Image DPI Checker
Check an image's pixel dimensions, file format, file size, and its actual stored DPI/PPI resolution — read from the file's own metadata, never estimated.
Your files are processed locally in your browser and are not uploaded to our servers.
How to use image dpi checker
- 1Upload a JPG, PNG or WebP image.
- 2View its pixel dimensions, format and file size.
- 3Check the DPI/PPI reading, sourced from the file's own metadata.
- 4If no resolution tag exists, the tool says so rather than guessing one.
About this tool
DPI (dots per inch) or PPI (pixels per inch) describes how densely an image's pixels are meant to be printed — it's a property stored inside the file, separate from its pixel dimensions, and it's often what print shops or templates ask for.
This tool reads that resolution value directly from the file: the JFIF or EXIF segment of a JPEG, or the pHYs chunk of a PNG. WebP has no standard field for storing physical resolution, so a DPI value is never available for WebP files.
Crucially, DPI cannot be reliably derived from pixel width and height alone — the same 3000×2000 image could be tagged at 72 DPI or 300 DPI depending on how it was saved. When no resolution tag is present, this tool reports "Not specified" instead of inventing a number.
Frequently asked questions
This means the file doesn't contain a resolution tag — common for images exported from web tools, screenshots, or WebP files, which have no standard DPI field at all. It's an honest "unknown," not a default value.