Free online image compressor
Compress image to 40KB
Reduce images to 40KB directly in your browser. It is built for strict application forms, exam portals, ID photos, and websites with very small upload limits.
Ready. No upload needed.
How to compress an image to 40KB
Choose an image, keep the target size set to 40KB, and download the optimized result. The tool adjusts quality and image dimensions until the file gets as close as possible to your target.
A 40KB limit is common for strict application forms, exam portals, ID photos, and websites with very small upload limits. Local compression means the image is processed on your device instead of being uploaded to a remote server.
Frequently asked questions
Can I compress an image to exactly 40KB?
The compressor works toward 40KB and downloads a file under that limit when the browser can produce one. Very small targets may require WebP output or smaller image dimensions.
Are my images uploaded?
No. Compression runs in your browser with Canvas, so the image stays on your device.
Which image formats are supported?
You can choose JPG, PNG, WebP, or BMP files and export the result as JPG, WebP, or PNG.