How do you actually remember useful things you find online?

I’ve realized that my biggest productivity problem isn't finding information.

It's finding it again.

I can spend 10 minutes finding the perfect tutorial, article, tool, or GitHub repo and think, “I'll come back to this later.”

Then two weeks later, I remember that the resource exists but have no idea where I found it.

I've tried bookmarks, browser history, saved posts, Notion, and just searching again.

I'm curious what other people do:

What's your current system for keeping track of useful things you discover online?

And more importantly — does it actually work when you need something months later?