Sample BMP Files — Windows Bitmap for Testing

Download free sample BMP files in 4-bit (16-color legacy) and 24-bit (true color) variants. Windows Bitmap is a legacy format used in Windows development and system testing.

BMP

sample-100kb.bmp

109 KB

200×186 · 24-bit · RGB

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Verified file details

Filename: sample-100kb.bmp
Exact size: 111,654 bytes
Displayed size: 109 KB
MIME type: image/bmp
Dimensions: 200 x 186 px
Bit depth: 24-bit
Color space: RGB
License: CC0 / Public Domain
Download URL: https://truefilesize.com/files/bmp/sample-100kb.bmp

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BMP

sample-1mb.bmp

900 KB

640×480 · 24-bit · RGB

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Verified file details

Filename: sample-1mb.bmp
Exact size: 921,654 bytes
Displayed size: 900 KB
MIME type: image/bmp
Dimensions: 640 x 480 px
Bit depth: 24-bit
Color space: RGB
License: CC0 / Public Domain
Download URL: https://truefilesize.com/files/bmp/sample-1mb.bmp

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BMP

sample-4bit.bmp

225 KB

320×240 · 4-bit

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Verified file details

Filename: sample-4bit.bmp
Exact size: 230,454 bytes
Displayed size: 225 KB
MIME type: image/bmp
Dimensions: 320 x 240 px
Bit depth: 4-bit
License: CC0 / Public Domain
Download URL: https://truefilesize.com/files/bmp/sample-4bit.bmp

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BMP

sample-24bit.bmp

900 KB

640×480 · 24-bit · RGB

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Verified file details

Filename: sample-24bit.bmp
Exact size: 921,654 bytes
Displayed size: 900 KB
MIME type: image/bmp
Dimensions: 640 x 480 px
Bit depth: 24-bit
Color space: RGB
License: CC0 / Public Domain
Download URL: https://truefilesize.com/files/bmp/sample-24bit.bmp

See how TrueFileSize generates and measures sample files, or review the editorial policy.

What is BMP used for?

Legacy Windows application development
System-level graphics testing (boot screens, BIOS)
Testing backward compatibility with older image formats
Embedded systems with limited format support
Testing uncompressed image handling (no decoding overhead)

Technical specifications

Format	Windows Bitmap (BMP/DIB)
Compression	None (uncompressed) or RLE
Bit depths	1, 4, 8, 16, 24, 32 bits
Color support	16 colors (4-bit) to 16.7M (24-bit)
Platform	Windows native, supported everywhere

Frequently Asked Questions

Is BMP still used?

Rarely. BMP has been largely replaced by PNG (for lossless) and JPG (for photos). It's still found in legacy Windows applications, embedded systems, and some scientific imaging. We include it for testing backward compatibility.

Why are BMP files so large?

BMP files are typically uncompressed — every pixel is stored individually. A 640×480 24-bit BMP is ~900KB, while the same image as JPG would be ~50KB. This makes BMP useful for testing uncompressed image handling.

What is 4-bit BMP?

4-bit BMP supports only 16 colors from a palette. It's a legacy format from early Windows (3.x era). Our sample-4bit.bmp lets you test that your application correctly handles palette-based images.

Can browsers display BMP files?

Yes. All modern browsers (Chrome, Firefox, Safari, Edge) can display BMP images inline. However, BMP should not be used for web content due to large file sizes — use PNG or WebP instead.

Other image formats

PNG JPG TIFF ICO

Sample BMP Files — Windows Bitmap for Testing

What is BMP used for?

Technical specifications

Frequently Asked Questions

Other image formats

Related reading

WebP vs PNG vs JPG — Which Format Should You Use?

Image Optimization for Web Performance

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