BMP to JPG Converter

Convert BMP bitmaps to JPG for free in your browser. BMP stores images essentially uncompressed, so this conversion routinely cuts file size by 90% or more with no visible difference.

Why BMP files are enormous

BMP stores raw pixel values with little or no compression. Every pixel occupies three or four bytes regardless of what the image contains, so the size is pure arithmetic: width × height × bytes per pixel.

Reductions of 95% or more are routine, and for photographic content there is no visible difference at quality 85.

Where BMPs come from

BMP is a Microsoft format from the late 1980s and is essentially obsolete, but it still turns up: old scanner software, legacy industrial and medical systems, Windows Paint saves, screen capture utilities from another era, and exports from ageing enterprise applications. If you have inherited a folder of them, batch conversion is the fastest way to reclaim the disk space.

How to convert

1. Drag your BMP file into the box above, or click to browse. Multiple files at once is fine.
2. Confirm JPG is selected as the output format.
3. Adjust the quality slider if the format is lossy.
4. Click Convert, then download the JPG files individually or as a single ZIP.

How much smaller will the JPG be?

Typically 90–97% smaller. An uncompressed bitmap has enormous redundancy that JPG removes almost entirely.

Will the quality drop noticeably?

Not on photographic content at quality 85 or above. On screenshots, text and line art you will see artifacts around the edges — use PNG for those instead.

Should I use JPG or PNG?

JPG for photographs. PNG for screenshots, diagrams, logos and anything with flat colour and hard edges — it is lossless and often smaller than JPG on that kind of content.

Can I convert a folder of BMPs at once?

Yes. Add them all, convert, and download as a ZIP. Since processing is local, there is no upload time even for very large bitmaps.