Convert an Icon to a Stamp
Turn a flat icon into a single-ink impression — the simplest possible source for a stamp, and the one that thresholds almost perfectly.
Free preview · No signup · ~10 seconds
Drop an icon — the largest export you have
PNG, JPG, WebP, SVG or a 1-page PDF — up to 20 MB
Runs entirely in your browser. Your image is never uploaded.
Why icons make the cleanest stamps
Already halfway there
Most icons are a single flat colour on transparency, which is already the structure of a stamp. The threshold mainly removes anti-aliasing and normalises the ink, so the cut-off can sit very high — 210 is a sensible start.
Anti-aliasing is the thing being removed
The soft grey pixels around a glyph make it look right on screen and wrong on a die. Thresholding hardens them into ink or nothing, which is exactly what a cutter or a screen needs.
Thin strokes are the risk
An outline-style icon at a small export size can lose its thinnest strokes when the anti-aliasing is hardened away. Work from the largest export you have, not a 24-pixel one.
Ink colour is the whole design
With no shading left, colour is the only variable. Red for urgency, black for authority, green for approval — the icon carries the meaning and the ink carries the tone.
Stays transparent throughout
A transparent icon in gives a transparent stamp out, so it drops onto a document or a label without a box behind it.
Picking the right icon
Filled beats outline
Outline glyphs rely on thin strokes that anti-aliasing is holding together. Thresholding removes that support and the stroke can vanish.
Start from the biggest export
A 512-pixel icon thresholds cleanly; a 24-pixel one loses detail it never had room for. Scale down afterwards, never before.
Let the ink carry the tone
With no shading left, colour is your only remaining variable. Match the convention: red urgent, black official, green approved.
How to convert an icon to a stamp
Upload the icon
Use the largest export you have — thin strokes survive better. Scanned to PDF instead? A single-page PDF works as well — page 1 is turned into an image in your browser.
Set the cut-off and ink
Start high and lower it only if strokes start disappearing.
Download
Free preview, or the full-resolution transparent PNG in the app.
Where an icon stamp works
Status marks
Turn a tick, a cross or a clock into an approved, rejected or pending stamp.
Handling labels
Make fragile, recyclable and this-way-up marks for packaging.
Document workflow
Build a consistent icon set for reviewed, filed and archived.
Product labelling
Produce single-ink marks that print cleanly on kraft and card.
Or just ask
Describe the edit in your own words
Type what you want changed and the assistant does it on the canvas — each step lands as a layer you can reopen, so nothing it does is baked in.
No edits yet.
Frequently Asked Questions
Related Tools
Guides worth reading
How to Fix Blurry or Fringed Edges on a Transparent PNG
Why your transparent PNG has a white halo, a grey fringe or soft edges — the four real causes, how to tell them apart in seconds, and the fix for each.
SVG vs PNG for Logos: Which File Do You Actually Need?
What SVG and PNG really are, where each one wins, why your developer keeps asking for the SVG, and the three files that cover almost every request.
What to DIY and What to Pay a Designer For
Where design money actually earns its return at pre-seed, where it doesn't, and the honest line between the work worth commissioning and the work worth doing yourself.
Turn your icon into a stamp
The flattest source there is, in one ink.