Print File Checker

Drop an artwork file and get its true DPI at your print size, its transparency, and whether it will reprint.

Drop your artwork Nothing uploaded

Drop an image here

The file never leaves your browser

It is read on this device with FileReader and a canvas. Nothing is uploaded, nothing is stored, and no copy is kept anywhere.

Print size

12 × 16 in is the usual adult front-of-shirt area. Drop it to 3.5 × 3.5 in for a left chest, 3 × 3 in for a sticker, or 18 × 24 in for a poster.

File report No file yet

Drop a PNG or a JPEG on the left. This side fills in with its pixel size, aspect ratio, weight, transparency and the DPI it would really print at.

Everything runs in your browser. Nothing is uploaded.

Most reprints are caused by one of three things: not enough pixels for the size, a flattened background where transparency was needed, or the wrong file type.

This checks all three. The file never leaves your browser — it is read locally with a canvas and nothing is uploaded.

How to read this

DPI is not a property of your file. It is pixels divided by print inches. A 3600 x 4800 px file is 300 DPI at 12 x 16 in and 150 DPI at 24 x 32 in.

For direct-to-garment, 150 DPI at the finished size is the honest floor; the fabric cannot hold more detail than that. 300 DPI is the target for paper, stickers and posters.

Apparel prints need a real alpha channel. A JPEG cannot have one, which is why a white box appears around the design.

Questions

Is 300 DPI always better?
No. On a shirt it mostly makes the file larger. Aim for 150 DPI at the finished size and spend the effort on clean edges instead.
Does anything get uploaded?
No. The image is read in your browser with FileReader and a canvas. It is never sent to a server.

Tools that pair with this

Podezzy is free to use. We may earn a commission from some of the tools we link to. It never changes what we recommend, and it never changes what the data says.

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