What happens when you convert WebP to BMP
- The image is decoded and written as a 24-bit uncompressed bitmap.
- BMP cannot animate, so only the first frame of an animated WebP is kept.
How to convert WebP to BMP online
- Press "Choose WebP files" and select one or more files, or drag them onto the box. You can add files of any size your device can hold in memory.
- Adjust the settings if you need to. The output is lossless, so there is no quality setting to worry about.
- Press "Convert to BMP". Images convert in a second or two each.
- Save each BMP with its download button. Close the tab and every trace of the files is gone from memory.
Why convert WebP to BMP?
WebP files usually come from images served by websites to save bandwidth. People convert them to BMP because BMP is read by almost every Windows program, embedded display and old piece of software.
In short, WebP is good at what it was made for, and BMP is the more practical choice when the file has to open, upload or print somewhere else. WebP opens in all current browsers; older Photoshop and Windows Photo versions cannot open it, while BMP opens in browsers and every Windows image tool.
How to convert WebP to BMP on Windows, Mac, iPhone and Android
On Windows
Open this page in Chrome, Edge or Firefox, drag your WebP files in from File Explorer, and press Convert. Each BMP is saved to your Downloads folder. Paint can also re-save an image as BMP with Save as, provided Windows can open the WebP in the first place.
On a Mac
Safari, Chrome and Firefox all work. Drag the WebP files from Finder onto the drop zone and the BMP files land in Downloads.
On iPhone and iPad
Open the page in Safari and tap Choose WebP files. You can pick from Photos or from the Files app. The converted BMP appears in Files, in the Downloads folder; to put it in your photo library, open it there, tap Share and choose Save Image.
On Android
Open the page in Chrome, tap Choose WebP files and pick them from Files or your gallery. The BMP is saved to the Download folder, where any file manager can find it.
Best settings for WebP to BMP
A 24-bit BMP stores every pixel uncompressed, three bytes each, so size is simply width times height times three: a 12 megapixel photo becomes about 36 MB. Use the Maximum width setting if the program that needs the BMP does not need full resolution.
WebP vs BMP: the differences
| WebP | BMP | |
|---|---|---|
| Full name | WebP image | Bitmap image |
| Type | image | image |
| Created by | Microsoft | |
| First released | 2010 | 1990 |
| Compression | Lossy or lossless | Lossless |
| Transparency | Yes | Yes |
| Animation | Yes | No |
| Vector or raster | Raster | Raster |
| Colour | 24-bit colour plus an 8-bit alpha channel | up to 32-bit colour |
| In a browser | opens in all current browsers; older Photoshop and Windows Photo versions cannot open it | opens in browsers and every Windows image tool |
| Common uses | images served by websites to save bandwidth | Windows software, embedded displays and legacy tools |
| MIME type | image/webp | image/bmp |
About WebP and BMP files
What is a WebP file?
WebP can be lossy or lossless and still keep transparency, and at the same visual quality it usually lands 25 to 35 percent smaller than JPG. It is the reason so many images saved from websites turn out not to be JPGs.
What is a BMP file?
BMP usually stores pixels with no compression at all, so a 12 megapixel photo is about 36 MB. That size is the price of being readable by almost any program ever written for Windows.
WebP to BMP not working? Common problems
- Colours look slightly different. Browsers convert images to the standard sRGB colour space when they decode them, so wide-gamut and CMYK images can shift a little.
- A phone photo comes out upright even though it looked sideways elsewhere. That is correct: the rotation stored in the photo is applied during conversion, so the BMP is always the right way up.
- The file is bigger than expected. The BMP is usually larger, because it stores every pixel without compression losses, while the WebP was compressed lossily.
Convert WebP to BMP from the command line
If you work in a terminal, ImageMagick converts WebP to BMP in one line:
magick input.webp output.bmpTo convert every WebP in a folder at once, use magick mogrify -format bmp *.webp. The converter on this page does the same job without installing anything.
WebP to BMP converter FAQ
Will I lose quality converting WebP to BMP?
No further quality is lost, because BMP is written losslessly. Detail the WebP compression already removed does not come back.
Why is the BMP a different size from the WebP?
The BMP is usually larger, because it stores every pixel without compression losses, while the WebP was compressed lossily.
Are my WebP files uploaded anywhere?
No. The conversion runs inside this browser tab using your browser's own image decoder, so your files stay on your device. You can disconnect from the internet after the page has loaded and it still works.
Can I convert several WebP files to BMP at once?
Yes. Select or drop as many files as you like; they are converted one after another and each gets its own download button.
How do I open a BMP file?
BMP opens in browsers and every Windows image tool. BMP is common for Windows software, embedded displays and legacy tools.
Is this WebP to BMP converter free?
Yes. There is no sign-up, no watermark and no limit on how many files you convert. The site is paid for by advertising, and because conversions run on your device there is no server cost per file.
Can I convert WebP to BMP on my phone?
Yes. The converter works in Safari on iPhone and iPad and in Chrome on Android. Converted files are saved to the Downloads folder.