What is BMP (Bitmap)?
BMP is an uncompressed Windows bitmap format with very large files.
BMP stores pixels almost raw. Converting a BMP to PNG or JPG usually shrinks it by 90 percent or more without visible change.
File extensions: .bmpMIME types: image/bmp
Advantages
- Simple structure
- No compression artifacts
- Easy to process in old software
Disadvantages
- Huge files
- No real transparency support in most tools
- Not used on the web
Typical uses
- Legacy Windows software
- Embedded devices
- Simple pixel processing
Compatibility
Opens in every operating system and in all browsers, though nobody should use it for the web.
Convert BMP to another format
Convert to BMP from another format
Frequently asked questions
Are my files uploaded to a server?
No. The conversion runs entirely in your browser with local code. Your files never leave your device, and there is no upload.
Is there a file size limit?
There is no limit on our side, but your browser memory is. Images work for very large files; for videos, files above a few hundred megabytes can fail on devices with little memory.
Will the quality suffer?
That depends on the target format and settings. Use the quality option to balance size and detail; lossless targets keep everything the source contained.
Which browsers are supported?
Current versions of Chrome, Edge, Firefox and Safari. Fast hardware paths are used where available, with a compatible fallback otherwise.