How JPEG Works: An Interactive Exploration of Lossy Compression

How JPEG works: Interactively explore JPEG's lossy compression methods

How JPEG Works: An Interactive Exploration of Lossy Compression

I explain the enduring success of the JPEG standard by breaking down its lossy compression techniques. We isolate brightness from color, discard less critical visual data based on human perception, and convert images to the frequency domain. This interactive guide lets you manipulate encoding steps to see exactly how file sizes shrink while preserving image quality.

It’s not the notes you play, it’s the notes you don’t play.

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2026-07-31