Convert BMP to JPG
To convert BMP to JPG, drop your .bmp file into the converter on this page and press Convert to JPG. Your browser decodes the bitmap to raw pixels and re-encodes them as a JPG on your own device, so no upload ever happens.
Runs in your browser. Your file never leaves your device.Drop your BMP hereChoose a BMP to convert
It becomes a JPG right in your browser, up to 100 MB
Your file never leaves your device
Works in airplane mode. See the proof
Limits, published exactly
| Where it runs | In your browser. The file never leaves your device. |
|---|---|
| Free conversions | Unlimited. No account, no ads, no queue, no watermark. |
| Max file size, free | 100 MB |
Why convert BMP to JPG?
BMP is an ancient, uncompressed Windows bitmap, and that is the whole problem: it stores every pixel raw, so a single screenshot or scan can balloon to tens of megabytes that no email, upload form or web page wants to carry. You usually end up with one from old Windows software, a Paint export, a scanner or a legacy line-of-business app that still saves BMP by default. Converting to JPG applies real compression and collapses that bloat dramatically while keeping the image perfectly usable, and JPG is the one format every device and website accepts.
What is BMP?
BMP is the Windows bitmap format from 1987: pixels stored essentially raw, usually with no compression at all. Ancient tooling, scanners, screenshots from legacy systems and some scientific software still emit it, and almost everything can read it, but the files are enormous for what they contain. Converting a BMP loses nothing, because there was never any lossy compression inside to begin with.
What is JPG?
JPG (or JPEG, for the Joint Photographic Experts Group that standardized it in 1992) is the most widely supported image format ever shipped. It uses lossy DCT compression tuned for photographs, which buys small files at the cost of discarding fine detail, and it has no transparency support. Practically everything that can open an image can open a JPG.
Quality and what to expect
This trades an uncompressed bitmap for a lossy JPG at the encoder's default quality, so the size reduction is large, often huge, but it is a one-way step that discards some detail and can introduce faint ringing on hard edges or text. Because BMP is essentially raw pixels, the original was visually pristine, so any softening you notice comes entirely from the JPG encode. BMP is typically opaque, so there is rarely any transparency at stake to lose. Metadata is not carried into the output, and the JPG cannot be losslessly turned back into the original bitmap.
BMP to JPG FAQ
Why is my BMP file so enormous?
BMP stores every pixel uncompressed, with no space-saving at all, so file size scales straight with resolution. A large screen capture or scan can easily reach tens of megabytes. JPG applies real compression, which is exactly why converting shrinks it so sharply.
How much smaller will the JPG be?
Typically dramatic, often a 90% or larger reduction for photographic or scanned content, because you are going from fully uncompressed pixels to a lossy codec. Flat-color graphics compress even harder. The exact ratio depends on the image.
Will I lose image quality?
Some, yes. JPG is lossy, so the encode discards fine detail and may add subtle ringing near sharp edges or text. For normal viewing the result looks essentially the same, but it is not pixel-identical to the bitmap and the change cannot be reversed.
Does my BMP get sent to a server?
It does not. The bitmap is decoded and re-encoded by your browser, in a worker thread on your own processor. The file stays on your machine throughout, which you can confirm in the developer tools network tab while converting.