PSA: Pathfinder Nexus has all the Player Core 2 rules online (free)
Heads up that ~~all~~ most of the PC2 classes, feats, etc\* are now online and accessible for free at Pathfinder Nexus (Demiplane).
[Quick link to Classes](https://app.demiplane.com/nexus/pathfinder2e/classes).
All the rules elements are available for free, just like on Archives of Nethys (you only have to pay for the books to read them as books, or to use the content in their character builder).
\*EDIT/UPDATE: it looks like not all the archetypes have been updated yet, which likely means other remaster content from PC2 is still in progress. Thanks to u/ajgilpin for catching this.