Convert BMP to JPEG
Convert BMP to JPEG right in your browser — free, private, nothing is uploaded. Small files for photos — set quality 1–100.
Convert BMP to JPEG →Free · Private — runs in your browser, nothing is uploaded
BMP is the old Windows bitmap: raw uncompressed pixels with essentially no size optimization. It opens everywhere on Windows but wastes space — which is usually why people convert it.
JPEG is the default format for photographs — lossy compression tuned for natural images keeps files small, and support is universal. It has no alpha channel, so transparency is always flattened.
Converting BMP to JPEG is almost always about size: JPEG's photo-tuned lossy compression produces far smaller files than BMP for photographic content, and every app on earth opens the result.
BMP vs JPEG
| BMP | JPEG | |
|---|---|---|
| Compression | lossless — nothing discarded | lossy — some detail traded for size |
| Codec / container | uncompressed Windows bitmap | lossy DCT-compressed JPEG |
| Typical file size | very large — no compression at all | small — the quality knob trades size against artifacts |
| Best for | legacy Windows software and raw exports | photos and everyday web images |
| Strength | dead simple and lossless | small files for photos; opens absolutely everywhere |
| Watch out for | uncompressed — enormous files for what they show | no transparency; visible artifacts at low quality settings |
| Compatibility | universal on Windows; most other platforms too | universal |
| Transparency | effectively none in common BMP files | no — transparent areas are flattened |
| Animation | no | no |
How the conversion works
- Choose your BMP image. The button above opens the converter with JPEG already selected as the target format.
- Set the quality from 1 to 100 (default 85) — higher keeps more detail, lower shrinks the file.
- Run the conversion and download the JPEG image. Everything happens locally — ffmpeg compiled to WebAssembly runs in your browser tab, your image is never uploaded, and the page keeps working offline once it has loaded.
What to expect
This step is lossy. JPEG discards some detail to hit its file sizes — at the default quality of 85 that's hard to see on photos, but sharp-edged graphics and text show artifacts sooner. Raise the quality toward 100 for critical images, and keep the BMP original in case you need to re-export.
FAQ
How much quality do I lose converting BMP to JPEG?
At the default quality of 85 the difference is hard to spot on photos. Graphics with sharp edges and text show lossy artifacts sooner — try quality 90+ there, or stick with a lossless format. Your BMP original is untouched either way.
How much smaller will the JPEG be than my BMP?
Usually dramatically smaller: BMP files carry little to no compression, while JPEG at the default quality of 85 compresses photographic content to a small fraction of that.
Is my BMP image uploaded when converting to JPEG?
No. The conversion runs entirely in your browser with ffmpeg compiled to WebAssembly — your image never leaves your device, and the page keeps working offline once it has loaded.