BMP to PNG Converter
Convert BMP images to PNG. Your files stay on your device.
- Runs in your browser
- No sign-up
- No watermark
BMP files are uncompressed and often very large. PNG is lossless and keeps transparent areas. This tool turns BMP files into PNG with your browser's own image engine, so nothing is uploaded and there is no sign-up.
How to use BMP to PNG
- Choose one or more BMP files, or drop them onto the box.
- Conversion starts straight away.
- Download each PNG file, or all of them as a ZIP.
Frequently asked questions
Are my BMP files uploaded?
No. The conversion runs in your browser, so your files never leave your device.
Can I convert several BMP files at once?
Yes. Choose or drop several files and download the results one by one or together as a ZIP.
Will the image size change?
No. Width and height stay the same. Only the file format changes.
Which browsers does this work in?
Your browser decodes the BMP. Standard BMP files work. Rare variants, such as some 16-bit or compressed BMPs, may not open in every browser.
Is the PNG lossless?
The PNG itself is lossless. If the BMP was already compressed with loss, that earlier loss stays in the image.
Is it free?
Yes. There is no account, no watermark and no daily limit.