buncha/image/bmp-to-png

BMP to PNG

BMP to PNG Converter

Convert legacy BMP files to PNG. Same lossless quality, dramatically smaller files, opens everywhere — modern design tools, mobile, web pipelines, anywhere a BMP gets rejected.

Bulk Image Converter

Convert images between JPG, PNG, WebP, AVIF, BMP, and HEIC. Up to 100 files at once. All processing happens in your browser — your files are never uploaded.

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Drop images here or click to select

Files are processed in your browser. Nothing uploaded.

Need more than a format change?

Open the result in the buncha editor

Crop & resize Filter, curves, HSL Watermark AI bg remove, magic erase

Why convert BMP to PNG?

BMP is the legacy Windows bitmap format — every pixel stored uncompressed, no metadata savvy, files often 5-10× larger than the equivalent PNG. It shows up in scanner exports, screenshots from very old apps, and as the output of certain Windows utilities. Modern web pipelines and design tools frequently reject BMP outright because of the file-size and compatibility tax.

PNG is the lossless replacement: every pixel survives the conversion intact, but the file is compressed (typically 80-95% smaller than the source BMP), supports transparency, and opens in absolutely every imaging tool ever made. There's no quality trade-off — you're just giving the file a usable container.

How to convert BMP to PNG

Drop your BMP files into the upload area above
Pick a quality preset if png supports it
Click Convert — every file processes locally on your device
Download a single file or a ZIP of the lot

Are my files uploaded anywhere?

No. Conversion runs in your browser using JavaScript and the Canvas API. Your files never leave your device. You can disconnect from the internet after this page loads and the tool will still work — try it and see.

Looking for something else? convert to JPG instead for photos and bigger size savings.

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About BMP to PNG

Convert BMP files to lossless PNG. Same quality, dramatically smaller files, opens everywhere. Free, runs in your browser.

Like every tool on Buncha, this one runs entirely in your browser. There's no upload, no log, no record of what you've pasted or generated. Close the tab and the data is gone.

↳ Have feedback or found a bug? hello@buncha.tools