Convert BMP to PNG Online
Massive file sizes (a 1920x1080 image is ~6 MB uncompressed) make it impractical for web or sharing. Converting to PNG gives you a key advantage: lossless compression with full alpha-channel transparency — every pixel is preserved exactly. PNG is best for screenshots, logos, ui elements, and any image requiring transparency or pixel-perfect accuracy.
Why Convert BMP to PNG?
Massive file sizes (a 1920x1080 image is ~6 MB uncompressed) make it impractical for web or sharing — converting to PNG overcomes this by providing lossless compression with full alpha-channel transparency — every pixel is preserved exactly
PNG is the right choice when you need to: exporting app and website screenshots with crisp text and interface elements
Gain broader compatibility — PNG works with Universal — all browsers, image editors, operating systems, and web platforms
Your BMP files were created for legacy windows application resources and system icon bitmaps, but now you need a format suited to different workflows
BMP vs PNG — Format Comparison
Windows Bitmap (.bmp)
Portable Network Graphics (.png)
How to Convert BMP to PNG
Upload your BMP file
Drag your .bmp file onto the upload area or click to browse. We accept BMP files up to 100 MB.
Choose PNG as output format
Select .png (Portable Network Graphics) from the format list. PNG uses lossless compression, so your output quality matches the source.
Convert and download
Click Convert and wait for processing. Your PNG file will be ready to download in seconds. The result is optimized for screenshots, logos, ui elements, and any image requiring transparency or pixel-perfect accuracy.
Frequently Asked Questions
Is the BMP to PNG conversion lossless?
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When both formats support lossless data, the conversion preserves all content. Lossless with up to 48-bit true color and 16-bit alpha channel; no generation loss on re-save.
How large will my PNG file be compared to the original BMP?
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BMP files are typically 1 MB – 100 MB, while PNG files are typically 10 KB – 25 MB. The actual size depends on content complexity and any quality settings you choose.
What software can open the converted PNG file?
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PNG is compatible with: Universal — all browsers, image editors, operating systems, and web platforms.
What is the maximum file size I can convert?
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PureConverter accepts BMP files up to 100 MB. Your files are processed securely and deleted from our servers after conversion.
What's the difference between BMP and PNG?
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BMP (Windows Bitmap) is best for uncompressed pixel data for windows system graphics and legacy applications requiring raw bitmap access. PNG (Portable Network Graphics) is best for screenshots, logos, ui elements, and any image requiring transparency or pixel-perfect accuracy. Key tradeoff: BMP's advantage is zero processing overhead — raw pixel data can be read directly into memory without a decompression step, while PNG's advantage is lossless compression with full alpha-channel transparency — every pixel is preserved exactly.
Pro Tips for BMP to PNG Conversion
PNG preserves full quality, so your output file will be as good as the BMP source — no need to worry about compression artifacts
If your BMP file has transparency, make sure PNG supports it — PNG supports transparency
PNG works especially well for: saving digital art and illustrations where every pixel must be preserved
Did you know? PNG was created in 1995 specifically to replace GIF after Unisys began enforcing its LZW patent — the name originally stood for "PNG's Not GIF."
Ready to Convert?
Upload your BMP file above and get your PNG in seconds. Free, fast, and secure.