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BMP to JPG

BMP files store every pixel raw, so they balloon in size. Make them light JPGs in a click, right on your computer.

Drop your .bmp files here

  • Files never leave your device
  • Unlimited · No signup

BMP to JPG in 3 steps

  1. Select the .bmp files from Paint, a scanner or an old device export.
  2. Press "Convert to JPG"; each bitmap is compressed to about 92% quality.
  3. Download the much smaller JPGs, zipped if there are several.

Why ConvertKoala?

  • Often 10× smaller or more

    A 1920 × 1080 BMP is around 6 MB. The same picture as a JPG is typically a few hundred kilobytes.

  • Emails go through

    Attachment limits of 20 to 25 MB fill up fast with BMPs. As JPGs, a whole folder fits in one message.

  • Websites accept it

    Most upload forms, social networks and chat apps reject .bmp or choke on its size. JPG is welcome everywhere.

  • No software install

    Skip opening each file in Paint to "Save as". Drop a batch here and it’s done in your browser.

Frequently asked questions

Why are BMP files so big?

BMP usually stores every pixel uncompressed: three bytes per pixel for colour. Multiply width by height by three and that’s the file size. JPG compresses the same picture by discarding detail your eye barely notices.

Where do BMP files come from?

Older versions of Windows Paint saved BMP by default, and many scanners, lab instruments, CNC machines, kiosks and legacy business programs still export it. Old game and software assets often use it too.

Will the JPG look worse?

For photos and scans, no visible difference at about 92% quality. Screenshots with small text or sharp lines can show slight fuzz around letters; for those, converting to PNG keeps them crisp while still saving space.

What about transparent BMPs?

A few 32-bit BMPs carry transparency. JPG can’t, so any transparent pixels are filled with white.

Can I make the JPG even smaller?

Yes. After converting, run it through Compress Image to hit an exact size in KB, or Resize Image to reduce the pixel dimensions.

Is anything uploaded?

No. Your browser decodes the BMP and writes the JPG on your own device. That matters when bitmaps come from medical, industrial or office systems.

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