Reduce image size to 100 KB
Application portals, exam registrations and profile pages often reject photos over 100 KB. Drop your picture here and get a JPG that is guaranteed to be 100 KB or less, at the best quality that fits. Your photo stays on your device.
Drop images here
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Files are processed on your device. Nothing is uploaded.
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How to reduce an image to 100 KB
- 1
Drop your photo here, paste it, or click “Choose files” — JPG, PNG, HEIC, WebP and more work.
- 2
The target is preset to 100 KB. Change it if your form asks for a different limit.
- 3
Download the JPG and upload it to the form or website.
Getting a photo under 100 KB
A modern phone photo is typically 2–5 MB, so getting to 100 KB means shrinking it 20–50 times. Most of that comes from stronger JPG compression; for very detailed photos the pixel dimensions are reduced as well.
The tool encodes the photo several times, homing in on the highest JPG quality that stays within 100 KB. If quality alone is not enough, it scales the photo down in small steps. The result is always a JPG, the format that upload forms accept almost universally.
Private by design
- Processed on your device — files are never uploaded.
- Works offline once the page has loaded.
- No limits on file count or size beyond what your device can handle.
Frequently asked questions
Is the output guaranteed to be 100 KB or less?
Yes. Only results at or below the limit are accepted. 100 KB here is 102,400 bytes or fewer, so the file also passes forms that use 100,000 bytes as the limit.
Will the photo dimensions change?
Often not. Lowering JPG quality is tried first. Large, detailed photos may additionally be scaled down; a passport-style photo usually keeps more than enough resolution.
Can I use an iPhone HEIC photo?
Yes. HEIC, PNG, WebP, AVIF, GIF and BMP are all accepted and the result is saved as a JPG.
My form needs 20 KB or 200 KB. Does this still work?
Yes. Type any size into the target field or use the preset buttons, and convert again.
Is it safe to use for ID or application photos?
Yes. The photo is processed entirely in your browser and is never uploaded, so nobody else gets a copy.