CheckImageDPI

Image DPI Checker

Private by design. Your image is checked entirely in this browser, so its pixels, filename, and metadata never leave your device.

Check JPEG, PNG, and WebP pixel dimensions, embedded DPI metadata, and source conflicts locally. Enter a print size to estimate effective DPI. Missing metadata stays Not specified—we never substitute 72 or 96 DPI or treat a metadata tag as proof of print quality.

Up to 25 MB and 50 megapixels. You can also paste an image.

After checking, use the converter to set any whole-number DPI from 1 to 12,000.

Read the result correctly

Three facts matter more than one DPI label.

1 · Pixels

Pixel width and height are the source of available detail. Changing a resolution tag does not add pixels, sharpen edges, or improve an image.

2 · Metadata sources

JPEG JFIF, JPEG Exif, PNG pHYs, PNG Exif, and supported WebP Exif can describe resolution. When sources disagree, the result is Conflict, not a hidden winner.

3 · Print size

Effective DPI is calculated from pixels and the requested physical size: pixel width ÷ print width in inches, and the same for height.

Not specified is a real result. If no usable resolution source exists, the checker leaves it unspecified rather than inserting a default. A 300 DPI tag can be useful for a workflow, but 300 DPI is not the same as Print Ready.

How to use the checker

  1. Choose, drop, or paste a JPEG, PNG, or WebP file.
  2. Review the pixel dimensions, resolution state, and listed metadata sources.
  3. Enter the physical print width and height to check effective DPI at that size.
  4. Open the converter from the result page to set any whole-number DPI from 1 to 12,000; changing metadata does not resample the image.

For a deeper explanation of pixels, metadata, and print calculations, read the image resolution guides. To set supported physical-resolution metadata to any whole-number DPI from 1 to 12,000, continue from your result to the image converter.

Frequently asked questions

What does an image DPI checker measure?

It reports an image's pixel dimensions and readable resolution metadata, then helps estimate effective DPI for the print size you enter. It does not judge image quality from a metadata label alone.

What does Not specified mean?

Not specified means the file has no usable resolution metadata. The checker does not substitute a default 72 or 96 DPI value.

Why can resolution metadata show a conflict?

A file can contain more than one resolution source, such as JPEG JFIF and Exif or PNG pHYs and Exif. If those sources disagree, the checker reports the conflict instead of silently choosing one.

Does 300 DPI mean that an image is Print Ready?

No. 300 DPI is a target metadata value, not a Print Ready verdict. Usable detail still depends on the image's pixel dimensions and the physical print size.

Are my images uploaded?

No. The checker reads and processes supported files locally in your browser. It does not need an image upload to report the result.