BMP vs PNG: Which Should You Use?

Side-by-side comparison of BMP and PNG image formats — features, pros, cons, and conversion options.

Quick Answer

BMP is best for Simple uncompressed images in Windows applications. PNG is best for Graphics with transparency, screenshots, and diagrams.

Quick Verdict

BMP Best for Simple uncompressed images in Windows applications

✓ Simple uncompressed format
✓ No quality loss
✓ Universal Windows support
✗ Extremely large file size

Convert BMP to PNG →

PNG Best for Graphics with transparency, screenshots, and diagrams

✓ Lossless compression
✓ Full transparency support
✓ Universal web support
✗ Larger than JPEG for photos

Convert PNG to BMP →

Specs Comparison

Side-by-side technical comparison of BMP and PNG

Feature	BMP	PNG
Category	Image	Image
Year Introduced	1986	1996
MIME Type	image/bmp	image/png
Extensions	.bmp	.png
Lossy	✗	✗
Lossless	✓	✓
Transparency	✗	✓
Animation	✗	✗
Max Color Depth	32-bit	16-bit
Hdr	✗	✗

Pros & Cons

BMP

Pros

✓ Simple uncompressed format
✓ No quality loss
✓ Universal Windows support

Cons

✗ Extremely large file size
✗ No transparency
✗ No compression

PNG

Pros

✓ Lossless compression
✓ Full transparency support
✓ Universal web support

Cons

✗ Larger than JPEG for photos
✗ No animation (use APNG)
✗ No lossy mode

When to Use Each

Choose BMP when...

You need files optimized for Simple uncompressed images in Windows applications
Simple uncompressed format
No quality loss
You need lossless quality

Choose PNG when...

You need files optimized for Graphics with transparency, screenshots, and diagrams
Lossless compression
Full transparency support
You need lossless quality

How to Convert

Convert between BMP and PNG for free on ChangeThisFile

Convert BMP to PNG Runs in your browser — files never leave your device Convert PNG to BMP Runs in your browser — files never leave your device

Frequently Asked Questions

What's the difference between BMP and PNG?

BMP is best for Simple uncompressed images in Windows applications, while PNG is best for Graphics with transparency, screenshots, and diagrams. Both are image formats but they differ in compression, compatibility, and intended use cases.

Is BMP or PNG better for image?

It depends on your use case. BMP is better for Simple uncompressed images in Windows applications. PNG is better for Graphics with transparency, screenshots, and diagrams. Consider your specific requirements when choosing between them.

How do I convert BMP to PNG?

Go to the BMP to PNG converter on ChangeThisFile. The conversion runs entirely in your browser — your file never leaves your device. It's free with no signup required.

Can I convert PNG to BMP?

Yes. ChangeThisFile supports PNG to BMP conversion. The conversion runs in your browser with no upload required.

Which is smaller, BMP or PNG?

File size depends on the content and compression settings. BMP preserves full quality. PNG preserves full quality. For the smallest files, choose the format with lossy compression that meets your quality needs.

Does BMP support transparency?

No, BMP does not support transparency, whereas PNG does. This may be an important factor depending on your use case.

Is BMP or PNG free to use?

Both BMP and PNG are supported file formats that are free to use. You can convert between them for free on ChangeThisFile — browser-based conversions have no limits and your files never leave your device.

Which format is newer, BMP or PNG?

PNG is newer — it was introduced in 1996, while BMP dates back to 1986. Newer formats often offer better compression and features, but older formats tend to have wider compatibility.