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Convert Uncompressed BMP to Lossless PNG in Your Browser

Windows Bitmap (`.bmp`) files store raw, uncompressed pixel arrays—meaning a simple 1080p screenshot weighs over 6 MB. Convert BMP to PNG in your browser to cut file size by 70–90% with zero loss in pixel accuracy.

Why convert BMP to PNG?

PNG was designed as the direct lossless successor to BMP and GIF, compressing identical pixel data into a fraction of the space with universal web support.

Private by design: zero uploads

Converted instantaneously in your browser's local memory.

Frequently asked questions

Is BMP to PNG conversion completely lossless?

Yes. Every single pixel's RGB value in the output PNG is mathematically identical to the source BMP.