How to compress a JPG to 100 KB
- Drag your JPG into the box above or tap “Select images”.
- Leave the 100 KB target selected. If the form also asks for exact dimensions, enter the width in “Max width / height”.
- Wait a few seconds, check the before/after comparison and download the result.
Why dimensions matter at 100 KB
A photo taken with a modern phone has around 12 megapixels and usually weighs 2–5 MB. Squeezing all those pixels into 100 KB would require such a low quality that the picture would look blocky.
That is why, when it is needed, the tool also scales the photo down — typically to somewhere between 1000 and 1600 pixels wide. On a screen, and for an ID-style photo, that is still sharp, and quality stays high. If you prefer to keep the original dimensions, untick “Reduce dimensions if needed”.
Tips for a sharper 100 KB photo
- Crop away unnecessary background before compressing: fewer pixels leave more room for detail.
- Plain, evenly lit backgrounds compress much better than busy ones.
- Keep the JPG format for photos — a PNG photo is usually several times heavier.
- If the website accepts WebP, it typically produces files 25–35% smaller than JPG at a similar quality.
What if 100 KB cannot be reached?
With resizing allowed, almost any photo can get under 100 KB. If you turn resizing off and the image is very large or detailed, the limit may be impossible at an acceptable quality. In that case the tool tells you clearly and gives you the closest result instead of pretending it worked.