Substack Archive Search - Substack Post Indexer

Substack Archive Search is the ultimate discovery tool for power users. It builds a local, searchable index of any publication, allowing you to bypass Substack's limited native search and find exactly what you need in seconds.

Note: This extension is a search and discovery tool. It indexes archives to help you find posts; clicking a result will take you to the post on Substack.com to read.

🔍 Advanced Substack Search Engine. Native search can be slow and often misses older content. This extension creates a high-speed local database of a publication’s history.

Instant Filtering: Sort by date, title, or relevance.

Deep Indexing (Pro): Search the full-text content of every article, not just the headlines.

📂 Build a Personal Research Knowledge Base Perfect for journalists, academics, and researchers who need to track a writer’s specific mentions of topics over time.