Convert
BMP to WebP Converter
Convert BMP files to WebP to reduce their size dramatically for websites. Conversion runs in your browser, and nothing is uploaded.
Your images never leave your device
How to use BMP to WebP
- Drop your BMP files on the page or pick them from your device.
- Wait while each file is converted to WebP on your device.
- Download the WebP files one by one, or all together as a zip.
Frequently asked questions
Is WebP better than JPG for converting BMP files?
For websites, usually yes: it is smaller at similar quality. For sharing with people or programs you do not control, JPG is safer.
How big will the WebP be?
A BMP photo of 36 MB commonly becomes 1 to 3 MB, depending on content.
Can I keep the quality exactly?
WebP can be lossy, so it does not guarantee identical pixels. For an exact copy that is still much smaller than the BMP, use PNG.
Are my BMP files uploaded anywhere?
No. The conversion runs in your browser using WebAssembly, so your BMP files stay on your device. There is no signup, no watermark and no cost, and you can convert a whole batch and download it as a zip.
About BMP to WebP
A BMP is the opposite of web-ready, and WebP is built for the web. Converting a 36 MB BMP photo to WebP can take it under 2 MB, and the result displays in every current browser. It is the convert-and-publish choice for old scans or archives that were saved as BMP and now need to appear on a site.
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The result is a fraction of the BMP's size, often well under a tenth. WebP can be lossy, so a little fine detail is discarded for photographs; screenshots or pixel art that must stay exact should go to PNG instead. BMP has no transparency, so the WebP has none either. Metadata is removed. Some older programs, email tools and upload forms still do not accept WebP.
BMP is normally uncompressed, so file size depends only on the pixel count; WebP is either lossy or lossless, depending on how the file was saved. BMP has no transparency, so the WebP result is fully opaque and looks the same on any background. For scale, a 12-megapixel photo is typically about 36 MB as BMP and 1.5 to 3.5 MB as WebP. Compatibility: Every current browser displays it. Some older desktop software, email clients and upload forms still reject it.