BMP to JPG Converter

About BMP to JPG

Converts a BMP image to JPG with an adjustable quality setting, so a multi-megabyte bitmap becomes a photo-friendly file a fraction of the size. JPG is lossy: it trades a little detail for much smaller files, which suits photographs and scans far better than screenshots with sharp text. Choose it when size matters more than a perfect pixel-for-pixel copy.

How to use it

1. Drop a BMP file into the drop zone, or click to browse for a .bmp file.
2. Confirm the Source preview looks right and note the original size in the hint line.
3. Drag the Quality slider between Smaller file and Better quality. It runs from 10 to 100 and starts at 85.
4. Press Convert to JPG and wait for the Output panel to appear.
5. Press Download JPG, or use Reset and try a different quality value if the size is not what you wanted.

A 1920 x 1080 uncompressed capture

A 24-bit BMP, 1920 x 1080 pixels. Rows are 5,760 bytes (already a multiple of 4), so the size is 5,760 x 1080 + 54 = 6,220,854 bytes. Quality left at 85.

A 1920 x 1080 JPG written at quality 0.85. Any transparent area would be painted white first, since JPEG has no alpha channel.

When to use it

• Turning old digital-camera or scanner BMP output into files small enough to email or post.
• Reducing a folder of uncompressed captures before archiving them.
• Meeting a form that only accepts .jpg or .jpeg photo uploads.
• Producing a quick web preview from a bitmap while keeping the original untouched.

Questions about BMP to JPG

What quality value should I start with?

The default of 85 is a sensible balance for photos: artifacts are hard to see and files are small. Drop toward 60 for thumbnails, or push above 92 only if the JPG will be edited and saved again.

Why does text look fuzzy after converting?

JPEG compresses in 8 by 8 blocks and blurs sharp edges, which shows around text and line art. For screenshots of interfaces, converting the BMP to PNG instead avoids that halo.

Can a JPG keep transparency?

No. The tool fills the canvas with white before drawing the bitmap, so any transparent region comes out white instead of black or checkered.

Will converting twice make it worse?

Yes. Each lossy save discards a little more detail. Keep the BMP as your master and produce JPGs from it, rather than re-converting a JPG you already made.

Related tools

• JPG to BMPEasily convert JPG images to BMP with this easy-to-use converter.
• PNG to JPGEasily convert PNG images to JPG with this easy-to-use converter.
• PNG to BMPEasily convert PNG images to BMP with this easy-to-use converter.
• JPG to PNGEasily convert JPG images to PNG with this easy-to-use converter.
• JPG to ICOEasily convert JPG images to ICO with this easy-to-use converter.
• JPG to GIFEasily convert JPG images to GIF with this easy-to-use converter.