Convert bulky, uncompressed BMP files to compact WebP for the web or for sharing.
Convert between JPG, PNG and WebP — multiple files at once
🔒 100% private — files are processed in your browser and never uploaded to any server.
Often 90% or more, since BMP stores every pixel uncompressed.
A little, in exchange for a much smaller file; use PNG if you need lossless.
No software and no sign-up. The BMP-to-WEBP converter runs in your web browser, so it works on any device — Windows, Mac, Android or iPhone — straight from this page.
Yes. Drop in several images and they are converted together; a single file downloads directly, while a batch arrives as a ZIP.
No. Conversion happens entirely in your browser — your images never leave your device.
Convert bulky, uncompressed BMP files to compact WebP for the web or for sharing.
BMP — BMP. BMP is an old Windows bitmap format that stores images completely uncompressed. That means perfect quality but enormous files — often five to ten times larger than an equivalent JPG or PNG. BMP is rarely used on the modern web, so converting to a compressed format dramatically cuts the size with little or no visible loss.
WEBP — WebP. WebP is a modern format from Google that supports both lossy and lossless modes, transparency and even animation. At comparable quality it is typically 25–35% smaller than JPG and much smaller than PNG, which is why it is now the default for fast-loading websites. Every current browser displays it, though some older desktop apps and upload forms still do not accept it.
WebP dramatically reduces size compared with an uncompressed BMP.
Drop in as many BMP files as you need and they are converted together, arriving as a single ZIP. Because the work happens on your own device rather than on a server, a batch is limited only by your own memory, and there is no queue, no daily cap and no sign-up. Private or sensitive images stay entirely with you.
Need a different conversion, or want to process a batch? The full image converter handles JPG, PNG and WebP together, and you can pair it with the compressor if the result also needs to hit a size limit.
The same BMP reader feeds each conversion below, so whichever output you pick the file is still decoded on your own device.
If what you are starting from is not a BMP, open the converter that matches your own file instead.
Working through a pile of files? The full image converter handles a whole batch at once.