How do WebP and BMPcompare? Here's everything you need to know to choose the right format — and how to convert between them.
Web Picture Format
WebP is a modern image format developed by Google that provides superior compression for images on the web. It supports both lossy and lossless compression, transparency, and animation — all in one format.
Bitmap Image File
BMP is an uncompressed raster image format native to Windows. While it produces very large files, BMP preserves every pixel with zero quality loss, making it useful for raw image data and legacy applications.
| Specification | WebP | BMP |
|---|---|---|
| Full name | Web Picture Format | Bitmap Image File |
| Extension | .webp | .bmp |
| MIME type | image/webp | image/bmp |
| Category | Image | Image |
| Developer | Microsoft | |
| Year introduced | 2010 | 1986 |
| Compression | Lossy | Lossless |
Choose WebP for smaller file sizes, especially for photos and web content. Choose BMP when you need lossless quality, transparency, or pixel-perfect output.
Need to switch formats? Convert for free with SquishConvert.