Resize image in KB
Reduce any photo to an exact file size in KB — 20 KB, 50 KB, 100 KB or any target you type. Free, instant and 100% in your browser.
Resize your image in 3 simple steps
Upload your photo
Drop a JPG or PNG — it stays on your device and is never uploaded.
Type the KB target
Enter the size your form needs, such as 20, 50 or 100 KB.
Download
The tool shrinks the file to your target and you save the result.
Why use this KB resizer
Exact KB target
Hit a strict limit like 20 or 50 KB so a form finally accepts your photo.
Best quality kept
It keeps the highest clarity that still fits inside your KB limit.
100% private
Everything runs in your browser; your photo is never uploaded to a server.
Instant
Reach your size in about a second — no waiting and no queue.
Works anywhere
Phone, tablet or desktop, in any modern browser.
Free & unlimited
No sign-up, no watermark — resize as many photos as you like.
Resize your photo to the exact KB you need
Online application portals almost always cap the file size in KB— a photo under 50 KB, a signature under 20 KB, and so on. A picture from your phone is far larger, so the form rejects it. This tool lets you type the exact KB target and it shrinks the file to fit, keeping the photo as sharp as possible.
Need exact pixel dimensions as well? Use the Image Resizer first, then resize in KB here. For a specific size there are one-click pages for 50 KB, 100 KB and more, and a Signature Resize tool for signatures. Everything runs in your browser, so your photo never leaves your device.