Convert BMP images to JPG locally - drastically smaller files for photos and sharing, no upload.
Running locally on your device ...
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Your files never left your device
No. Everything runs in your browser - your file never leaves your device. How this is verifiable
BMP is uncompressed and therefore very large - impractical for photos. JPG cuts the file size enormously and is opened everywhere; ideal for email attachments, websites and quickly sharing images.
The BMP is decoded locally and exported as JPG; transparent areas are filled with white. The quality slider controls the file size. Nothing is uploaded.
JPG works lossily and is tailored specifically to photos: its method discards image information the human eye barely perceives anyway, reaching tiny files with hardly visible loss. A photographic BMP often shrinks to a fraction of its original size. JPG is unsuitable, however, for screenshots, line art or text with hard edges - there the typical block artefacts show up quickly. Set the quality slider deliberately: a high value keeps detail, a low one saves maximum space for quick sharing.
| Input formats | BMP |
|---|---|
| Output format | JPG |
| Batch processing | Yes |
| Processing | Locally in your browser (JavaScript) |
| File upload | None |
Limitations: JPG is lossy and stores no transparency (transparent areas become white). For pixel-exact graphics with sharp edges, BMP to PNG is the better fit.
No. The conversion runs entirely in the browser - even in airplane mode.
For photos usually many times smaller, because BMP is uncompressed - depending on the quality setting. As a rule of thumb: an uncompressed 24-bit BMP needs exactly 3 bytes per pixel, so a 4000x3000-pixel photo needs about 36 MB uncompressed.
Use BMP to PNG for that; JPG has no transparency.
Yes, download individually or as a ZIP.