Image size checker
See dimensions, format and file size before you upload.
About Image size checker
Before an upload is rejected for being too big or the wrong shape, check the facts. Drop an image to see its width and height, file size, format, aspect ratio and print DPI, plus quick links to resize or compress it.
- Aspect ratio tells you whether a photo will be cropped by Instagram or a profile picture frame.
- DPI only matters for printing; screens use pixels.
- The format shown is the real one, even if the file extension is wrong.
How to use it
- 1Drop an image or several.
- 2Read the dimensions, size, format and ratio.
- 3Jump to Resize or Compress if something needs changing.
Questions
- Why does the portal say my file is too big when it looks small?
- Portals usually limit file size in KB, not pixel size. Check the KB figure here and use Compress to exact KB.
- Can I check many files at once?
- Yes, drop a batch and you get a table.
- Is the image uploaded?
- No. Everything runs in your browser, so your photos never leave your device.