PNG to BMP Converter

PNG is a lossless image format built for sharp edges, flat colors, and transparency — think logos, screenshots, and UI graphics rather than photos.

PNG (Portable Network Graphics) was created in the mid-1990s as a free, patent-unencumbered replacement for GIF, and it inherited GIF's lossless approach while adding full 24-bit color and an alpha transparency channel. Because nothing is thrown away during compression, a PNG can be re-saved indefinitely without ever degrading — a real advantage for screenshots, diagrams, and anything with text or hard edges, where JPEG's compression tends to introduce visible smudging. The cost is file size: for photographic content, a PNG is typically several times larger than an equivalent JPEG, which is why most photo libraries still default to JPEG and reserve PNG for graphics.

BMP is an old Windows bitmap format that stores pixel data with little or no compression — simple, but large.

BMP dates back to the earliest versions of Microsoft Windows, where it was used as the native format for storing raw pixel grids with minimal processing overhead — appropriate for the modest CPUs of the era, but wasteful by modern standards. Because it stores pixels close to as-is, a BMP file opens instantly and never introduces compression artifacts, but it can be five to ten times larger than a JPEG of the same image. Today it mostly survives in legacy Windows software and a few specialized pipelines that specifically want uncompressed pixel data.