How to Compress an Image to 100KB (or Any Exact Size)

Many forms and websites cap uploads at 100KB, 200KB or 1MB. Here is the fastest way to hit an exact file size without installing anything — and without uploading your photo to a stranger's server.

Step by step

1. Open the Compress Image tool and drop your photo in.
2. Switch the mode to Target size and type your limit, e.g. 100 KB.
3. FileZap automatically finds the highest quality that fits under your target.
4. Download the result — it already meets the size cap.

FAQ

Why compress to an exact size?

Government portals, job applications and school systems often reject images over a fixed KB limit. Target-size compression guarantees your file is accepted on the first try.

Does compressing lower quality?

A little, but target-size mode keeps the maximum possible quality that still fits your limit, so the drop is as small as physically possible.

Is my photo uploaded anywhere?

No. FileZap compresses inside your browser. Your image never leaves your device.

Try the tool →