Photo Size Reducer

Compress Image to 40 KB

Need a photo under 40 KB? Drop it in below and we shrink it to fit, keeping as much quality as possible. A 40 KB limit is common for government and job application forms, exam registrations and profile pictures.

Drop a photo here or tap to choose

JPG, PNG or WebP. Stays on your device.

Tips for best results

  • Crop out empty background before compressing. Less area means less data, so you keep more detail at the same file size.
  • The tool searches for the highest quality that still fits under 40 KB. If the photo is very large, it also scales the dimensions down automatically.
  • Everything runs on your device. Your photo is not uploaded to any server.
  • The output is a JPG. If your form asks for PNG or PDF, convert the compressed JPG afterwards.

Need to compress many photos? Use the free app.

Photo Size Reducer for Android compresses photos to your exact target, works offline, and keeps everything on your phone.

Get it on Google Play

Frequently asked questions

How do I reduce a photo to 40 KB?

Select or drop your image, keep the target at 40 KB and press Compress. Download the result when it is ready.

Will compressing to 40 KB make my photo blurry?

It depends on the starting size. Large phone photos usually lose very little visible quality. For very small targets, cropping the photo first helps a lot.

Is it safe? Do you keep my photos?

No. Compression happens inside your browser, so the image never leaves your device.

Can I do this on my phone?

Yes, this page works in any mobile browser. For batch compression and offline use, get the free Android app.

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