Compress image to 40 KB
Need a image under 40 KB? Drop it below and PhotoReducer finds the highest quality that fits the limit — automatically, and without uploading anything.
Drop images here or click to browse
JPG, PNG, WebP, AVIF, HEIC, GIF, BMP · processed on your device, never uploaded
How the 40 KB limit is reached
PhotoReducer tries different quality levels and keeps the best one whose file stays under 40 KB. For strict limits like this one, large photos are also scaled down automatically until they fit.
Who asks for 40 KB files?
When a bank or telecom form asks you to attach a scanned ID card or utility bill, 40 KB is usually enough to keep the printed text sharp while staying under the "file too large" error. It also works well for scanned bank statements uploaded page by page.
Frequently asked questions
Will the image still look good at 40 KB?
For screen use the result looks good: the tool picks the highest quality that fits, and only reduces dimensions if compression alone is not enough.
Does it change the format of my file?
The output is JPG by default — the format virtually every form accepts — and you can switch to WebP. JPG, PNG, WebP and AVIF are accepted as input.
Is my photo uploaded anywhere?
No. Everything runs locally in your browser with WebAssembly — your image never leaves your device, which makes this safe even for ID photos and documents.