Free tools › Images
Compress JPEG to 100 KB
The size exam and recruitment portals ask for. Nothing is uploaded.
More free conversions, where you upload. The Fylane extension does the same work inside any upload form, on its own free share every day.Add to Chrome
How to convert Compress JPEG to 100 KB
- Drop the photo, or choose it from your device.
- Press Compress — the target is already 100 KB.
- Download the file, now under the limit.
What happens to your file
A hundred kilobytes is a small budget for a photograph, and it is what exam boards, recruitment portals and older government forms tend to demand. This page is that number, already chosen.
A JPG, PNG or WebP never leaves your device: the browser decodes it and a bounded search lowers the encoder quality — at most six probes — until the file fits.
Only if the quality floor is not enough are the dimensions stepped down, and the result says so. A 4,000-pixel-wide photo simply cannot hold 4,000 pixels inside 100 KB.
HEIC, TIFF and AVIF take the cloud path on this same page, through the same search, and are deleted on schedule.
Questions
Will a photo still look right at 100 KB?
At the sizes these forms want — a passport-style headshot, a signature, a document scan — yes. A full-width landscape photograph at 100 KB will show compression in the sky and along edges, because there is no honest way around the arithmetic.
Why does my form want 100 KB?
Usually because it was written when storage was dear and never revisited. Indian and other South Asian examination portals are the most common source of the number.
Is it really not uploaded?
For JPG, PNG and WebP, correct — the page works with your network unplugged. The privacy sweep in our test suite asserts that no host is contacted.
What if 100 KB is not possible?
The page tells you, and hands you the smallest honest version rather than mush. Try cropping the photo first: fewer pixels is the one change that always helps.
Do it once, not on every form
A form that wants a square JPEG under 240 KB says so on the page. The Fylane extension reads that, fits your photo to it, and puts it in the field — without you working out what 240 KB looks like.
And it keeps the result. The next application that asks for a résumé, a cover letter and a photo fills all three from one tap, each one refitted to what that site accepts.
Your files stay in the browser, encrypted, on your machine. Nothing is uploaded to keep them and nothing is sent anywhere to fill a form.
Related tools
Do this in code
curl -X POST https://api.fylane.dev/v1/jobs \
-H "Authorization: Bearer $FYLANE_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"file_id": "<file id>",
"operation": "image.convert",
"options": {
"target_bytes": 102400
}
}'The same operation, image.convert — Re-encode to WebP, JPEG, PNG or AVIF at your quality. Upload first with the quickstart; every option is on the operations page. 500 free credits a month, then $5 per thousand.