BMP Image Converter
Convert uncompressed 24/32-bit BMP to PNG, or create a 24-bit BMP from a still PNG, JPEG or WebP image.
Your input is sent to this site only after you choose Convert on server. The conversion runs for this request and no history is saved. Upload up to 4 MiB combined; Office files have a 2 MiB limit.
Choose your file
Choose a file or load the example to see how the converter works.
Choose your options
The defaults work for most files. Change a setting only when you need to.
How to use BMP Image Converter
- Load the working example or provide your own input.
- Review the format options, then select Convert on server to process the input.
- Check the result and download the output file.
What this tool does
Move a classic bitmap image into a common web format, or prepare a BMP for software that expects that file type. BMP-to-PNG mode reads uncompressed Windows bitmap rows with either bottom-up or top-down storage. The reverse mode creates a standard 24-bit BMP with padded rows and a white background for transparent source pixels.
Supported formats and limits
Supported BMP input uses a Windows DIB header, BI_RGB compression and 24 or 32 bits per pixel. Indexed palettes, bitfields, RLE and other BMP variants are rejected. The reserved fourth byte in BI_RGB 32-bit files is treated as opaque rather than interpreted as alpha. Source images and output are limited to 4 MiB and 16 million pixels. BMP files are uncompressed and can be much larger than their PNG or JPEG sources.
What should I check before using the result?
Supported BMP input uses a Windows DIB header, BI_RGB compression and 24 or 32 bits per pixel.
Is input uploaded?
This tool sends input to this site’s conversion API after you select Convert on server. Files use bounded workers and, when needed, private temporary folders deleted after processing or cancellation. No conversion history is saved. The converter does not upload files to a third-party conversion service.