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Convert BMP images to PNG format for lossless compression. Free online converter, no upload needed.
Conversion runs locally in your browser. No server upload, no signup, no watermark.
BMP files lack compression and are not supported on the web. PNG provides lossless compression, reducing file size while preserving every pixel. It also supports transparency, which BMP does not.
Use PNG when you need exact pixel reproduction — screenshots, technical diagrams, logos, and graphics with text or sharp edges.