How much smaller will WebP files be?

WebP files are typically 95-98% smaller than BMP files. A 30MB BMP might become a 500KB-1MB WebP.

With lossy compression, there's minimal quality loss at 80-85% quality settings. For lossless quality, files will still be much smaller than BMP.

Is WebP widely supported?

Yes, all modern browsers support WebP. Only very old browser versions lack support.

Yes! Upload up to 50 BMP files at once and download all as a ZIP.

Convert BMP to WebP Free Online

Compress large BMP files to compact WebP format. Private, instant, and free.

Drag & drop BMP files here

or click to browse · up to 50 files at once

About This Conversion

BMP files are uncompressed and can be extremely large. Converting BMP to WebP provides the best compression available, reducing file sizes by 95% or more while maintaining excellent visual quality. WebP is supported by all modern browsers and offers both lossy and lossless compression options. Our converter processes everything in your browser for instant, private results.

Why Use This Converter?

Massive compression — WebP can reduce BMP file sizes by 95% or more.
Modern format — WebP is the standard for web-optimized images.
Quality control — Adjust compression to balance size and quality.
Browser support — Works in all modern browsers including Chrome, Firefox, Safari, and Edge.
Fast loading — Smaller files mean faster web pages and easier sharing.