Images conversion
Convert BMP to PNG
Updated Jul 2026
BMP is an old Windows image format that stores pictures uncompressed, which makes files large and hard to share. PNG compresses the same image losslessly, so you get a smaller file with no quality lost. To convert, open the BMP in a converter and export it as PNG, and doing that on your own computer means the image never has to leave your machine.
- Extension
- .bmp
- Type
- Images
- Typically
- Legacy Windows images
- Transparency
- None
- Extension
- .png
- Type
- Images
- Typically
- Screenshots, logos, UI assets
- Transparency
- Supported
Convert BMP to PNG on your own computer. Nothing uploads.
How to convert BMP to PNG
- Open Morphjet and drag in the BMP file, or a whole folder of them at once.
- Choose PNG as the output format.
- Convert. The PNGs are written locally next to your originals, and nothing leaves your machine.
BMP vs PNG: what actually changes
| BMP | PNG | |
|---|---|---|
| File size | Large, stored uncompressed | Much smaller, compressed |
| Compression | None, or very basic | Lossless compression built in |
| Quality | Lossless | Lossless, no change in quality |
| Transparency | No | Yes |
| Compatibility | Mostly Windows, uneven support elsewhere | Opens everywhere, web and desktop |
When to convert, and when not to
Convert BMP to PNG when you need to share, upload, or post an image online, or when you want a much smaller file without losing any image quality.
Keep the BMP if it's an old file you're archiving as-is or feeding into legacy Windows software that specifically expects that format.
Why not just use an online converter?
Old BMP screenshots and scans often sit around because there's no easy reason to touch them, but the moment you run one through an online converter, it's uploaded to a server you don't control. Converting on your own computer means the image is read, converted, and saved locally, with nothing sent anywhere.
Questions
Does converting BMP to PNG lose any quality?
No. Both formats are lossless, so the pixels come through exactly as they were. PNG just stores them more efficiently, using compression instead of leaving the data uncompressed.
Why are BMP files so much bigger than PNG?
BMP typically stores every pixel with little to no compression, so file size scales directly with image dimensions. PNG applies lossless compression, which usually shrinks the file a lot, especially for images with flat colors or repeated patterns like screenshots and logos.
Will PNG support transparency that my BMP didn't have?
PNG can hold transparency, but converting a BMP won't add it, since BMP files don't carry an alpha channel to begin with. You'd need to edit the image afterward if you want to make part of it transparent.
Can I convert BMP to PNG without uploading the file anywhere?
Yes. A desktop app like Morphjet converts the file right on your computer, so it never has to travel over the internet, even with your wifi off.
Why do I still have BMP files at all?
BMP is an old Windows format that some legacy tools, scanners, and screenshot utilities still default to. It's rarely the right choice for sharing today, which is why converting it to PNG is common.
Morphjet converts BMP, PNG, and 1,800+ other formats, all on your machine. Launching this July.