BMP to WebP converter
BMP writes raw uncompressed pixels straight to disk, so a photo that would be 2 MB as a JPG arrives as 25 MB. Converting is almost always worth it, and it happens here in your browser.
BMP
ToDrop BMP files hereor choose files
Converted files don’t keep EXIF or color profile data.
Accepts .bmp files.
Runs in your browser. Your files never leave your device.
How to convert a BMP
- Add your BMP filesDrag them in or pick them from disk. BMP files are large, so a batch may take a moment to read.
- Choose an output formatPNG for a lossless copy that is still dramatically smaller, JPG or WebP when you want the file as small as it will go.
- Convert and downloadConversion runs on your machine, so even very large BMP files never get uploaded anywhere. Batches download as a ZIP.
Questions about converting BMP
Because BMP applies no compression at all in its common form — it stores three or four bytes for every single pixel, exactly as they sit in memory. A 4000 x 3000 photo is around 36 MB before you have added anything. Every other format on this page compresses, which is why the saving is so dramatic.
Not a pixel. PNG is lossless, so the image is reproduced exactly while typically landing at a fraction of the size. If you want a faithful archive copy of a BMP, PNG is the format to choose; pick JPG or WebP only when you are willing to trade some detail for a much smaller file.
No browser can write BMP from a canvas, and this converter only offers formats it can genuinely produce. Offering BMP as an output would mean handing you a PNG with the wrong extension, which would break the moment anything tried to read it.
One file is free. Four hundred, on brand, in every size, is what we do.
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