Compress BMP
Reduce BMP file size online for free. No signup, no watermark.
Tap to upload or drop a file
.bmp files · Max 100MB
How it works
Upload
Drop .bmp
Compress
Pick a level
Download
Smaller file
About BMP compression
BMP files are uncompressed by default, making them extremely large. Compressing a BMP converts it to an optimized format, often reducing file size by 80-95%.
FAQ
Is this free?
Yes, completely free. No signup, no watermarks, no hidden fees.
Is my file safe?
Files are compressed on our servers and immediately deleted. We never store or share your files.
What's the maximum file size?
You can compress files up to 100MB.
Why are BMP files so large?
BMP stores every pixel as raw, uncompressed data. A 1920x1080 image in 32-bit color takes ~8MB as BMP versus ~200KB as compressed PNG.
What format does the compressed BMP become?
Since BMP has very limited built-in compression, we optimize it to a compact PNG format which preserves lossless quality at a fraction of the size.