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Compress image to 40KB

Make any photo just under 40 KB - with the best quality that fits.

or drop files here

Compress image to

10 KB20 KB30 KB40 KB50 KB100 KB150 KB200 KB300 KB500 KB

How to compress an image to 40 KB

  1. Add your photoJPG, PNG, WEBP or iPhone HEIC - one photo or many.
  2. The size is set to 40 KBChange the number if your form asks for a different size.
  3. DownloadEvery photo comes back just under 40 KB, ready to upload.

Made for

  • Photos and signatures for exam, job and government forms (20 KB, 50 KB, 100 KB)
  • Profile pictures and banners in exact sizes
  • Product photos for online shops
  • Making pictures smaller for email

About this tool

Many online forms and websites refuse a photo bigger than a set size. 40 KB is used for form photos where 50 KB is the limit and you want to stay safely under it. This tool saves your photo as a JPG at the highest quality that still fits under 40 KB - it tries one quality after another until the file fits - and makes the picture a few pixels smaller only when that is the only way. The result is checked before you download it, so it is never over the limit.

Questions

How do I compress an image to 40 KB?

Add the photo - the size is already set to 40 KB - and press Download. The tool finds the best quality that fits under 40 KB.

Will the photo still look good at 40 KB?

Yes. At 40 KB most phone photos still look sharp on screen; the tool keeps the most quality that fits.

Can I compress many photos to 40 KB at once?

Yes - add them all; they come back together in one ZIP.

My form also asks for exact pixels - what do I do?

Choose "Pixels", type the width and height and download; then add that picture again and choose "Size in KB".

Are my photos uploaded?

No. Everything happens in your browser, on your own device - your photos never leave it.

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