Free Resize Image to KB
Compress any image to a target file size in KB — no upload, no signup.
How to use Resize Image to KB
Compress any image to a target file size in KB — no upload, no signup.
Frequently asked questions
How does the KB target work?
We iteratively adjust compression quality until the output file size is at or below your target KB.
Is my image uploaded?
No. All compression runs in your browser. Your image never leaves your device.
What is the minimum achievable size?
It depends on the image content. Very detailed photos cannot be compressed below a certain threshold without severe quality loss.
Which formats are supported?
JPEG, PNG, and WebP inputs are supported. Output is always JPEG for maximum compression ratio.
Can I set a target in MB instead of KB?
The tool uses KB as the unit. To target 1 MB, enter 1024 KB.