Free, no account, no watermark. Your BMP files are turned into JPG inside this browser tab — they are never uploaded to a server.
Nothing leaves your device
No account, no email
Free, and no watermark
Drop your files here
Tap to pick your photos
or
Choose files
Up to 30 files at a time · 60 MB per file
Higher quality means a larger file.
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Why convert BMP to JPG?
Almost always about size. BMP stores pixels raw, so a scan or a screenshot can easily run to 20 or 30 MB; the same image as JPG typically lands somewhere under a megabyte. Nothing visible is lost at sensible quality settings, and suddenly the file can be emailed.
JPG is what you pick when the file simply has to work: an upload form, a print order, an email attachment, a government portal. Nothing anywhere rejects a JPG.
How to convert BMP to JPG
Drop your BMP files into the box above, or click to pick them from your device.
Adjust the quality slider if you want a smaller file or a sharper result.
Hit convert. The work happens inside your browser, so it takes a second or two per image.
Download each JPG file, or grab them all in one ZIP.
About the formats
BMP — Windows Bitmap
BMP stores pixels essentially raw, with little or no compression at all. That makes it trivially simple for software to read and absurdly large to keep around: a photo that would be 2 MB as JPG can comfortably run past 20 MB as BMP. It survives mostly inside Windows software, scanner drivers and older industrial tools.
Strengths
Completely lossless, with no compression to undo
A dead-simple format that even very old software can read
No patents and no licensing questions attached
Limitations
Wildly larger than any modern format, often by ten times or more
No meaningful compression whatsoever
Effectively unsupported outside the Windows world
JPG — Joint Photographic Experts Group
JPEG has been the default photo format for more than thirty years, and that longevity is the entire point: there is no device, browser, printer or application that cannot open one. It discards detail your eye is unlikely to miss, which keeps files small — but it repeats that loss every single time you re-save.
Strengths
Opens on every device, browser, printer and photo lab in existence
Small files, with a quality dial you control
The safest possible thing to attach, upload or hand to someone else
Limitations
Lossy, and the damage accumulates with every re-save
No transparency — see-through areas are flattened onto a solid colour
Noticeably heavier than WebP or AVIF at matched quality
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Frequently asked questions
Are my photos uploaded anywhere?
No. The conversion runs entirely in your browser using WebAssembly and the Canvas API. Your images are never sent over the network, never touch a server, and are dropped from memory as soon as you close the tab.
Will I lose quality?
JPG is a lossy format, so some data is discarded. At the default quality of 85% the difference is invisible on screen for most photos. Raise the slider if you plan to print or edit the result.
Is there a limit or a cost?
It is free and there is no account. The only limits are practical: 30 files at a time and 60 MB per file, so that the tab does not run out of memory on a phone.
Can I convert several files at once?
Yes — drop in up to 30 files and they are processed one after another, then downloaded individually or as a single ZIP.
Does it work offline?
Once the page has loaded, yes. The converter itself needs no network connection, so you can drop the connection and keep converting.
Does it work on a phone?
Yes, on iOS and Android. Large batches are slower on a phone because the decoding happens on the device, so stick to smaller groups if things feel sluggish.