Compress image to 20 KB
Get any photo under 20 KB at the best quality that fits. 100% private: it never leaves your device.
- Processed on your device
- No upload, no sign-up
About this tool
Limits this small usually come with application forms, for passport-style photos and scanned signatures. This tool finds the best quality that fits under 20 KB, and makes the image smaller in pixels only when quality alone isn't enough. It runs in your browser, so the photo is never uploaded anywhere.
Always at or under 20 KB
The result is never over the limit: it's at or under 20,000 bytes, or the tool tells you it can't get that small. Counting a KB as 1,000 bytes keeps it under the limit on sites that count 1,024 too.
What 20 KB looks like
- A 12-megapixel phone-size photo (4.2 MB) became 19.8 KB (19,829 bytes), 371 × 278 pixels.
- A 2400 × 957 photo (1.1 MB) became 19.9 KB (19,850 bytes), 523 × 209 pixels.
- Both are detailed landscapes, the hardest kind to shrink. Portraits, documents and plain backgrounds keep more pixels at the same size.
Tips for 20 KB
- Crop to what matters (a face, a signature) before you start: every pixel you keep has to share 20 KB.
- Plain, evenly lit backgrounds compress far better than busy ones.
- Expect some softness at this size. Zoom in on the result before you submit it.
100% private
Most image compressors upload your photo to their servers. This one works inside your browser tab: the photo, which is often an ID photo or a signature, is never uploaded to Krisox or anyone else. Location data (EXIF) is removed along the way.
Questions
Will my photo be clear at 20 KB?
See the measurements above: at 20 KB the 12-megapixel test photo kept 371 × 278 pixels. Download it and zoom in before you submit.
Is 20 KB counted as 20,000 or 20,480 bytes?
Sites differ. The tool aims under the smaller figure, 20,000 bytes, so the result fits either way.
Which formats can I use?
JPG, PNG, WebP and iPhone HEIC photos. The result is a JPG (accepted almost everywhere) or a WebP.