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Produce a real uncompressed 24-bit Windows bitmap — the format legacy applications and embedded displays still require.
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BMP remains a requirement in a surprising number of places: older Windows business software, industrial and medical imaging systems, embedded displays, microcontroller graphics libraries and certain scientific instruments all expect an uncompressed bitmap they can read straight into memory without a decoder. This converter writes a genuine 24-bit BMP with a proper BITMAPINFOHEADER and bottom-up padded rows — not a PNG renamed with a .bmp extension, which is what many online converters quietly hand you and which fails the moment real software tries to parse it. Because 24-bit BMP has no alpha channel, any transparency in your PNG is flattened onto white first. Expect the file to grow considerably; that is inherent to storing raw uncompressed pixels.
Yes. It writes a genuine 24-bit Windows bitmap with a proper BITMAPINFOHEADER and correctly padded bottom-up rows — not a PNG with a renamed extension.
24-bit BMP has no alpha channel, so transparent pixels are flattened onto a white background before encoding.
BMP stores raw pixels with no compression — about three bytes per pixel. A 1920×1080 image is roughly 6 MB regardless of content.
Legacy Windows software, embedded and industrial displays, microcontroller graphics libraries, some medical and scientific imaging systems, and a few older printing workflows.
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