Convert BMP to PNG
Convert BMP to PNG right in your browser. Drop your files in and download — no upload, no sign-up, no quality loss you didn't choose.
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BMP · multiple files at once
Your files stay in your browser. Nothing is uploaded.
BMP files are uncompressed, so they're enormous — a single image can be tens of megabytes. PNG stores the exact same pixels with lossless compression, often shrinking the file by 80% or more with zero quality loss. It's the obvious upgrade for any BMP you want to keep or share.
When to convert BMP to PNG
- You want to shrink a huge BMP without losing any quality.
- You need transparency support the BMP context allows.
- You're modernizing old BMP files.
- You're sharing somewhere BMP is impractical.
Where BMP files come from
You usually run into BMP from older Windows software — the classic Paint app, some scanner exports, screen captures on old systems, or assets from legacy programs. Converting to PNG modernizes them: the same pixels, a fraction of the size, and a file that opens everywhere.
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Frequently asked questions
- Does the PNG keep everything the BMP had?
- Yes — every pixel, exactly. BMP carries no metadata such as EXIF, so there's nothing else that could be lost in the conversion.
- Will I lose quality?
- No. PNG is lossless, so the image is pixel-for-pixel identical to the BMP — just much smaller.
- How much smaller will it be?
- Often 80% or more, because BMP stores every pixel uncompressed and PNG compresses losslessly.
- Does PNG keep transparency?
- Yes, and the conversion preserves an alpha channel where the BMP has one.