Upload a PNG to confirm it has a real transparent background before you put it on a product. Runs in your browser.
On a product, a transparent background lets the shirt or mug color show through your design. A JPG can never be transparent, and a PNG that looks white on screen often has a solid white box that prints as an ugly rectangle. This tool draws your file on a checkerboard and counts transparent pixels so you know for sure before you upload to a supplier. If it comes back solid, you need a real cutout, not just a white background.
It reads your image's alpha channel in the browser and counts pixels that are not fully opaque. Nothing is uploaded to a server.
White is a color, not transparency. A design can look fine on a white page but print a white box on a colored product. You need a true cutout (alpha) background.
Yes. LzyPOD exports print-ready transparent PNGs, so your designs drop straight onto any product color.