BMP to PNG Converter

Convert BMP files to PNG in your browser, without uploading or signing up.

How to use

1. Turn BMP graphics into PNG files for websites and sharing.
2. Select your files. Adjust image quality or the background color when supported. Press Convert, then download each result or the entire ZIP.

About these formats

BMP is an older raster format, often uncompressed, that can be larger than PNG or JPEG. PNG preserves pixel detail and alpha transparency using lossless compression. PNG uses lossless compression and often reduces the size of uncompressed BMP images.

Browser limitations

The selected browser must decode BMP and encode PNG. Large images may exceed available device memory.

Frequently asked questions

Are files uploaded?

No. Image decoding and re-encoding run locally in your browser.

Can I convert multiple images?

Yes. Add multiple files and download all finished results in one ZIP.

Will the quality change?

PNG export stores the decoded pixels losslessly, but does not restore details lost earlier.

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