BMP to PNG Converter
Convert BMP to PNG in your browser for a lossless copy that keeps every pixel but takes far less space than the original bitmap.
PNG is lossless, so there is no quality setting. The output keeps every pixel of the original.
Your files are processed on your device and never sent to a server.
How to use BMP to PNG
Click "Choose images" and add up to 50 BMP files.
Click "Convert". PNG is lossless, so there is no quality setting.
Download the PNG files one at a time or as a ZIP.
When to use BMP to PNG
- Screenshots and diagrams. Text and sharp lines stay exactly as they are.
- Archiving old images. Save space without losing any detail.
- Graphics for editing. PNG works in every design and office app and supports transparency.
Limits and privacy
- Up to 50 images at once, 50MB each. BMP.
- Output is lossless. The file is usually much smaller than the BMP, but larger than a JPG would be.
- Images are decoded and re-encoded by your browser using the canvas API. Nothing is sent to a server, and closing the tab clears everything.
Frequently asked questions
Is BMP to PNG lossless?
Yes. PNG uses lossless compression, so every pixel of your BMP is kept exactly. The image looks identical, and the file is usually several times smaller because PNG compresses the data and BMP does not.
Why convert BMP to PNG?
BMP files are very large and are not accepted by many websites and apps. PNG keeps the same quality, is supported everywhere, and is much smaller. Choose PNG for screenshots, diagrams and graphics; choose BMP to JPG if you want the smallest file for a photo.
Can I convert many files?
Yes. You can add up to 50 BMP files at once, up to 50MB each, and download the PNGs together as a ZIP.
Related tools
Something not working with BMP to PNG? Report a problem.