Inspect resolution honestly
- Choose a JPG, PNG, or WebP image.
- Compare embedded resolution metadata with the exact pixel dimensions.
- Use the 300/240/150 PPI print-size calculations to plan output.
Image DPI and Resolution Checker
Inspect embedded JPG or PNG resolution metadata and calculate real print sizes from exact pixel dimensions without uploading the photo.
DPI metadata is often misunderstood. A 3000 × 2000 photo does not become sharper because its tag says 300 DPI instead of 72 DPI; its printable resolution depends on how many pixels are spread across the chosen physical size.
How OpenFileTools processes it
Local processing, explicit choices.
OpenFileTools reads only bounded image headers for common resolution tags, decodes dimensions locally, and calculates physical print sizes without changing the source.
Questions, answered.
Is 72 DPI always low quality?
No. For digital images, pixel dimensions matter first. The effective PPI at a chosen print size determines print sampling density.
Can this change DPI?
This checker does not rewrite files. Use print-size planning rather than relying on metadata alone.
Related guide
Read the related guide