Image File Size Checker

See the exact file size of one or more images in bytes, kilobytes and megabytes.

How to use the Image File Size Checker

  1. Add one or more image files.
  2. Press Analyse.
  3. Read the results listed under each file name.

How this tool reads your file

File sizes are read from the selected files themselves, so the numbers match exactly what your operating system reports.

Why file size matters

Images are usually the largest part of a web page. A page with three uncompressed photographs can easily reach several megabytes, which is slow on mobile data and counts against Core Web Vitals. As a rough guide, a full-width hero image should stay under about 200 KB and a thumbnail under 30 KB. If yours are larger, compress or resize them.

Frequently asked questions

Can I check several files at once?
Yes. Add as many images as you like and each one is listed with its own result.
Is anything changed in my file?
No. The file is only read and reported on; no new file is written unless you use one of the conversion tools.

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