As others have mentioned, the pool is webp, avif, and jpeg-xl.

If you’re building something today, webp likely has the best tradeoff of encoding speed, efficiency, and compatibility.

For pure tiering, here’s how I’d rank them:

*Efficiency:*

Webp: B tier

AVIF: A tier

JXL: S tier

*Encoding Speed:*

Webp: B tier

AVIF: D tier

JXL: A tier

*Compatibility*

Webp: A tier

AVIF: B tier

JXL: D tier