How to use the Image Dimensions & DPI Checker
- Drop one or more images.
- Read the dimensions, aspect ratio, DPI and file size for each.
- Check the print sizes to see if a photo is sharp enough to print.
What does this tool do?
DPI (dots per inch) is only a label stored in the file: the number of pixels decides how sharp a print can be. For a crisp photo print you want about 300 pixels per inch, so a 3000 × 2000 px image prints well at 10 × 6.7 inches.
DPI is read from the PNG pHYs chunk or the JPEG JFIF/EXIF header. Many web images have none, in which case apps assume 72 or 96. Your images are processed on your own device and never uploaded.
Why use it?
- Bulk checking.
- Reads stored DPI.
- Print size at 300 DPI.
Privacy
Your files are processed entirely in your browser using built-in web technologies. They are not uploaded to our servers, and closing the page clears them from memory. There's no account to create and nothing to install.
Last reviewed by the M2Toolkit team.