BMP is a common format worth converting when a tool like this doesn’t accept it directly. Converting to WEBP happens instantly, right in your browser. WEBP typically produces 25–35% smaller files than JPG or PNG at similar visual quality.
BMP files are common from older Windows software and some screenshot tools, but they’re rarely the right format to share or publish. Converting to WEBP gets you a strong balance of small file size and high visual quality for the web — done instantly, for free, without installing anything or creating an account.
Quick verdict: Pick BMP for legacy Windows applications, WEBP for modern web images, faster page loads.
.bmp.webpimage/bmpimage/webpConverting your BMP file to WEBP happens in three steps, entirely on your device: your browser reads the BMP file into memory, decodes and re-encodes it as WEBP using built-in browser technology (Canvas and WebAssembly), and hands you the finished file as a direct download.
At no point does the file get sent to a server. There’s no upload step to intercept, no account that could be breached, and nothing stored after you close the tab — the conversion simply couldn’t leak your file even if something went wrong, because it never left your browser in the first place.
WEBP typically produces 25–35% smaller files than JPG or PNG at similar visual quality.
We decode the original BMP data and re-encode it at high quality, so any difference is minimal to the eye for normal use.
Drop your BMP file into the box above and press Convert — the WEBP download is ready in seconds, with no account, no watermark, and no limit on how many files you convert.
Yes — drop in as many files as you need, convert them all in one go, and download everything together as a single ZIP instead of clicking download on each file individually.