Make a PNG transparent for POD
Every POD seller meets the white box: a design that looks great in the generator and arrives on a shirt as a rectangle. Marketplaces print what is in the file, so the background has to actually be transparent — not white, not 'looks transparent in the thumbnail'. The tool above removes a solid background properly: turn on background removal, set the tolerance, and watch the checkerboard appear where the shirt colour will show through. Then export at the exact size your marketplace demands, or go one step further and trace the cleaned design into a vector that scales forever.
Be clear about what this is: solid background removal. White backgrounds, flat colour backdrops — the way most logos and AI shirt art are generated — come off cleanly. A photograph of a product on a busy desk does not, and this page will tell you that honestly rather than chewing the edges off your subject.
The tolerance slider is the whole craft. Too low and a halo of almost-white clings to the design; too high and pale parts of the artwork itself start to dissolve. Work at the preview: raise it until the background is fully checkerboard, then stop. Because the removal happens before tracing, the vector that follows has clean edges instead of a traced white outline that you would have to delete by hand — the mistake baked into half the 'transparent' files sold online.
Once transparent, size stops being guesswork. The Merch button writes a 4500×5400 PNG at 300 DPI with the transparency intact; Printful and Printify get 3600×4800; stickers and custom sizes are there too. A quick look at the palette and stats tells you whether the file is print-lean or bloated before it ever reaches an upload form.
Your file never leaves the device — removal and tracing run in your browser, offline-capable, no account and no watermark — so the unreleased design you are prepping stays unreleased until you say otherwise.
FAQ
Which backgrounds can it remove?
Solid ones: white or a single flat colour, which covers most logos and AI-generated shirt art. Complex photographic backgrounds are not supported, and the tool labels that clearly.
How do I avoid a white halo around my design?
Raise the tolerance slowly until the preview checkerboard fully replaces the background, and check the edges at high zoom with the before/after slider before exporting.
Is the exported PNG really transparent?
Yes — transparency is rendered into the PNG and the 300 DPI is stamped into the file. The preview sits on a checkerboard precisely so you can verify it with your own eyes.