BMP to WebP
WEBConvert BMP images to WebP online — free, fast and private. Your files never leave your browser. Nothing is uploaded.
Add at least one image to continue.
100% private — images never leave your browser.
What is the BMP to WebP tool?
Convert BMP to WebP free in your browser — nothing uploaded, no account, no software. This is the biggest size jump in the whole converter: BMP stores every pixel raw and uncompressed, while WebP is a modern format built for the web, so a bulky bitmap becomes a genuinely tiny image that loads fast on any page. If you're moving old BMP assets — scans, screenshots, legacy Windows graphics — onto a website or into an app, this BMP to WebP converter does it in one step.
You stay in control of the output. The quality slider tunes the WebP encoder: 90% is visually very close to the original at a fraction of the size, and lower values shrink the file even further. WebP also supports transparency, unlike JPG, and every modern browser displays it natively. Because the whole conversion runs on your own device, there's no slow upload of a huge bitmap first — your browser decodes the BMP and encodes the WebP locally, and the file never leaves your machine.
The converter is completely free, with no sign-up, watermark or file caps. Convert several .bmp files at once and download them together as a ZIP. If you need broader compatibility instead of the smallest file, the BMP to PNG (lossless) and BMP to JPG converters are one click away in the conversions bar.
How to use the BMP to WebP
- Open the BMP to WebP converter — From and Convert to are preset to BMP → WebP.
- Click «Choose images» or drop your .bmp files into the drop zone — batches work too.
- Adjust the quality slider — 90% keeps detail; lower it for the smallest possible file.
- Click «Convert BMP → WebP» — the conversion runs locally in your browser.
- Download the WebP — one file downloads directly, several arrive as a single ZIP.
Frequently asked questions
How much smaller is WebP than BMP?
This pair gives the largest reduction in the converter — BMP is completely uncompressed while WebP uses modern, efficient compression, so the output is typically a small fraction of the original size. The exact saving depends on the image and your quality setting.
Is the conversion lossy or lossless?
The WebP encoder here is lossy, controlled by the quality slider — at 90% the difference from the original is very hard to see. If you need a pixel-exact copy, use the BMP to PNG converter instead; PNG is lossless.
WebP or JPG for converting BMP files — which is better?
WebP produces smaller files than JPG at comparable quality and supports transparency, so it wins for websites and apps. JPG opens in older software that may not know WebP — pick it when maximum compatibility matters.
Do browsers support WebP?
Yes — all current versions of Chrome, Safari, Firefox and Edge display WebP natively. Very old software may not, which is when the JPG or PNG converters are the safer choice.
Is my BMP file uploaded anywhere?
No. The entire conversion happens inside your browser, so there's no waiting for a huge bitmap to upload — and your image never leaves your device.
Is this converter free? Are there limits?
Completely free — no sign-up, no watermark, no file count caps. Only your device's memory limits how large a bitmap you can convert.