Convert BMP to WebP
Free online BMP to WebP converter. Drag and drop files, convert in batch, and download, without ever uploading to a server.
Why convert BMP to WebP?
Convert BMP to WebP to take an uncompressed bitmap (from an old screenshot tool, a scanner, or legacy software) and turn it into a small, modern web-ready file with the option of full transparency.
Tips
- This usually produces the smallest practical output of any BMP conversion on this site, since WebP compresses far more aggressively than PNG or JPG at comparable quality.
- Use lossless WebP if the BMP is a graphic or screenshot with flat colors and text; use lossy mode for photos.
Skipping the usual PNG middle step
Converting an old BMP for the web usually gets suggested as a two-step process: BMP to PNG first, then PNG to WebP if you want the smaller file. There's no real need for the extra step. This tool decodes the BMP's raw pixel data directly and writes WebP straight from that, giving you the same end result as going through PNG, just faster and without an intermediate file to manage. The BMP's pixels are read once and compressed once, whichever route you take.
Frequently asked questions
How do I convert BMP to WebP?
Drop your BMP file into the converter above, adjust the quality if needed, and click "Convert to WebP". The conversion happens entirely in your browser. Your file is never uploaded to any server.
Is the BMP to WebP conversion lossless?
WebP is a lossy format. Quality is controllable from 1-100% (default 92%); at recommended settings the result is visually close to the source for most photos.
Is there a file size limit?
The tool can handle files up to about 20 MB per image. Since processing happens in your browser, the practical limit is your device's available memory. Most modern devices can comfortably batch-convert dozens of images at once.
Are my BMP files uploaded to your servers?
No. All BMP to WebP conversion happens entirely client-side. Conversion uses the Canvas API. Your files never leave your browser.