BMP to WebP Converter

Convert bitmap images to WebP for the largest size reduction available. Everything runs on your own device.

  • 100% private
  • No sign-up
  • No watermark
  • Unlimited files
Drop BMP files hereor tap to browse, or paste with Ctrl+V · nothing is uploaded

    Conversion happens on your device using your browser's own image engine. Your files are never uploaded, so there is no size limit beyond your device's memory.

    The most dramatic conversion on this site

    BMP stores images essentially uncompressed, at roughly three bytes per pixel, while WebP is one of the most efficient formats in common use. Converting between them routinely cuts file size by a factor of thirty or more with no visible difference.

    A 4000×3000 bitmap that occupies about 36 MB will typically come out somewhere near 1 MB as a WebP.

    Where the result will work

    Every current browser displays WebP, so this is the right conversion for anything web-bound. If the file is destined for older desktop software or a print service, JPG is the safer target even though it will be somewhat larger.

    Frequently asked questions

    Are my files uploaded to a server?

    No. The conversion runs inside your browser using your device's own processor. Your files are never transmitted anywhere, which is why the tool works even if you disconnect from the internet after the page loads.

    How much smaller will the file be?

    Usually twenty to forty times smaller for a photographic image, since BMP applies almost no compression at all.

    Is there a file limit or a paywall?

    There is no account, no watermark, and no upload cap. Because your device does the work, the only practical limit is your available memory. The site is funded by ads, not subscriptions.

    Further reading

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