Resize Image to KB
Make a photo smaller than an exact file size, such as 20 KB, 50 KB or 100 KB, for online forms and uploads. Nothing is uploaded.
- Never uploaded
- Works offline
- Free, no sign-up
Processed on this device. Nothing is sent to a server.
How to use the Resize Image to KB
- Step 1Add a photoJPEG, PNG or WebP from your phone or computer.
- Step 2Pick the sizeChoose 20 KB, 50 KB, 100 KB or type any size.
- Step 3DownloadThe photo is saved as JPG, just under your limit.
Why forms ask for a size in KB
Job portals, exam registrations, government services and visa applications often limit uploads to a maximum file size, for example a photo under 50 KB or a signature under 20 KB. A phone photo is usually 2–5 MB, so it is rejected.
This tool finds the best quality that still fits under your limit. It first lowers the JPEG quality step by step, and only if that is not enough it also reduces the width and height. You see the final size before you download, and the photo never leaves your device.
Questions
Is my photo uploaded?
No. Resizing happens in your browser. That is important for ID photos and signatures, which you should not hand to unknown websites.
Is 1 KB 1000 or 1024 bytes?
This tool uses 1 KB = 1024 bytes, like Windows and most upload forms. A result “under 50 KB” is therefore under 51,200 bytes, and also under 50,000 bytes in most cases. If a form still rejects it, choose a slightly smaller size.
Will the photo look worse?
Only as much as needed. The tool picks the highest quality that fits. Very small limits (10–20 KB) need a smaller picture, so the tool also shrinks the dimensions; for a passport-style photo this is usually still fine.
Can I set the width and height too?
Yes. Set a maximum width or height and the tool resizes first, then compresses to your file-size limit.
What format is the result?
JPG, because almost every form accepts it and it compresses photos best. Transparent areas are filled with white.