Images
Turn your JPG files into BMP in seconds. Everything happens in your browser: nothing is uploaded to any server.
Drag your files here
Or paste them with Ctrl+V. They never leave your device.
It has no transparency and loses a little quality each time it is edited and saved again. As a BMP old software and devices that know nothing about compression accept it.
JPG (or JPEG) compresses photos lossily: it drops details the eye barely notices so the file is much smaller.
Strengths: Every phone, computer, social network and app can open it, and it is ideal for photographs.
Limits: It has no transparency and loses a little quality each time it is edited and saved again.
BMP stores pixels uncompressed, as-is, the way Windows has since its early versions.
Strengths: Very old software and devices that know nothing about compression can read it.
Limits: It is huge: a photo in BMP takes ten times more space than in JPG.
No. The JPG to BMP conversion runs entirely in your browser, with code downloaded from this site and executed on your device. You can check it in the Network tab of the developer tools or by going offline after the page loads.
No: BMP stores the image losslessly, so it stays exactly as it was in the JPG (any loss already in the original cannot be recovered).
Your device’s memory sets the limit: on desktop, images up to about 100 megapixels; on mobile, up to 16.7. If an image is too large you are told before it starts.
Yes. Drop as many JPG files as you like: several are converted at the same time, depending on your processor cores, and when they finish you can download each BMP or all of them in a ZIP.