Background removed to real transparency, resolution raised to print size, exported as PNG or vector SVG.
Print-on-demand services reject more files for background problems than for anything else. A white background looks invisible on screen and prints as a white box on a coloured shirt, and a soft JPEG edge becomes a grey halo around the artwork.
The preparation is three concrete steps: cut the subject out with a real alpha channel, raise the resolution to what the printer needs, and export in a format that keeps the transparency. ImageLabs does all three, and every output keeps its alpha channel intact — nothing is flattened onto white along the way.
Remove the background: BiRefNet cuts the artwork out with a genuine alpha channel, including soft edges and thin detail, rather than knocking out a colour range.
Scale it to print size: Most print services want roughly 300 DPI at the printed size — around 3600 px across for a 12-inch chest print. Run the upscaler if your source is smaller.
Export PNG or SVG: PNG keeps photographic artwork with its transparency. For flat logos and line art, vectorize to SVG so it prints sharp at any size.
True transparency: Alpha is preserved end to end, so nothing prints as a white rectangle on a dark garment.
No watermark, any plan: Commercial output is never stamped, including on the free tier.
Vector option for logos: The vectorizer converts flat artwork to SVG with a colour count you choose, from 2 to 256.
What file do print-on-demand services want? A transparent PNG at roughly 300 DPI for the printed size, or an SVG for flat logo artwork. Check your printer's spec sheet, as maximum print areas differ.
Will the background removal leave a halo? BiRefNet produces soft-edged alpha rather than a hard cutout, which is what prevents the grey fringe you get from colour-key removal.
Can I use the results commercially? Yes. You own your output and there is no watermark on any plan. You are responsible for holding the rights to the source artwork.
What resolution can I reach? Up to 2K on the free plan and 4K on paid plans. Start from the largest source file you have — upscaling recovers detail, it does not invent it.