POD Prep Guide
From ChatGPT image to Printify product
What to check before you upload — in plain language.
Effective DPI calculator
300 effective DPI
Meets a common 300 DPI target. For 300 DPI at 15 in you need 4500 px. Requirements vary by product and provider.
ChatGPT images aren't automatically print-ready
Typing "300 DPI" or "transparent" in a prompt is a request, not a guarantee. Always check the downloaded file yourself before uploading.
Pixels matter more than the DPI label
Effective DPI = image width in pixels ÷ print width in inches. A file tagged 300 DPI that's only 1024 px wide will still look soft printed 12 inches wide.
Check transparency
Open the file and look for a checkerboard behind the art. White or colored backgrounds will print as a box on your shirt. Use a background remover if needed and inspect the edges for halos.
Upscaling
If your image is too small, a quality AI upscaler can help. Afterwards, zoom in: look for warped letters, mushy edges, or invented details.
Inspect every letter
AI image tools often misspell or invent letters. Read your text slowly at 100% zoom. Regenerate rather than ship a typo.
Use your provider's template
Each Printify product and print provider has its own print area and recommended pixel size. Open the product in Printify, check the provider's requirements, and use their preview before publishing.
Order a sample
Colors on screen and on fabric differ. A sample is the best quality check you can do.