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JPEG (Joint Photographic Experts Group)

JPEG (Joint Photographic Experts Group) is a lossy image format that sacrifices quality for smaller file sizes, perfect for websites that need to load quickly on mobile devices with limited data plans. It's the most popular image format on the web, despite being older than JavaScript and having more artifacts than Meta's roadmap.

How to use it in a sentence

  • "I tried using a JPEG for the hero image on the site, but the designer threw a fit and demanded a lossless WebP instead."

  • "Sure, you could use a JPEG for that profile pic, if you want it to look like it was taken with a potato during the MySpace era."

If you actually want to learn more...

  • Martin Fowler has an informal review of the Sony a6000 mirrorless camera which can shoot JPEG images: Sony a6000 with 16-70mm lens

  • For a blast from the past, check out Fowler's thoughts on the Canon S90, a pocketable camera with RAW + JPEG support that was all the rage in 2010: Canon S90

  • If you're curious about the tradeoffs between JPEG and RAW formats from a technical perspective, Paul Graham touches on it briefly in his article on Images

Note: the Developer Dictionary is in Beta. Please direct feedback to skye@statsig.com.

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