Many application portals reject photos larger than 100KB. This tool finds the highest quality that still fits under 100KB, and only reduces the image dimensions if quality alone isn't enough. Everything happens on your device.
How to use
- Choose or drop your photo. JPG, PNG and WebP are supported.
- ZIYNU automatically compresses it to 100KB or just below.
- Check the final size, dimensions and preview.
- Download the result. Your original file is not changed.
Example
A 3.2MB phone photo at 4032×3024 pixels usually won't reach 100KB by quality alone without visible blocky artefacts. The tool first lowers the JPG quality, and if the file is still too big it reduces the dimensions — for example to around 1800×1350 — so the face and text stay sharp at the size forms actually display.
Why forms ask for 100KB
Government, university and job portals store thousands of uploads, so they cap file size to keep storage and page loads manageable. The limit is about bytes, not pixels — a small file can still have plenty of resolution for an on-screen ID photo or signature.
How target-size compression works
JPG and WebP files get smaller as quality goes down. ZIYNU encodes your image several times, narrowing in on the highest quality setting that is still under the limit. If even a modest quality is too large, it shrinks the width and height step by step, which saves far more space than pushing quality into ugly territory.
PNG files are lossless and have no quality setting, so for a size target the result is saved as JPG (or WebP if you pick it). Transparent areas become white.
Keeping it looking good
Crop away empty background before compressing — fewer pixels means more quality per kilobyte. Well-lit photos compress better than dark, noisy ones, because camera noise is expensive to store.
Good to know
- If the tool can't reach the target without making the image unusably small, it tells you and shows the smallest acceptable result instead of pretending.
- Some portals also require exact pixel dimensions — use the Image Resizer or Passport Photo Maker first, then compress.