MerchForge

Yes. The design tools run entirely in your browser, with no watermarks and no install. You only enter your email once, when you download.

Remove backgrounds from t-shirt designs, vectorise designs to a clean SVG or PNG, convert designs to halftone, add distress textures (punched out or overlaid), AI-upscale up to 4×, resize to the exact Amazon Merch 4500×5400 pixel size (or any custom size), and compress the PNG for upload.

Letter holes are cleared automatically, with the Contiguous switch on or off. If colour is still left inside a letter, that area is almost certainly a slightly different shade to the outer background (a soft shadow, glow or gradient), so it isn't recognised as the same colour. Click the ✎ brush on the finished design, point at the leftover area and click to remove it. Flattening the design onto one solid background colour before uploading fixes it too. One exception: with Contiguous switched on, very large enclosed areas are kept on purpose.

No — the free tools process your designs on your own device, in the browser. The only exception is the optional AI file-naming feature, which sends a small downscaled copy to Anthropic to suggest a filename.

Yes — it was built for Amazon Merch sellers. One click exports print-ready 4500×5400 PNG files, upscaled to fill and compressed for upload.

PNG, JPG and WebP, at any size — oversized files are automatically scaled to a safe working size. You can batch as many designs as you like.