PixConvert
BMPPNG

BMP vs PNG

Raw pixel data vs smart compression — why PNG replaced BMP for nearly every use case.

Feature-by-Feature Comparison

Compression Type

BMP

Uncompressed

PNG

Lossless

Better

Typical File Size

BMP

Very Large

PNG

Medium to Large

Better

Image Quality

BMP

Excellent

PNG

Excellent

Transparency Support

BMP

No

PNG

Yes

Better

Animation Support

BMP

No

PNG

No

Browser Support

BMP

Windows systems, Basic image viewers, Limited web support

PNG

All modern browsers, All devices, All image editors

Color Depth

BMP

Standard

PNG

16.7 million + alpha

Best Use Case

BMP

Windows applications

PNG

Logos and graphics

When to Use BMP

  • Legacy Windows application compatibility
  • Pixel-exact data processing pipelines
  • Simple system icons and cursors
  • Embedded systems with no decompression capability
  • When zero processing overhead is required
Convert PNG to BMP

When to Use PNG

  • Virtually every modern use case
  • Web graphics and online content
  • Graphics requiring transparency
  • Cross-platform image sharing
  • Any context where file size matters
Convert BMP to PNG

The Verdict

PNG is superior to BMP in almost every way — it offers lossless quality with dramatically smaller files, transparency support, and universal compatibility. BMP is only relevant for legacy Windows applications and niche processing pipelines. If you have BMP files, converting them to PNG is almost always the right move.

Frequently Asked Questions

Common questions about BMP and PNG

Is BMP better quality than PNG?

No. Both preserve exact pixel data without quality loss. PNG achieves this with lossless compression that reduces file size by 50–80%, while BMP stores raw uncompressed data. The visual quality is identical, but PNG files are much smaller.

Why do BMP files still exist?

BMP was the native image format for Windows and remains supported by legacy applications. Some specialized software, embedded systems, and data processing pipelines still use BMP because it requires no decompression step.

How much smaller is PNG compared to BMP?

PNG files are typically 50–80% smaller than equivalent BMP files with no quality loss. For example, a 10 MB BMP screenshot might compress to 2–3 MB as PNG, while looking identical pixel-for-pixel.

Can I convert BMP to PNG without losing quality?

Yes, absolutely. Since both formats are lossless, converting BMP to PNG preserves every pixel perfectly while dramatically reducing file size. This is one of the few format conversions that is truly lossless in both directions.

Does BMP support transparency?

BMP has limited alpha channel support in the 32-bit variant, but it is poorly supported across software. PNG offers robust, universally supported transparency, making it the clear choice when transparency is needed.