Convert BMP to WebP Online Free
Convert uncompressed BMP bitmaps to the efficient WebP format. Reduce file sizes by 95% or more while maintaining excellent image quality for web use.
To convert BMP to WebP, drop your BMP file into the converter above. ChangeThisFile compresses the uncompressed bitmap into WebP format directly in your browser, typically reducing file size by 95% or more. The conversion is free, instant, and your files never leave your device.
Convert BMP to WebP
Drop your BMP file here to convert it instantly
Drag & drop your .bmp file here, or click to browse
Convert to WebP instantly
BMP vs WebP: Format Comparison
Key differences between the two formats
| Feature | BMP | WebP |
|---|---|---|
| Compression | Uncompressed (raw pixels) | Lossy (VP8) or lossless (VP8L) |
| File size | Very large | 95%+ smaller than BMP |
| Transparency | Limited (32-bit BMP only) | Full alpha channel |
| Color depth | Up to 32-bit | 8-bit per channel + alpha |
| Animation | Not supported | Supported |
| Browser support | Universal | Chrome, Firefox, Edge, Safari 14+ |
| Best for | Raw data, Windows apps | Web images, modern applications |
When to Convert
Common scenarios where this conversion is useful
Making BMP files shareable online
BMP files are too large for email or web sharing. Converting to WebP reduces a 10MB BMP to under 500KB, making it easy to share without quality loss.
Optimizing scanned documents
Scanners often save images as BMP. Convert them to WebP for drastically smaller files that are easier to store, share, and upload to document management systems.
Migrating legacy image archives
Old image collections stored as BMP waste enormous amounts of storage. Batch convert to WebP to reclaim disk space while maintaining visual quality.
Preparing images for web publishing
BMP files cannot be used on websites. Convert to WebP for web-optimized images that load quickly and look great across modern browsers.
How to Convert BMP to WebP
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1
Drop your BMP file
Drag and drop your BMP image into the converter area, or click browse to select it from your device.
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2
Instant conversion
Your browser decodes the uncompressed BMP data and encodes it as WebP using the Canvas API. The dramatic compression happens entirely on your device.
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3
Download your WebP
Save the converted WebP file. You'll see a dramatic file size reduction — typically 95% or more compared to the original BMP.
Frequently Asked Questions
Expect 95-99% reduction for photographic content. A 10MB BMP photo typically becomes 200-500KB as WebP. Simple graphics see 90-95% reduction. The savings are dramatic because BMP is completely uncompressed.
WebP lossy compression introduces minimal, typically imperceptible quality loss. Since BMP is uncompressed, you're starting from perfect quality, and the WebP output at default settings looks virtually identical.
WebP produces 25-35% smaller files than JPG at equivalent quality, and it supports transparency. If you need maximum compatibility with older browsers, JPG is an option, but WebP is the better modern choice.
Yes, all modern browsers support WebP: Chrome, Firefox, Edge, Safari 14+, and Opera. This covers over 97% of global browser usage. Only very old browser versions lack support.
If your BMP has transparency (32-bit BMP with alpha channel), WebP will preserve it. WebP has full alpha channel support for semi-transparent pixels.
Microsoft Office 365 and newer versions support WebP images. Older versions may not recognize WebP, in which case you'd want JPG or PNG instead.
Yes. All processing happens in your browser. Your BMP files are never uploaded to any server. This is safe for medical images, business documents, and personal photos.
Yes. This converter works in all modern mobile browsers. Open this page on your phone and convert files directly without installing any app.
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