Compress BMP
Free, fast and secure — shrink your BMP file right in your browser.
BMP
Make your BMP load faster everywhere
Compressing BMP strips wasted bytes and re-encodes the image efficiently, so it downloads faster, takes up less storage and speeds up your web pages — with quality you have to look hard to tell apart from the original.
How to compress BMP
- 1 Drop your BMP file into the compressor above.
- 2 Pick a compression level and it is optimised automatically.
- 3 Download your smaller BMP file instantly.
About BMP
BMP
Bitmap image
BMP is an uncompressed raster format from the Windows world. It stores raw pixels with no quality loss, producing large but perfectly exact files.
Strengths
- Completely lossless, raw pixels
- Simple, widely readable on Windows
- No compression artefacts
Limitations
- Very large file sizes
- No transparency or animation
- Rarely used on the modern web
Best for: Legacy Windows workflows and cases where an uncompressed, exact bitmap is required.
Frequently asked questions
Upload your BMP file above, pick a compression level and it is optimised automatically. When it is ready, download your smaller file — the whole thing takes just a few seconds in your browser.
You choose the balance: “High quality” keeps images looking pristine with a modest size saving, while “Smallest file” squeezes them further for the web. For most photos the difference is hard to spot.
It depends on the file and the level you pick, but savings of 40–80% are common — larger, less-optimised files shrink the most.
Yes. The compressor is free to use, with no watermark and no sign-up required.
Your files are processed securely and are never shared with anyone.