UnlimitedConvert
BMP to WebP Converter
Turn BMP files into WebP in seconds. Everything happens on your device: nothing is uploaded, and there's no limit.
Your images are processed in this browser tab and never uploaded.
Why convert BMP to WebP?
BMP files are uncompressed and very large.
WebP files are much smaller, so websites load faster and use less storage.
What to expect
- WebP is lossy, so the file gets much smaller. At the default quality (90%) the difference is very hard to see; you can change it before converting.
How to convert BMP to WebP
Add your files
Drop your BMP files into the box or tap “select files”. Add as many as you like.
Pick the options
Set the quality. 80–90% gives much smaller files with no visible difference.
Convert and download
Press Convert. Download each WebP on its own, or everything at once as a ZIP file.
BMP vs WebP
| BMP | WebP | |
|---|---|---|
| Full name | Windows Bitmap | WebP |
| Compression | Lossless | Lossy |
| Transparency | No | Yes |
| Animation | No | Yes |
| Best for | old Windows programs, embedded devices and tools that require uncompressed images | images on websites, where smaller files mean faster pages |
| Support | Opens on Windows, macOS and most image editors. | All current browsers show WebP. Some older desktop apps and print services still don't accept it. |
About the formats
BMP (Windows Bitmap, 1990) is a simple, uncompressed Windows format. Files are large because every pixel is stored as-is, but almost any program, including very old software and embedded devices, can read it.
WebP (WebP, 2010) is Google's modern web format. It makes files roughly 25–35% smaller than JPG or PNG at the same visual quality and supports both transparency and animation.
Frequently asked questions
How do I convert BMP to WebP?
Drop your BMP files into the box above (or tap Select files), check the options, then press Convert. Each WebP downloads on its own, or you can download them all as one ZIP file.
Are my files uploaded anywhere?
No. The conversion runs entirely in your browser on your own device. Your BMP files are never sent to a server, so they stay private, and it works even on a slow connection once the page has loaded.
Is there a limit on how many BMP files I can convert?
No. Convert as many as you like, for free, without signing up. Very large batches are processed one after another so your browser stays responsive.
Will I lose quality converting to WebP?
WebP uses lossy compression, but at the default 90% quality the difference is practically invisible. Move the Quality slider up for the highest fidelity or down for smaller files.
Does it work on iPhone and Android?
Yes. It works in Safari, Chrome, Firefox and Edge on phones, tablets and computers. Nothing to install.