Convert Bitmap Image (.bmp) to WebP Image (.webp) online for free. Fast, secure image conversion with no watermarks or registration.
Conversion settings — add a file to adjust
Upload your .bmp file by dragging it into the upload area or clicking to browse.
Choose your output settings. The default settings work great for most files.
Click Convert and download your .webp file when it's ready.
WebP is Google's modern image format supporting both lossy and lossless compression, full alpha transparency, and animation. Converting BMP to WebP provides the most dramatic file size reduction available for bitmap images: lossless WebP is typically 70-85% smaller than BMP, and lossy WebP at quality 85 can be 95%+ smaller while maintaining excellent visual quality.
BMP's uncompressed pixel data is the ideal source for WebP encoding. The encoder works with pristine, artifact-free input, producing optimal compression results. This makes BMP-to-WebP conversion one of the most efficient paths from legacy format to modern web standard — a single step that reduces a 6 MB BMP to 300 KB-1.5 MB depending on content and compression mode.
Massive file size reduction is the primary benefit. BMP files are completely impractical for web use, email, and modern storage due to their enormous uncompressed size. WebP provides the most advanced compression available, reducing BMP files by 70-95% while maintaining excellent quality. For web delivery, WebP's smaller size translates directly to faster page loads.
WebP is supported by all modern browsers (Chrome, Firefox, Safari, Edge), covering 97%+ of global web traffic. It combines the best features of JPEG (efficient lossy compression for photos) and PNG (lossless compression with transparency) in a single format. Converting BMP to WebP provides the most modern, efficient result in a single conversion step.
Sharp reads the BMP's uncompressed 24-bit pixel data and encodes it using WebP's compression engine. Lossless mode uses predictive coding with entropy compression (LZ77 + Huffman), typically achieving 70-85% reduction from BMP. Lossy mode uses VP8 block-based prediction for even greater savings. Both modes support alpha transparency (not present in BMP source). Quality parameter (1-100) controls lossy aggressiveness; effort (0-6) controls lossless optimization thoroughness.
Lossless WebP preserves every pixel exactly — mathematically identical to the BMP source. Lossy WebP at quality 85 is visually indistinguishable from the original for photographic content. BMP's uncompressed data provides optimal input for the WebP encoder — no pre-existing artifacts to compound. The result is the highest-quality WebP possible from the given image content.
| Device | BMP | WebP |
|---|---|---|
| Windows PC | Native | Partial |
| macOS | Partial | Partial |
| iPhone/iPad | Partial | Partial |
| Android | Partial | Native |
| Linux | Partial | Partial |
| Web Browser | No |
BMP to WebP conversion provides the most dramatic file size reduction available — 70-95% — while maintaining excellent quality. It is the single best modernization path for legacy BMP files destined for web use or modern storage.
Безопасная передача
Загрузки зашифрованы по HTTPS
Конфиденциальность прежде всего
Файлы автоматически удаляются после обработки
Без регистрации
Начните конвертировать мгновенно
Работает везде
| Native |
Любой браузер, любое устройство
| Характеристика | BMP | WebP |
|---|---|---|
| Полное название | Bitmap Image | WebP Image |
| Расширение | .bmp | .webp |
| Лучше всего подходит для | Uncompressed | Superior compression |