Guide · Device workflow
How to Check Image DPI on Devices
On a phone, tablet, or desktop, open the checker in a browser and choose, drop, or paste the image. The tool reads supported metadata locally and reports resolution, pixels, and format in one place. Device photo apps may show dimensions but omit DPI, convert units, or expose only a subset of metadata.
Private browser tool
Check from this device
No upload
Your image stays in your browser. Image bytes, filename, and Exif metadata are not uploaded. Privacy details.
Up to 25 MB and 50 megapixels. You can also paste an image.
Choose an image to see its pixel dimensions and embedded resolution.
File inspection
Image facts
Resolution sources in this file
Print reality check
Will it work at your print size?
Pixel dimensions—not a metadata label—determine usable print detail.
Choose an image, then check a print size.
Why device interfaces can be incomplete
Photo galleries and file managers often prioritize capture date, dimensions, and file size. Some hide resolution fields; others show a value without explaining whether it is DPI, image PPI, or a display setting. That makes a direct file inspection more reliable than guessing from an app screen.
A simple device workflow
- Open CheckImageDPI in the device browser.
- Choose the image from Files, Photos, or the share sheet, or paste it where supported.
- Read the embedded resolution together with pixel dimensions and the intended output size.
Keep the privacy boundary clear
The tool is designed to process the selected bytes in your browser. A “Not specified” result means the file did not expose a reliable resolution field; it does not mean the image is unusable. For a 300 DPI delivery requirement, check the 300 DPI guide and confirm the receiving system’s actual specification.