[Raphmedia]

> [1] https://getoptimage.com/benchmark

A score of 24/55 for TinyPNG and then 55/55 for their own service makes it look as if this article is an advertisement. Especially since TinyPNG gets better/very similar file size while staying visually lossless up to a point (images where it's nothing but a bunch of rainbow gradients are its weakness).

Remember that TinyPNG is optimized for web use where artifacts are tolerated. It was configured with that in mind. They test for images that are visually identical and won't get it from any images optimizer that is made for web usage.

Users only spend a few seconds looking at images that on web pages and the artifacts from optimizers are very minor. See: https://3perf.com/talks/web-perf-101/#images-compress-jpg-si...