Convert BMP to WebP
Free online BMP to WebP converter. Drop an image below and convert it instantly — right in your browser, with no upload and no sign-up.
100% private — your image is processed in your browser and never uploaded.
Why convert BMP to WebP?
BMP is an uncompressed raster format from early Windows. It preserves every pixel but produces very large files, so it is mainly used for compatibility with legacy software. WebP is a modern Google format that compresses 25-35% smaller than JPG and PNG at similar quality, while supporting both transparency and animation.
- Shrink file size — WebP typically produces noticeably smaller files than BMP, which speeds up websites and saves bandwidth.
- WebP supports transparency, so you can later cut out backgrounds — something BMP cannot store.
- WebP compression makes the image far smaller than BMP; use the quality slider to balance size against sharpness.
- Replace the bulky, uncompressed BMP with a much smaller WebP file at the same visual quality.
How to convert BMP to WebP
- Upload your BMP file. Drag and drop your BMP image into the box above, or click to browse. Files up to 5 MB are supported.
- Adjust settings (optional). Use the quality slider to choose how much WebP compression to apply.
- Click "Convert to WebP". The conversion runs instantly in your browser. Nothing is sent to a server.
- Download your image. Click the download button to save your new WebP file to your device.
BMP vs WebP
| Property | BMP | WebP |
|---|---|---|
| Compression | Lossless | Lossy |
| Transparency | No | Yes |
| Best for | legacy Windows applications and workflows that require raw, uncompressed bitmaps | fast-loading websites where you want small files without giving up transparency or quality |
Frequently asked questions
Is the BMP to WebP converter free?
Yes. ConvertPix is completely free with no limits on the number of conversions, no watermarks, and no account required.
Are my BMP images uploaded to a server?
No. Conversion happens entirely inside your web browser using your own device. Your images are never uploaded, stored, or seen by anyone.
Will I lose quality converting BMP to WebP?
WebP uses lossy compression. At the default quality the difference is hard to notice; lower the slider for smaller files or raise it for maximum fidelity.
Does WebP support transparency?
Yes, WebP supports a transparency (alpha) channel, so transparent areas are preserved.
What is the largest file I can convert?
You can convert BMP images up to 5 MB. Because processing is done on your device, very large images depend on your device's available memory.