Compress image to 50 KB
Get any photo under 50 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
A common limit for photos and signatures on application and registration forms. This tool finds the best quality that fits under 50 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 50 KB
The result is never over the limit: it's at or under 50,000 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 50 KB looks like
- A 12-megapixel phone-size photo (4.2 MB) became 49.6 KB (49,578 bytes), 577 × 433 pixels.
- A 2400 × 957 photo (1.1 MB) became 49.5 KB (49,526 bytes), 846 × 337 pixels.
- Both are detailed landscapes, the hardest kind to shrink. Portraits, documents and plain backgrounds keep more pixels at the same size.
Tips for 50 KB
- Crop first: a tight photo keeps more detail where it counts.
- If the form accepts WebP, choose it: at the same size it usually keeps more detail than JPG.
- Check the form's other rules too, such as exact pixel dimensions, which a size limit doesn't cover.
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 50 KB?
See the measurements above: at 50 KB the 12-megapixel test photo kept 577 × 433 pixels. Download it and zoom in before you submit.
Is 50 KB counted as 50,000 or 51,200 bytes?
Sites differ. The tool aims under the smaller figure, 50,000 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.