BMP to JPG, in your browser
BMP is the old Windows bitmap format. It stores every pixel uncompressed, so a single screenshot can be 5–25 MB. Converting to JPG typically cuts that by 90 % or more while looking the same, which makes the file small enough to email or upload. For screenshots with lots of text, PNG is also lossless and still far smaller than BMP – pick it in the “Convert to” box.
How to convert BMP to JPG
- Add the BMP files. Click the sheet or drag them in. You can add other formats in the same batch.
- Check the quality. 92 % is visually identical; 100 % for no recompression at all.
- Convert and download. Each file becomes a .jpg with the same name. Several files arrive as a ZIP.
Format comparison
| Format | Best for | Transparency | Opens everywhere? |
|---|---|---|---|
| JPG / JPEG | Photos, scans, anything a form asks for | No | Yes |
| PNG | Screenshots, logos, text, images that need transparency | Yes | Yes |
| WebP | Web pages – 25–35 % smaller than JPG | Yes | Browsers yes, some older apps no |
| AVIF | Web pages – smaller still | Yes | Modern browsers only |
| HEIC | iPhone camera | Yes | No – convert before sharing |
| ICO | Website favicons, Windows icons | Yes | Browsers and Windows |
| JFIF | Same data as JPG, odd extension from some downloads | No | Often not recognised |
| BMP | Old Windows apps; uncompressed and very large | Rarely | Mostly |
Need it smaller for a form? After converting, use reduce image size in KB. Need a PDF? Use image to PDF, which accepts BMP directly.
Frequently asked questions
Why is my BMP file so large?
BMP stores raw pixel data with no compression: width × height × 3 bytes. A 1920 × 1080 image is about 6 MB as BMP, a few hundred KB as JPG.
Should I choose JPG or PNG?
JPG for photos; PNG for screenshots, diagrams and text, where JPG can blur sharp edges. Both are much smaller than BMP.
Is the BMP file uploaded?
No. The image is read and converted by your browser on your own device. Nothing is sent to a server, and nothing is stored.
Can I convert several BMP files at once?
Yes. Add as many as you like; each becomes a JPG, and they download together as a ZIP.
Is there a size or daily limit?
No limits and no watermark. Very large images (over about 50 megapixels) may be slow on older phones because the work happens on your device.