50 KB is a limit many online forms use for photographs, and for ID cards or certificates uploaded as pictures. It is enough for a clear face or a readable card, as long as the picture isn't much bigger than it needs to be. This page opens Compress image with 50 KB already set.
Photos of ID cards and certificates are exactly what you shouldn't hand to an unknown website. Here they are compressed by your own browser and never leave your device.
How to compress an image to 50 KB
- If a document photo shows a lot of table or floor around it, crop it on your phone first, so the 50 KB is spent on the part that matters.
- Add one or more pictures here.
- Leave the target at 50 KB, and Save as on Same as original unless the form asks for JPEG.
- Select "Compress image", then check each picture's new size and quality in the notes.
- Download the pictures one by one, or all together as a ZIP.
What 50 KB is enough for
- A passport-style photo: usually comfortable, with room to keep the quality high.
- A photo of an ID card or a small certificate: usually readable, if it was taken flat, in good light and filling most of the frame.
- A full A4 page photographed with a phone: tight. Small print may blur, so check it at full size before you upload.
JPEG, WebP or PNG?
Most forms want JPG or JPEG. WebP fits a little more quality into 50 KB, but only choose it if the form accepts it. PNG keeps every pixel exactly, so the only way it gets under 50 KB is by losing pixels. For photos and screenshots, choose JPEG under Save as; any transparent areas will turn white.
Frequently asked questions
Will the photo look worse at 50 KB?
A little, and more the further it has to shrink. The tool keeps the highest quality that fits in 50 KB and lowers the pixel size only when it must, and the note tells you which happened.
My photo is already under 50 KB. What happens to it?
If it is already in the format you asked for, it is kept exactly as it was, not saved again, so it loses nothing.
Can I compress screenshots to 50 KB?
Yes. Screenshots are often PNG files, which shrink much further as JPEG or WebP, so choose one of those under Save as.
Is it safe to compress a photo of my ID card here?
Yes. The picture is processed by your browser on your device and is never uploaded, stored or seen by anyone else.
What if the form also gives a size in pixels?
Use Resize image, which sets an exact width and height and a KB limit together. Check your form's notification for the exact size.