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OmNomDeBonBon t1_ixuie7b wrote

Reply to comment by strangway in ELI5: In recent years, new formats like webp and jfif have started popping up. However, if I rename them to gif or jpeg, they still work. How can it be that renaming the extension doesn't ruin the image format? Why do they even exist then? by Luthemplaer

It died a quick death. Virtually nothing used JPEG-2000 when it was new, and nothing uses it now except to deliver backwards compatibility with 20-year-old images.

JPEG is still the principal image format in 2022, with PNG a distant second, and webp (Google's format) being used for perhaps 0.00000001% of images.

For animated image files, there's a transition happening from GIF to GIFV (GIF Video, aka mp4). There's also APNG (animated PNG) but that's used 0.00000001% of the time.

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