Reduce image size
in KB.
Pick the limit your form needs — from 10 KB to 1 MB — and get a JPG that fits. Everything stays on your device.
Output: JPG under 100 KB — change it after upload
Drop images here or browse files
Paste Ctrl+V to compress screenshots instantly
Too large for your browser
We can compress it on our server instead. This one file will be uploaded, processed, and immediately discarded — it's never stored.
# File size tools
An image size reducer where you choose the KB
Different forms ask for different sizes: 20 KB for a signature, 50 KB for a photo, 200 KB for a scan. Most compressors only offer a vague “quality” slider and leave you to retry until you land under the limit.
Here you set the target instead. Add your image, choose “Max size” (10, 20, 30, 50, 100, 200, 300, 500 KB or 1 MB) and the tool finds the best quality that fits — shrinking resolution only when it has to. It starts at 100 KB, a good general-purpose size.
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You set the limit
Ten ready-made targets from 10 KB to 1 MB, changed in one tap.
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No trial and error
The tool does the searching, not you.
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Private and free
No upload, no sign-up, no watermark.
How to reduce image size to a specific KB
- 1
Drop your image in the box above.
- 2
Open “Max size” and choose the limit your form or portal requires.
- 3
Download the result — the card confirms it is under the limit and shows the dimensions.
Quick guide: which size for what
| Signature | 10–20 KB |
|---|---|
| Passport-size photo | 20–50 KB |
| Documents and certificates | 100–300 KB |
| Email and general uploads | 500 KB–1 MB |
Limits differ between exams and change between years — always follow the exact size, dimensions and format in your official notification.
# FAQ
Reduce Image Size in KB: common questions
How can I reduce image size in KB?
Add your image, choose the maximum size you need in “Max size”, and download the result — it is automatically compressed to fit under that limit.
What is the smallest size I can reach?
The lowest preset is 10 KB. Very detailed photos may need to be scaled down to reach it; the card tells you if a limit could not be met.
Does reducing size change the dimensions?
Only when quality alone cannot reach your target. The result card always shows the final width × height.
Which format is best?
JPG for forms and uploads. For your own website, WebP gives smaller files — change “Format” if you want it.