Substack Archive Search - Substack Post Indexer

Tracking since Apr 1, 2026.

Changelog

• May 21, 2026
  description

  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.
  
  Metadata Indexing: Automatically captures author names, tweet-IDs, and publication dates.
  
  Offline Access: Browse your indexed search results even when you don’t have an internet connection.
  
  🔒 Privacy-First Indexing Unlike web-based search tools, all indexing happens locally.
  
  No data is sent to a backend.
  
  Your search history stays on your machine.
  
  Compatible with custom Substack domains.
  
  ⚡ Optimized for Performance Built using IndexedDB, this extension can handle archives with thousands of posts without slowing down your browser. It’s the fastest way to turn a newsletter archive into a searchable library.

  Substack Archive Search lets you index, search, and browse entire Substack publications locally — with no backend and full privacy. Build your own offline, searchable archive of Substack posts and instantly find what you’re looking for.
  
  Whether you’re a researcher, writer, journalist, or power reader, this extension turns any Substack into a fast, personal knowledge base.
  
  🔍 Powerful Local Search
  - Instantly search posts by title.
  - Sort and filter large archives with pagination
  - Jump directly to any post in the publication’s history
  Pro users can unlock full-text search across entire articles.
  
  📂 Local Archive Indexing
  - Index thousands of Substack posts directly in your browser
  - Data is stored locally using IndexedDB
  Once indexed, your archive is available even offline.
  
  💎 Deep Search (Pro)
  Upgrade to Pro to enable deep indexing, which downloads and indexes the full text of every post.
  - Search inside article content
  - Find exact phrases, topics, and references
  - Ideal for long-running newsletters and research-heavy publications
  
  🔒 Privacy-First by Design
  - All data stays on your device
  - No cloud storage
  -No tracking
  - No data resale
  Your reading history and indexed content are never uploaded anywhere.
  
  ⚡ Fast & Efficient
  - Optimized local indexing and search
  - Built for large archives
  - Faster than Substack’s built-in search
  
  🎯 Perfect For
  - Researchers exploring long-running Substack archives
  - Writers collecting references and inspiration
  - Newsletter readers managing multiple subscriptions
  - Anyone who wants fast, offline access to Substack content
  
  🛠️ How It Works
  - Visit any Substack publication (including custom domains)
  - Open Substack Archive Search
  - Index the archive (shallow or deep)
  - Search and browse instantly
  
  🆓 Free vs Pro
  Free includes:
  - Shallow indexing (titles)
  - Local archive browsing
  - Basic search and sorting
  
  Pro unlocks:
  - Deep indexing with full-text search
  - Unlimited indexing
  - Advanced controls
  
  Stop scrolling endlessly through old posts.
  Explore Substack archives the smart way: locally, privately, and fast.
  
  Extension contains links to other useful free tools from the developer.

• May 21, 2026
  name

  Substack Archive Search - Offline Post Indexer

  Substack Archive Search - Substack Post Indexer

Permissions & access

Permissions

storageunlimitedStorageidentity

Host access

<all_urls>

Screenshots

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