Convert BMP and bitmap images to WebP directly in your browser. Smaller than PNG with full transparency support — the recommended format for modern websites.
Smaller
Than PNG
Full
Transparency
Instant
Conversion
Private
No Uploads
Drop BMP files here or click to browse
Supports .bmp and .dib, all processing stays in your browser
WebP is the best general purpose target when a BMP image is headed for a website rather than print or further editing.
Screenshots and UI graphics for the web
BMP screenshots converted to WebP load far faster and take up much less storage on a website.
Legacy icons and graphics with transparency
32-bit BMP files with an alpha channel convert cleanly to WebP, keeping transparency at a smaller file size.
Old bitmap archives published online
Publishing a folder of old BMP files becomes far more practical once each one is converted to WebP.
Improving Core Web Vitals
Replacing large BMP or PNG files with WebP directly reduces page weight and supports better Largest Contentful Paint scores.
Working on a full image SEO pass? The Optimize Images for SEO guide covers format choice, compression and structured data together.
WebP combines the benefits of both older formats. It supports transparency like PNG while producing significantly smaller files than an uncompressed BMP, and it offers better compression than JPEG at equivalent visual quality. For a BMP image headed for a website, WebP is usually the best balance of quality, transparency support and file size.
Yes. WebP is supported by every major modern browser, including Chrome, Firefox, Safari and Edge. It is considered a safe default format for web images in 2026, recommended by Google's PageSpeed Insights as a next-generation alternative to JPEG and PNG.
Yes. If your source BMP includes an alpha channel, most commonly in 32-bit BMP files, it is preserved through the conversion. WebP supports full transparency, similar to PNG, while producing smaller files.
No. Both the decoding and the WebP encoding happen entirely in your browser. Your file never leaves your device at any point during the conversion.
