Compress Image to KB — Free Online
That form says 'photo must be under 100 KB'? This tool hunts automatically — testing quality and size combinations — until your image fits under the exact limit you choose, at the best quality allowed.
Drop images to shrink to an exact size
For job applications, university portals & forms with strict KB limits
Tip: you can also press Ctrl + V to paste
100% private — processed on your deviceHow to use the Compress Image to KB
- 1
Add your image(s)
Drop the photo/scan the portal rejected as 'too large'. Bulk mode handles a whole set.
- 2
Pick your limit
Tap 20/50/100/200/500 KB or type a custom target. JPG is accepted almost everywhere.
- 3
Compress & upload
Every result shows its exact size and a green ≤ target tick. Download and submit that form with confidence.
Why use Tools Stars for this?
- Guaranteed targeting: smart binary search, not guess-and-check sliders
- Presets for common government & job portal limits
- Bulk mode with ZIP — compress full application sets in one go
- If a target is physically impossible, you get the smallest honest result, clearly marked
- Private on-device processing — ID photos and documents never upload
Frequently asked questions
Why do forms reject my photo even after normal compression?
Because most compressors shrink by a percentage, not to a limit. A '70% smaller' 3MB photo is still 900KB. This tool works backwards from the portal's exact KB ceiling instead.
Will a 20KB passport photo still look acceptable?
Yes at passport size (approx 413×531px), 20–50KB JPG looks perfectly fine for forms. Crop tightly first with our Passport Photo Maker for best results.
JPG, WebP or PNG for forms?
JPG — virtually every portal accepts it and it compresses photos best. Choose PNG only if the form demands it; PNG fits by reducing dimensions, so keep an eye on sharpness.
The tool says 'smallest possible' instead of fitting — why?
Extremely tiny targets on huge detailed images hit a physical floor. Crop out empty margins, or accept slightly smaller dimensions; the message always tells you honestly rather than pretending.
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