Free browser image tool
BMP to PNG Converter Online
Convert BMP images to PNG locally in your browser without uploading the file.
Setup: Upload the BMP file, choose the PNG preset, review quality where available, then convert and download the .png output.
Converts many image inputs to PNG, JPG, WEBP, GIF, BMP, TIFF, AVIF or a custom extension. First run downloads the FFmpeg engine; your image stays in the browser.
Your image is processed in your browser. No login is required.
What this page does
This focused workflow converts BMP to PNG to create a more practical lossless bitmap file for modern software and web workflows. BMP is commonly used for simple legacy bitmap compatibility, with very large files and limited web usefulness. PNG is useful for lossless pixels, sharp text and transparency, with larger photographic files.
How to use BMP to PNG Converter
- Upload a .bmp image.
- Choose PNG from the converter presets.
- Adjust quality when the PNG encoder provides that option, then run the conversion.
- Download the .png file and test it in the final application.
Good uses
- Legacy diagrams, screenshots and simple graphics
- Lossless replacement of large BMP files
- Preparing a bitmap for transparency-aware editing
How to verify the result
- Confirm the downloaded filename ends in .png.
- Compare width, height, color and orientation with the source.
- Inspect the result at full size and test it in the destination that requires PNG.
Known limitations
- PNG can retain transparency when the source and encoder provide it.
- The conversion creates one still PNG image.
- Converting to PNG does not create transparency that was absent from the BMP source.
Examples
- Convert an old BMP screenshot to PNG.
- Prepare a bitmap diagram for a presentation.
- Create a smaller lossless copy of a simple BMP graphic.