BMP Format — What is Bitmap Image File?
BMP is an uncompressed raster image format native to Windows. It produces very large files but preserves exact pixel data without any compression artifacts.
Extension
.bmp
Compression
Lossless
Transparency
No
MIME Type
image/bmp
Pros & Cons
✅ Pros
- • No compression artifacts
- • Simple format
- • Wide Windows support
- • Exact pixel preservation
❌ Cons
- • Very large file sizes
- • No transparency
- • Not suitable for web
- • Inefficient storage
Best Use Cases
- Windows applications
- Pixel-perfect preservation
- Simple image editing
- Legacy systems
Technical Details
BMP stores pixel data in a device-independent bitmap format. It supports various color depths (1, 4, 8, 16, 24, 32-bit) and optional RLE compression.
History
BMP was developed by Microsoft for Windows and OS/2. It has been part of the Windows operating system since version 3.0 in 1990.
Frequently Asked Questions About BMP
What is BMP (Bitmap Image File)?
BMP is an uncompressed raster image format native to Windows. It produces very large files but preserves exact pixel data without any compression artifacts.
Can I open BMP files on Windows and Mac?
Yes, BMP files can be opened on both Windows and Mac using built-in image viewers and most image editing software.
Does BMP support transparency?
No, BMP does not support transparency. If you need transparent backgrounds, consider using PNG, WebP, or SVG instead.
Is BMP lossy or lossless?
BMP uses lossless compression, meaning no image data is lost. The image quality is preserved exactly as the original.
How do I convert BMP to JPG or PNG?
You can convert BMP to JPG or PNG instantly using FormatPic's free online converter. Simply upload your BMP file, choose your output format, and download the result. All processing happens in your browser — no files are uploaded to any server.
What is BMP best used for?
BMP is best used for windows applications, pixel-perfect preservation, simple image editing, legacy systems. No compression artifacts is one of its key advantages.