Why would I need a BMP file?

BMP is a legacy format required by some older Windows applications, hardware devices, or certain printing pipelines that do not accept compressed image formats.

How is BMP generated without a server?

The tool reads raw pixel data from an HTML canvas using getImageData(), then writes a valid BMP binary manually — including the file header, info header, and 24-bit pixel rows — entirely in JavaScript.

Does the output BMP support transparency?

No. BMP 24-bit format does not support an alpha channel. Transparent areas in your PNG will be filled with white in the output BMP.

PNG to BMP

Convert PNG images to uncompressed BMP format using a built-in BMP encoder — runs entirely in your browser.

Drop a PNG file here or click to browse

Accepts PNG files · Transparent areas become white

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FAQ

Why would I need a BMP file?: BMP is a legacy format required by some older Windows applications, hardware devices, or certain printing pipelines that do not accept compressed image formats.
How is BMP generated without a server?: The tool reads raw pixel data from an HTML canvas using getImageData(), then writes a valid BMP binary manually — including the file header, info header, and 24-bit pixel rows — entirely in JavaScript.
Does the output BMP support transparency?: No. BMP 24-bit format does not support an alpha channel. Transparent areas in your PNG will be filled with white in the output BMP.

The PNG to BMP converter uploads a PNG and produces a valid BMP file using a built-in binary BMP encoder. The encoder writes a standard BITMAPFILEHEADER and BITMAPINFOHEADER followed by raw 24-bit pixel data extracted from the canvas. Conversion runs fully client-side — no data is sent to a server.