges rather than a hard cutout.
Is the photo uploaded?
No. It is decoded and processed in this tab, which matters more here than on most pages — a signature is exactly the kind of thing not to hand to a server.
Feed it from
Signature Maker
Draw your signature with a mouse, finger or stylus and download it as a transparent PNG or SVG.
PNG Compressor
Quantises the palette and rewrites the deflate stream to shrink a PNG without changing its dimensions.
JPEG Compressor
Re-encodes a JPEG at a chosen quality with a live before/after size and a difference view.
WebP Converter
Converts images to or from WebP, with a quality slider and lossless mode.
Next
These accept what this tool produces, so the result can go straight in.
Background Remover
Keys out a flat or single-colour background in OKLab and returns a transparent PNG, with a brush for fixing the edges.
Transparency Tools
Trims transparent borders, flattens alpha onto a chosen colour, or extracts the alpha channel as a mask.
PDF Fill & Sign
Fills in a received PDF for submission: tick checkboxes, type text and dates, place a signature or stamp, then flatten.
Signature Maker
Draw your signature with a mouse, finger or stylus and download it as a transparent PNG or SVG.
EXIF Remover
Strips camera, GPS and editing metadata from photos while leaving the pixels untouched.
Favicon Generator
Produces the whole favicon set — ICO, PNGs, Apple touch icon, web manifest — plus the HTML to paste.