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BMP to PNG Converter

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Shrink huge BMP files to compact lossless PNGs in seconds. BMP is uncompressed and produces very large files; PNG keeps every pixel intact while dramatically reducing file size.

Drag an image here, paste from clipboard (Ctrl+V), or

EXIF metadata is removed automatically.

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How to use BMP to PNG

  1. Drag and drop or browse to select your BMP file.
  2. Set the output format to PNG.
  3. Click "Convert and Download" to save the compact lossless PNG.

What is BMP to PNG?

BMP (Bitmap) is one of the oldest raster image formats and stores pixel data with no compression, resulting in very large files — a 1920×1080 24-bit BMP is over 6 MB. PNG uses lossless compression that typically reduces that size by 60–80 % with absolutely no loss of image quality.

PNG is the natural modern replacement for BMP: it is lossless, supports transparency via an alpha channel, and is universally supported by web browsers, operating systems, and design tools. Converting BMP to PNG is a straightforward size reduction with zero downsides for most workflows.

The conversion runs entirely in your browser. No data is sent to a server, and the resulting PNG contains an exact pixel-for-pixel copy of your BMP.

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FAQ

How much smaller will the PNG be compared to the BMP?
Typically 60–80 % smaller for most images. The exact reduction depends on the image content — flat colour areas compress more aggressively than detailed photographs.
Is any image quality lost when converting BMP to PNG?
No. PNG is a lossless format, so the conversion is a perfect pixel-for-pixel copy of the BMP with no quality degradation.
Why is BMP so much larger than PNG?
BMP stores raw, uncompressed pixel data. PNG applies lossless compression (DEFLATE) that removes redundancy in the data without discarding any information, resulting in a much smaller file.

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