Compress to size
Compress an image to 5KB
Hit a brutal 5KB cap — the smallest common upload limit — right in your browser.
How to compress image to 5kb
Add your image
Drag in or tap to choose a JPG, PNG or WebP. Batches work too.
Confirm 5KB
The target is preset to 5KB — change it if your form needs a different cap.
Download
We keep the highest quality that still fits and hand it back instantly.
About this tool
5KB is about as tight as upload limits get — closer to a favicon than a photo. A handful of legacy government and exam portals still enforce it for thumbnail-sized ID photos. This tool pushes quality and dimensions down together until the file actually fits, rather than giving up partway.
At this budget, expect noticeable softening and a smaller frame than the original — that trade-off is unavoidable at 5KB. For a small ID thumbnail it still reads fine; for a detailed photo you'll see it. If your form allows even 10–15KB, you'll get a visibly better result there.
Questions
Does my image get uploaded?
No. Everything runs locally in your browser — the file never leaves your device.
Can I target a size other than 5KB?
Yes, change the target field to any KB value your form requires.
Why does 5KB look so much worse than 20KB or 50KB?
File size drops roughly with the square of the dimensions plus quality loss, so going from 50KB to 5KB is a much bigger cut than it sounds — both quality and pixel size usually have to shrink.
Which formats are supported?
JPG, PNG and WebP — the output keeps your original format. Note that PNG is lossless, so very tight targets rely on downscaling rather than quality reduction.