Convert BMP to WebP
Ethical Tube's free BMP to WebP converter turns BMP images into WebP, Google's compact image format for the web. It runs entirely in your browser, so your images are never uploaded, and it's free with no sign-up or watermark.
Files are converted on your device and never uploaded.
- Price
- Free
- Uploads
- None, it runs on your device
- Sign-up
- Not needed
- Batch
- Unlimited files
- Output
- WebP, quality you choose
- Install
- Nothing to install
How it works
How to convert BMP to WebP
Add your BMP files
Drop BMP files onto the converter, click to choose them, or paste from the clipboard. Add as many as you like.
Check the settings
WebP is already selected. Adjust the quality or maximum size if you like, or keep the defaults.
Download your WebP images
Each file gets its own download button as soon as it's ready. Download all saves everything in one ZIP file.
The formats
BMP and WebP at a glance
What is a BMP file?
BMP is the uncompressed bitmap format from early versions of Windows. It stores every pixel as is, so quality is perfect but files are large, often ten times the size of a PNG. Today it's mostly needed by older software, embedded devices, and some printers and label makers. It opens in Windows Paint and Photos, macOS Preview, browsers, and nearly every image editor.
What is a WebP file?
WebP is an image format from Google that makes files roughly 25 to 35 percent smaller than JPG or PNG at similar quality. It supports lossy and lossless compression, transparency, and animation. Websites use it to load faster, but some older apps and upload forms still can't open it. It opens in all current browsers, Windows 10 and 11 Photos, macOS Preview (Big Sur and later), iPhone (iOS 14 and later), Android, Photoshop (2022 and later), and GIMP.
Good to know
What changes when you convert BMP to WebP
- WebP is lossy, so the image is re-encoded at the quality you choose. At the default of 90%, the difference is hard to see.
- Metadata such as the camera model, date, and GPS location isn't copied to the new file, so you don't share your location by accident.
- Very large images, around 100 megapixels or more, can exceed what the browser allows, especially on phones.
FAQ
Questions, answered
Is this BMP to WebP converter free?
Yes. It's completely free, with no sign-up, no watermark, and no limit on how many files you convert. It costs Ethical Tube nothing to run, because the conversion happens on your own device rather than on a server.
Are my files uploaded anywhere?
No. The conversion runs inside your browser with the browser's built-in image codecs plus small WebAssembly encoders, so your files never leave your device. Once the page has loaded, it even works offline.
Does converting BMP to WebP lose quality?
A little, because WebP is a lossy format. At the default quality of 90% the difference is hard to see. Raise the quality toward 100% to keep more detail, or lower it to make smaller files.
Can I convert several BMP files at once?
Yes. Add as many as you like. They're converted one after another, and you can download each WebP file as soon as it's ready or all of them in one ZIP file.
Does it work on iPhone, Android, Mac, and Windows?
Yes. It works in Chrome, Edge, Firefox, and Safari, on computers, iPhones, and Android phones.
What can open a WebP file?
All current browsers, Windows 10 and 11 Photos, macOS Preview (Big Sur and later), iPhone (iOS 14 and later), Android, Photoshop (2022 and later), and GIMP.
Is there a file size limit?
There's no upload limit because nothing is uploaded. The practical limit is your device's memory: everyday files are fine, and most computers handle images up to about 100 megapixels.
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