Is it a fork of LibRedirect?

No, written from scratch in manifest v3 with minimal permissions

Nice. What are the benefits over LibRedirect?

Does PreDirect also have instance discovery built in along with the ability to ping services?

Libredirect is a manifest v2 extension (can’t be published on chrome store) and has permissions for all_urls, predirect is a manifest v3 extension and only has permissions for necessary domains

So basically tighter permissions and using newer APIs. As for the Chrome stuff, as a Firefox user posting in a Firefox community, it’s of little consequence to me. But I look forward to trying out this extension.

Edit: Tried it and it kinda falls over at the first hurdle. I installed it and then tried to follow links to Tiktok and Instagram only to end up on the official sites.

Also the UI is kinda unstyled. It feels like when you first learn Java.

There is an onboarding step for permissions in firefox version(due to more restrictions in manifest v3 than even chrome),so you need to grant permissions, unstyled UI is intended but I will add style with a minimal ui css framework in near future

The only permission it asks for is blocking.