Free resolution check

DPI Checker

Paste an image and the size you want to print it at. This tells you whether you've got enough resolution to come out sharp — for sublimation, DTF, or print-on-demand.

Drop an image here, or click to browse

JPG, PNG, or WebP — nothing is uploaded, it all stays in your browser

Image resolution

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Print width

Print height

Unit

Lock to image's aspect ratio

What are you printing for?

Sublimation

DTF transfer

Print-on-demand

Large format / sign

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Effective DPI

Upload an image and enter a print size to see your DPI.

Sublimation transfers show every pixel up close — aim for 300 DPI. Anything under 150 DPI will look soft on a mug or tumbler wrap.

DPI is calculated from your image's pixel dimensions divided by your print size — nothing is uploaded or stored.