Compress PNG to 100 KB
Need a PNG under 100 KB? Drop it below and PhotoReducer finds the highest quality that fits the limit — automatically, and without uploading anything. PNG is a lossless format, so hitting a fixed size usually means converting to JPG or WebP — the tool does that for you and you pick the output format.
Drop images here or click to browse
JPG, PNG, WebP, AVIF · processed on your device, never uploaded
How the 100 KB limit is reached
PhotoReducer tries different quality levels and keeps the best one whose file stays under 100 KB. Most photos reach this limit through compression alone, keeping their original dimensions.
Who asks for 100 KB files?
A 50 KB cap appears in countless application forms, ID uploads and profile pictures. It is also a sweet spot for web thumbnails: small enough to load instantly, big enough to look clean on screen.
Frequently asked questions
Will the PNG still look good at 100 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?
To hit a fixed size the output is JPG by default (or WebP if you prefer). Transparency is flattened onto white for JPG.
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.