Show HN: Chrome extension filters AI spam by enforcing pre-2023 Google results

Technical details:

Client-side only: Injects date parameters into Google search queries Zero user data collection, no external servers

Works with all Google search operators

Near-zero performance impact (modifies query pre-load)

I built this after noticing how AI-generated content was overwhelming Google results for programming queries. Instead of complex AI detection, it uses a simple heuristic: most AI spam appeared after 2023, so filtering by date effectively surfaces established technical content.

Example: "React component patterns" normally returns recent AI-generated tutorials. With pre-2023 filtering, you get original resources from React's early developers and community.

Currently closed source (considering business options) but feedback welcome.