WeVividWeVividCheck an image's DPI and print dimensions.
Upload a photo to check its DPI.
Many images — especially ones exported from phones or web tools — don't include DPI metadata at all, since DPI only matters for print, not for on-screen display. Screens default to treating images as 72 or 96 DPI regardless of what's stored.
This reads the JFIF density fields directly from a JPEG's header, or the pHYs chunk from a PNG's structure — both are documented parts of the file format, read locally in your browser.
No — this is a read-only checker. To change an image's print size, use an image editing tool that lets you set the DPI metadata explicitly.