Turn WebP files into BMP
This makes a BMP out of the WebP you already have. WebP gives you the same picture in a noticeably smaller file than JPG or PNG, usually a quarter to a third smaller. Your file never leaves your computer.
Need the other direction? Convert BMP to WebP
How to convert WebP to BMP
- 1 Drop your WebP .webp file onto the page, or click to browse for it.
- 2 Check the options. Nothing is thrown away on the way to BMP, so there is no quality dial to set.
- 3 Convert. The work happens on your own machine, so how long it takes depends on your computer and the file.
- 4 Download the BMP, or add more files and do the whole set in one go.
Why convert WebP to BMP
- Nothing is squeezed, so there is nothing to go wrong and nothing to unpack.
- Simple enough that almost any program can read it.
- Intermediate files in scientific or industrial pipelines.
- WebP: older desktop software and some print workflows still refuse it.
WebP compared with BMP
How the two formats differ on the things that decide whether a conversion is worth making.
| Property | WebP | BMP |
|---|---|---|
| File extension | .webp | .bmp |
| Compression | Lossy or lossless | Uncompressed |
| Animation | Yes | No |
| Colour depth | 8 bits per channel | 1, 4, 8, 16, 24 or 32 bits per pixel |
| Typical file size | Depends on mode | Largest |
| Browser support | Every browser | All current browsers |
| Introduced | 2010 | 1986 |
| Developed by | Microsoft | |
| Standard | Open | Proprietary |
Quality and what changes
BMP stores the same content under a different set of rules, so what matters here is compatibility rather than picture quality. Convert once from the best source you have rather than through a chain of intermediate files.
- Only the first frame of an animated WebP is kept.
- One BMP limitation to keep in mind: barely any support for colour management or file details.
Questions about WebP to BMP
What happens to an animated WebP?
BMP holds a single image, so only one frame survives, normally the first. If you need the motion, convert to a format that keeps it such as MP4, WebM or WebP rather than to BMP.
Is my WebP file uploaded anywhere?
No. The whole thing runs inside the browser tab you already have open. Your WebP is read straight from your own disk, converted on your machine and handed back as a BMP. Nothing is sent anywhere, nothing is stored and there is no account.
Is there a file size limit?
There is no server-side limit because no server sees the file. The real ceiling is your device memory, since the input and the output both have to fit in the tab. A few hundred megabytes is usually fine on a desktop machine and considerably less on a phone.
Can I convert several WebP files at once?
Yes. Add as many as you like and they are processed one after another, then offered as separate BMP downloads or as a single ZIP. Speed depends on your own processor rather than on a queue.
Does the converter work offline?
Yes, after the page has loaded once. The engine is cached by the browser, so you can disconnect, reload and keep converting. That falls out of doing the work locally rather than being a separate mode you switch on.