Creative · official-source review · reviewed 2026-10-10
New designers print posters from web-resolution images and end up with blurry results.
Check whether an image's pixel dimensions meet 300 DPI for a target print size.
Designers and photographers preparing files for print.
Use the source document or official route that applies to your situation. This guide does not contact another person or verify external information.
Find the pixel width and height of your image file.
Choose the width and height you want to print.
Divide pixels by inches to get DPI.
Print smaller if DPI is below 200 for most print work, 300 for critical sharpness.
A 2400×3600 pixel image printed at 24×36 inches is only 100 DPI, too low for sharp print; print it at 8×12 inches for 300 DPI.
Use your own source and details. The example is not a record about a real person or organization.
International Organization for Standardization (ISO) / printing industry standards · reviewed 2026-10-10
What this source supports: 300 pixels per inch is standard for high-quality print viewing at close range; large posters viewed from further away can use lower PPI.
Source limit: Viewing distance, printer, and paper stock change acceptable resolution.
These sources support the statements above. They do not show that every person needs this guide. They do not show a specific result.
This App checks pixel dimensions against DPI. It does not edit the image or upsample it.
Viewing distance, printer, and paper stock change acceptable resolution.
Use current instructions from the responsible organization. This guide is a planning aid, not an official decision or a substitute for qualified advice.
Check whether an image's pixels are enough for a target print size at a standard DPI.
This computes DPI. It does not edit or upsample your image.
You enter every number yourself. The sources support the method and the limits. They do not produce a result for your specific case. Keep the original documents next to the sheet you build.
The App computes the worked example with your own numbers, in your browser.
APP 1
Check whether an image's pixels are enough for a target print size at a standard DPI.
Free · no account · no upload
Open Print Resolution DPI CheckerThe App runs in this browser. It does not send or save entries. Copy, download, or print only when you choose.
This guide uses short, direct instructions as an ASD-STE100-style writing target. It is not a formal certification.
Companion App: Print Resolution DPI Checker. It runs in this browser and does not upload your entries.
This guide is edited for clarity and checked against the sources it links. It is not a substitute for official instructions or qualified advice. A linked source does not show that every person needs this guide.