JPG to BMP Converter

JPG (or JPEG) is the format most cameras and phones save photos in by default — it uses lossy compression tuned for photographic detail.

JPEG (Joint Photographic Experts Group) works by discarding image detail the human eye is least likely to notice, which is why it can shrink a photo to a fraction of its uncompressed size while still looking sharp at normal viewing sizes. That efficiency, combined with support baked into virtually every camera, phone, browser, and operating system since the early 1990s, made it the default photo format for the web and for personal photo libraries alike. The tradeoff is that JPEG is lossy: every time a file is re-saved, a little more detail is discarded, and it has no support for transparency, so it's a poor fit for logos or graphics that need to sit on any background.

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.