Compress Image to 100KB
Short answer
Compress an image to under 100KB below — set the target and we search for the best quality that still fits. Runs in your browser; nothing is uploaded.
Drop an image here
or drop your file here.
Nothing is uploaded — it stays on your device.
Runs in your browser — your file is never uploaded.
Add an image, then press "Compress image".
Upload forms love round numbers. Government portals, job applications, and exam registrations routinely cap a photo at 100KB, and rejecting anything larger without telling you how to fix it. That is a target-size problem, not a quality problem — you do not care what quality value gets you there, only that the file comes in under the line.
Switch to target-size mode, type 100, and the tool encodes the image at several different quality levels and keeps the best-looking one that fits. It is a binary search, so it converges in a handful of attempts rather than grinding down one percent at a time.
If 100KB is genuinely impossible for your image — a 12-megapixel photo has a floor — you get the smallest usable version along with a clear message that the target was not reached, rather than a silently mangled file. In that case, resize the image to smaller dimensions first and then compress; fewer pixels is the lever that actually moves the floor.
How to compress an image to 100KB
- 1Add the image. Drop it in — it stays on your device.
- 2Choose target size. Pick 'Compress to a target file size' and enter 100.
- 3Compress. We find the best quality that fits under 100KB.
- 4Download. Check the before and after size, then save.
Frequently asked questions
What if 100KB cannot be reached?+
You get the smallest usable version plus a message saying the target was missed. Resize the image to smaller pixel dimensions first, then compress again — that lowers the floor.
Will it still look acceptable at 100KB?+
For a normal web-sized photo, yes. For a very large photo squeezed hard, expect visible softening — the preview shows you exactly what you are getting before you download.