Drop images here
or browse, or paste from the clipboard
BMP and every other format · no size limit · never uploaded
Check it yourself
Your images never leave this tab.
Open your browser's developer tools, switch to the Network tab, and convert a file. You will see the encoder and its WebAssembly module load from this domain the first time, and then nothing — no upload, no image data, no request carrying your file anywhere. Turn off your Wi-Fi after the page loads and it still works.
BMP is barely a compressed format. In its common form it stores each pixel literally, which means file size depends on dimensions and nothing else — a 1920×1080 image occupies about 6MB whether it is a photograph or a solid white rectangle.
That makes this the most dramatic conversion on the site. The same image as lossless WebP is frequently under 500KB with no quality change whatsoever, and as lossy WebP often under 100KB.
If your BMP came from a screenshot or a scanner, choose Lossless. You will still see a reduction well above 90%, and the pixels stay exactly as they were.
Frequently asked questions
- How much smaller will a BMP get?
- A great deal. BMP typically stores raw uncompressed pixel data, so a 1920x1080 image is around 6MB regardless of content. The same image as lossless WebP is often under 500KB, and as lossy WebP frequently under 100KB. Savings above 95% are common.
- Should I use lossless for BMP?
- If the BMP came from a screenshot, a scan of a document, or any drawing tool, use Lossless — you will still get an enormous reduction with no quality change at all. If it is a photograph, lossy will be much smaller again.
- Why do I still have BMP files?
- BMP hangs on in Windows-native workflows: some scanner drivers, older screen-capture tools, medical and industrial imaging software, and Paint's default in certain versions. They are usually a step in a pipeline rather than something anyone chose deliberately.
- Does BMP transparency convert?
- 32-bit BMP files can carry an alpha channel, and where one is present it is preserved in the output. Most BMP files in circulation are 24-bit with no transparency at all.
Other conversions
Each converter opens with the right output format already selected, so the file you drop comes back in the format you came for.
Convert WebP to another format
Convert images to WebP
- Convert PNG to WebP Keep the transparency, drop most of the file size. Lossless mode is one click away if you need pixel-exact output.
- Convert JPG to WebP Typically 25-50% smaller than the same photo as a JPEG, at a quality most people cannot tell apart.
- Convert JPEG to WebP The same conversion as JPG — the two extensions are one format. Smaller files, same picture.
- Convert HEIC to WebP iPhone photos, converted in the browser. No app, no upload, and it works on iOS Safari where most converters do not.
- Convert AVIF to WebP Usually a compatibility move rather than a size one. WebP opens in more places than AVIF still does.
- Convert GIF to WebP Static GIFs convert cleanly and shrink hard. Animated GIFs convert to their first frame — and we will tell you when that happens.
- Convert TIFF to WebP Scans and print files, converted to something a browser can actually display.
- Convert SVG to WebP Turning vector into pixels. You choose the size, because a vector does not really have one.
Convert your images without handing them over.
No account, no upload, no limit on how many files you throw at it.
Start converting