BMP to WebP Converter
Convert BMP to WebP free — no upload, no signup
To convert BMP to WebP, drop your BMP images into the box below, click Convert, then Download. Fylo does the work inside your browser, so nothing is uploaded and there's no signup or watermark. It takes you from the largest image format to one of the smallest.
Drop images here
or tap to browse · paste with Ctrl+V · add many at once
Your files never leave your device
Higher keeps more detail; lower makes smaller files.
Advanced
Pixel-perfect output for graphics, screenshots and text.
Leave empty to keep the original size.
How to convert BMP to WebP
Add your BMP files
Drag and drop BMP files into the box, tap to choose them, or paste with Ctrl+V. You can add many at once.
Check the quality
Leave WebP quality at the default 80 or adjust the slider — higher keeps more detail, lower makes smaller files.
Convert and download
Click Convert, then download each WebP or get them all in one ZIP.
Why convert BMP to WebP?
Publishing old BMP graphics on a website? WebP gives you a web-ready file that loads fast on mobile — often a tiny fraction of the BMP's size.
Does converting BMP to WebP affect quality or size?
Expect reductions of 95% or more for photos at the default lossy quality. For diagrams and screenshots, switch on Lossless in Advanced to keep every pixel exact while still saving most of the space.
What's the difference between BMP and WebP?
BMP is Microsoft's uncompressed bitmap format. It's simple and lossless but huge: every pixel is stored raw, so a 12-megapixel photo takes about 36 MB.
WebP is Google's web image format. It supports lossy and lossless compression, transparency and animation, and is typically 25–35% smaller than JPG at similar quality.
Learn more: BMP format guide · WebP format guide
| Property | BMP | WebP |
|---|---|---|
| Compression | Usually none (optional RLE) | Lossy (VP8) or lossless (VP8L) |
| Transparency | Rarely (32-bit only) | Yes — full 8-bit alpha |
| Animation | No | Yes |
| Colour depth | 1 to 32-bit | 24-bit + alpha |
| Typical size, 12 MP photo | ≈ 36 MB | ≈ 1.5–3 MB |
| Support | Windows, most editors, all major browsers | All modern browsers (Safari 14+, 2020) |
| Best for | Legacy Windows software, embedded displays | Website images, e-commerce, blogs |
| Introduced | 1985 | 2010 |
Frequently asked questions
Lossy or lossless WebP for BMP files?
Lossless for screenshots, text and pixel art; lossy for photos and scans where small size matters most.
Can I convert a whole folder of BMP files?
Select or drop all the files at once. Fylo processes them as a batch and offers a single ZIP download.
Are my BMP files uploaded to a server?
No. Fylo converts BMP to WebP entirely inside your browser using a background Web Worker, so your files never leave your device. That's also why it's fast — there's no upload or download wait.
Related tools
Updated