Compress Image Under 100KB

How to compress an image to under 100KB

1. 1Click Browse files or drag your image onto the upload area above.
2. 2The tool is already set to File Size mode with a 100KB target — no changes needed.
3. 3Select JPG or WebP as the output format for the best compression results.
4. 4Click Resize to Target Size and download your compressed image.

Frequently asked questions

Why do forms ask for images under 100KB?

Many online forms — job applications, government portals, university admissions, and ID photo uploads — cap file size at 100KB to keep uploads fast and storage manageable.

How much quality will I lose compressing to 100KB?

For most photos under 2MB, compression to 100KB is nearly imperceptible at normal viewing sizes. For very high-resolution originals, Resizeify may also reduce dimensions slightly to reach the target.

Can I compress a PNG to 100KB?

PNG uses lossless compression, so it's harder to reach small targets. For best results, switch the output format to JPG or WebP in the format selector — both support quality-based compression and will reach 100KB much more easily.

Is there a limit on how large my original image can be?

Resizeify supports input images up to 50MB. For very large files the browser may take a few seconds to process, but there's no hard cap on original dimensions.

Does compressing to 100KB change the image dimensions?

Resizeify first tries to reach 100KB by reducing quality alone. Only if that's not enough will it scale down dimensions — and only as little as needed to hit the target.