Convert BMP to JPEG
Drop BMP files and download much smaller JPEGs at the same dimensions. An uncompressed bitmap is heavy and often rejected by upload forms; JPEG’s lossy compression is built for photographs and cuts the size sharply.
JPEG output uses a high-quality setting. Photographs and camera-like images convert cleanly. Flat color, text, and hard edges can show artifacts, so for those, PNG is the better target.
Transparency becomes white
JPEG cannot store transparency, so any transparent pixels in the BMP are flattened onto a solid white background. Keep PNG if the image needs an alpha channel.
Decoding note
Standard BMP files decode directly in the browser. Older or uncommon BMP variants are handled by a built-in decoder that loads once per tab the first time you convert one.
Batch and privacy
Add multiple files, convert, and use Download all as ZIP for the whole set. Conversion runs in your browser through Web Workers, in parallel; nothing is uploaded, and metadata is dropped when the image is re-encoded.