Dianoga

Optimizes images after they enter Sitecore's media cache, ensuring even dynamically resized images are compressed, addressing a core limitation in Sitecore's default processing where post-resizing output is unoptimized.

Automatically serves WebP, Avif, or JPEG XL based on browser Accept headers, reducing image sizes by 25-70% without manual intervention, as per the README's compression studies.

Runs optimization asynchronously after caching, minimizing frontend performance impact, with logs showing processing times of 20ms to a few seconds depending on image size.

Supports adding custom optimizers via the dianogaOptimize pipeline, allowing for additional format support or tailored optimization logic, as highlighted in the config files.