Convert BMP to JPG

Drop images here

or click to choose - JPG, PNG, WebP, GIF or BMP. Batch supported.

Your images are processed on your own device and never uploaded to a server.

How to convert BMP to JPG

  1. Drop your BMP file into the box above, or click it to browse your device. You can add several files at once.
  2. Leave the output format on JPG, or switch it if you changed your mind. Quality is set high by default; lower it only if you need a smaller file.
  3. Download the new JPG file. Each result shows the original size, the new size and the percentage saved.

BMP and JPG are not interchangeable - they were designed to solve different problems. BMP stores raw, uncompressed pixel data. Nothing is lost, but nothing is optimised either. JPG is the long-standing lossy photo format. It throws away detail the human eye is unlikely to notice, which is why it stays so small. Converting from BMP to JPG makes sense when you need the widest possible compatibility with old software, forms and email systems.

Neither format has an alpha channel, so transparency never enters the picture: the conversion only changes how the pixels are compressed. And because JPG is a lossy format, PixSquash lets you trade a little quality for a much smaller file.

Everything here runs locally. Your BMP file is decoded by your own browser and re-encoded by it too - nothing is ever uploaded to a server, which is what makes the tool both fast and private.

BMP vs JPG at a glance

BMPJPG
CompressionLosslessLossy
TransparencyNot supportedNot supported
Best foralmost nothing on the web - it is a legacy format from the Windows 3.x eraphotographs and complex, continuous-tone images where a small file matters more than pixel-perfect accuracy
Main drawbackfiles are enormous, often 10 to 50 times larger than the same image saved as WebPit has no transparency support and re-saving it repeatedly slowly degrades the picture

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Frequently asked questions

Does converting BMP to JPG reduce quality?
A little, by design. JPG is a lossy format, so some detail is discarded permanently. At PixSquash's default quality setting the difference is normally invisible, and the file becomes dramatically smaller. If you need a mathematically exact copy, convert to PNG instead.
Will transparency be preserved in the JPG file?
No. JPG has no alpha channel, so transparent pixels have to become something. PixSquash fills them with white. If you need transparency, convert to PNG or WebP instead.
Can I convert several BMP files at once?
Yes. Drop as many BMP files as you like onto the box above; PixSquash converts them all in the browser and gives you a separate download for each one.
Are my BMP files uploaded anywhere?
No. There is no upload step at all. The conversion happens on your own device using the Canvas API, so your images never leave your computer - which also means it works with sensitive or confidential files.