PNG → BMP
Convert PNG images to BMP – locally in your browser
Why PNG → BMP?
Convert PNG images to BMP – uncompressed and lossless. Directly in your browser.
Frequently Asked Questions
What is BMP?
BMP is an uncompressed bitmap format. Files are large but lossless.
Are my images safe?
Yes, conversion happens entirely in your browser.
About BMP
BMP (Bitmap) is the native image format of Windows, introduced in 1990 with Windows 3.0 as part of the GDI interface. BMP stores pixel data uncompressed or with simple RLE compression and supports color depths from 1 to 32 bits per pixel, with 24-bit RGB being the most common standard. The lack of efficient compression results in very large file sizes - an uncompressed 10-megapixel photo takes up about 30 MB. BMP does not support transparency, metadata, or animation, making it completely unsuitable for web use. The format is rarely used actively today but remains prevalent as an uncompressed intermediate format in Windows applications and embedded systems where simplicity is prioritized. The structure is straightforward - a header followed by raw pixel data - making BMP easy to read and write, which keeps it useful in image processing education. For all practical purposes, converting to PNG or WebP is recommended to save storage space.
About PNG
PNG (Portable Network Graphics) was released in 1996 as an open standard and developed as a patent-free alternative to GIF after Unisys demanded licensing fees for the LZW algorithm used in GIF in 1994. PNG uses lossless compression based on the Deflate algorithm and supports up to 16 bits per channel as well as full-color transparency through a dedicated alpha channel. The format is particularly suited for graphics with sharp edges, text, logos, and screenshots – anywhere JPEG would produce artifacts through its lossy compression. PNG does not support animation; this gap is filled by the unofficial APNG format, which is supported by most browsers. The interlaced variant (Adam7) enables progressive loading where a coarse preview becomes visible even with minimal data transferred. PNG is the de facto standard for lossless web graphics and is supported by all browsers, operating systems, and image editing programs. For photography, however, PNG is inefficient since file sizes are significantly larger compared to JPEG or WebP, which is why PNG is primarily used for graphics and screenshots.
Why convert PNG → BMP?
PNG is a lossless raster format with full alpha transparency support, a web standard since 1996. It's excellent for screenshots, diagrams, and graphics with text elements. The downside: PNG files are significantly larger than modern compressed formats — often 3-5x larger than WebP at equivalent visual quality. Converting to BMP makes sense when you need to reduce file size for web or mobile use, require a format with lossy compression for photos, or want to use images in a system with limited PNG support. Switching to BMP noticeably reduces load times for web use.