BMP to PNG Converter

Convert BMP images to PNG for lossless compression and much smaller file sizes. LessMB processes the conversion locally in your browser.

Drop your file here, or

Files stay on your device

JPG · PNG · WebP · GIF · AVIF · SVG

No upload required100% free foreverWorks in your browser
How it works

BMP to PNG Converter for private browser workflows

Lossless compression

PNG applies lossless compression to pixel data, typically reducing BMP file sizes by 50-80% without any quality loss.

Universal format

PNG is supported everywhere — browsers, apps, design tools and operating systems. BMP is mainly a Windows legacy format.

Local browser processing

Your BMP file is processed entirely on your device. No server upload is needed.

Common use cases

Convert old BMP files from Windows applications to modern PNG format.

Legacy file conversion

Make BMP graphics web-ready with PNG format for sites and applications.

Web and app assets

Reduce BMP file sizes by 50-80% with lossless PNG compression.

Storage savings

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FAQ

BMP to PNG Converter FAQ

Answers for the most common questions about this tool, supported workflows, and local browser processing.

No uploadFree toolBrowser-based
Is converting BMP to PNG free?

Yes. LessMB converts BMP to PNG for free in your browser without an account.

Does PNG lose quality from BMP?

No. PNG is lossless, so the converted image is pixel-identical to the BMP source but much smaller.

Are files uploaded?

No. Processing runs locally in your browser session.