Convert BMP to JPG
Your files are processed on your device. We never upload them.
How to convert BMP to JPG
- 01A ▸Choose your BMP files, or drop them on the page.
- 02A ▸Pick a quality.
- 03A ▸Select Convert to JPG, then download each JPG, or all of them as a zip.
About BMP to JPG
Where BMP files come from
BMP files come from Windows Paint, older scanners and cameras, industrial equipment, and legacy software. They are uncompressed, so they are huge, and many upload forms and websites refuse them. JPG is a fraction of the size and opens everywhere.
What changes
- The file shrinks dramatically, typically by 90 percent or more for photos.
- JPG compresses with loss; at High the difference is hard to see on photos, but sharp text and lines can show faint smudges.
- Any transparency in a 32-bit BMP is filled with white.
- Colours stay the same; BMP files have no metadata worth keeping.
Measured
Our 12-megapixel sample photo (4032 by 3024) saved as a 24-bit BMP, converted at High in Chrome on a laptop. Phone timings are still to be measured.
| BMP file | 35 MB |
|---|---|
| JPG file | 1.5 MB |
| Time in Chrome (laptop) | 0.3 seconds |
In your browser
Every current browser reads BMP and writes JPG itself, so nothing extra is downloaded.
Limits
- Very large bitmaps may be reduced to about 16 megapixels on iPhones. The result says so.
- Rare compressed and OS/2 bitmaps may not open; the result says so for that file.
Other options
- BMP to PNG: a lossless copy for screenshots, diagrams, and line art.
- Compress image: reach a target size, such as under 1 MB.
- Image to PDF on Open PDF Toolkit: put scanned bitmaps into one PDF.
Questions
Why are BMP files so big?
BMP stores every pixel uncompressed, about 3 bytes each. A 12-megapixel BMP is around 35 MB; as a JPG it was 1.5 MB in our test.
Are my images uploaded?
No. Your files are processed on your device. We never upload them.
Does BMP to JPG lose quality?
Slightly, because JPG compresses with loss. At High or Best it is hard to see on photos. For screenshots and line art with sharp edges, BMP to PNG keeps every pixel.
Which BMP files work?
Standard Windows bitmaps at 1, 4, 8, 16, 24, and 32 bits, the kinds Paint, scanners, and older programs save. Your browser reads them.
Can I convert many at once?
Yes. Choose or drop as many as you like and download them all as one zip.