ONE SMALL TASK, DONE.
Image Print Size & DPI Checker
See how large an image prints at 300 DPI, check its sharpness on A4 or photo paper, and change the DPI tag without resampling.
Runs on your deviceHow to use
- Choose a JPEG, PNG or WebP image.
- Pick the paper and whether to fit or fill it.
- Check the effective DPI; save a copy with a new DPI tag if needed.
Good to know
Effective DPI compares the image pixels with the paper size you choose. 300 DPI is sharp for close viewing; posters seen from a distance need less.
Changing the DPI value rewrites only the resolution tag in JPEG and PNG files. The pixels and quality stay exactly the same.
This tool runs in your browser. Files you choose, microphone audio and your input are not sent to our server, and no result is stored. Advertising uses external services. Social and coffee links open external websites.
Questions
A print shop wants 350 DPI. Does changing the tag help?
Only if the pixels are already enough for the print size. The tag sets the intended size; it does not add detail.
How many pixels does A4 need at 300 DPI?
About 2480 × 3508 pixels.
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