Image tools
BMP to JPG Converter
Shrink large BMP bitmaps from scanners and older Windows apps into small JPG files.
Convert your image
In your browserHow it works
- Choose a BMPDrop a .bmp file onto the page or pick it from your device.
- Set the qualityAround 85 percent keeps scans and photos looking right at a small size.
- Convert and downloadSave the JPG and compare its size with the original bitmap.
Supported formats
Anything your browser can open. Output is JPG, PNG or WebP.
JPGPNGWebPGIFAVIFBMP
About this tool
BMP files store every pixel without compression, so a single scan or screenshot from an older Windows program can weigh tens of megabytes. Most websites, email services and upload forms either reject BMP or struggle with the size. Converting to JPG typically shrinks the file to a small fraction of the original while it looks the same.
Pick a JPG quality; 85 percent suits scans and photos. Your browser does the conversion, so the bitmap is never uploaded, which also keeps it quick for large files up to 40 MB.
Questions people ask
How much smaller will the JPG be?
It depends on the picture, but photos and scans often end up 90 percent smaller or more, because BMP stores pixels uncompressed.
Can I keep transparency?
No. JPG cannot store transparency. Most BMP files have none anyway; any transparent areas are filled with the background colour you choose.
Should I use PNG instead?
For screenshots with sharp text or line drawings, PNG keeps edges crisp and is still far smaller than BMP. JPG is the better choice for photos and scans.
Know your formats
BMP vs JPG
| BMP | JPG | |
|---|---|---|
| Full name | Windows Bitmap | JPEG (Joint Photographic Experts Group) |
| Compression | Usually uncompressed | Lossy |
| Transparency | Rarely supported | No |
| Best for | Older Windows software and scanners | Photos, email and upload forms |
| Works with | Windows and most editors; websites rarely accept it, and files are large | Every device, app and website |
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