Threads Content Lab turns your past performance into better Threads posts. Instead of generic AI post generators, it analyzes your actual views, likes, and comments to craft data-driven content optimized for reach and engagement. Privacy-First: Works with a local folder via File System Access API. Your data stays on your machine. BYOK & Free AI: Use your Google Gemini or OpenRouter key with zero subscriptions. Single HTML File: No install, setup, or monthly fees. Just open and create!