Frequently asked questions
How do I compress a JPG to 100 KB?
Drop your JPG in β the 100 KB target is set β and the tool finds the best JPEG quality that stays under 100 KB. The output stays a JPG.
Does it reduce quality?
Only as much as needed to hit the target. It keeps the highest quality that fits and shows a preview before you download.
Is my JPG uploaded?
No β compression runs in your browser and the file never leaves your device.
Getting a JPG under 100 KB
The 100 KB JPG limit is common on job portals, admission forms and email attachments that want a JPG under 100 KB. Set it above and download a JPG that fits.
What to expect
100 KB gives a genuinely sharp JPG at full dimensions β the most common all-purpose photo limit.
Tip
Export from the original camera file rather than a messaging-app copy so you are not stacking compression twice. You can also use the image compressor for PNG and WebP.
What happens behind the scenes
The tool runs a rapid binary search over quality levels, measuring the true output size at each step until it lands on the highest quality that still fits under 100 KB. You get a preview before downloading, so there are no surprises. If the image is very large for a tight target, it also gently reduces the pixel dimensions, because a slightly smaller but clean image always looks better than a full-size one riddled with compression artefacts.
Why an exact 100 KB target matters
Upload forms reject anything over their stated limit, so "roughly smaller" is not good enough β you need to land under 100 KB on the first attempt. Aiming for the exact size gives you the best-looking image that still passes, instead of over-compressing out of caution and ending up with something needlessly blurry.
Need a different JPG size?
Every limit below uses the same tool with a different target, so you can go straight to the one your form or inbox actually asks for. If you only need a smaller file size in general and no exact number, pick the next limit up from where you are now and keep more quality.
Not sure which limit you need, or want to type an exact number of your own? The image compressor takes any target you give it.