Print Size and DPI Checker for Images

Print size and dpi checker

Find out whether your image is big enough to print at the size you want, see the biggest size it can hold, and save it resized. Free, and nothing is uploaded.

Drop an image to check its print size

PNG, JPG or WEBP. Drop several at once to resize a batch.

Choose image

Stays on this computer · no signup · no watermark

The question behind every blurry sticker

Nothing about a file tells you it will print well: it is pixels divided by inches, and that only exists once you decide how big the finished thing is. This tool does that arithmetic, shows the verdict at the size you have in mind, and lists the common sizes so you can see where the image stops holding up.

It reads the real pixel dimensions, not a scaled copy, so the numbers are the file's own.

Before you print

Check at the finished size, not the size on screen. A design that looks sharp in a browser tab can be soft at four inches.
Print at 100%. "Fit to page" and "shrink to fit" rescale the artwork, which changes the resolution and, for print-then-cut, stops the cut lining up.
For anything that gets cut, a vector has no resolution to run out of. Convert it once and the size question goes away.

Questions

What is dpi, really?

Dots per inch: how many pixels land in each printed inch. It is not stored in your image in any meaningful way — it comes from the size you print at. A 900-pixel-wide image is 300 dpi at three inches and 90 dpi at ten.

Is 300 dpi a rule?

It is a rule of thumb for something held in the hand, and this tool labels it that way. Signs and posters read from a step back are fine much lower. What matters is how close the viewer gets, which is why the table shows several sizes rather than one pass-or-fail answer.

Can I just enlarge the file to reach 300 dpi?

Enlarging stretches the pixels you already have; it never adds detail that was not photographed or drawn. The tool tells you when the size you want would mean enlarging, and by how much. The real fixes are to export the artwork bigger from wherever it came from, or to convert it to a vector, which has no resolution at all.

Does the downloaded PNG remember the size?

Yes. The resolution is written into the file, so print software places it at the right physical size instead of guessing. Print at 100% and switch off "fit to page" or the size changes again.