ContextCapsule: AI Chat Summarizer

Compress AI conversations into token-efficient briefings. Switch models instantly—no context lost. Works on ChatGPT, Claude & more.

ContextCapsule — AI Chat Summarizer & Context Exporter Switching AI tools mid-project? Hitting a context window limit? Tired of rebuilding your entire conversation from scratch? ContextCapsule compresses any AI chat into a clean, token-efficient briefing — ready to paste into any model in one click. No signup. No API key. No rate limits. What's New in v2.0.0 v2.0.0 removes the shared summarization backend entirely. Previously, all requests routed through a centralized API, which caused slowdowns under concurrent load. That bottleneck is gone. Summarization now runs locally — every user gets the same fast response regardless of traffic. How It Works Open ContextCapsule on any active AI chat tab, click Summarize, and get a dense context briefing you can paste directly into your next session. Most conversations compress by 85–95%, preserving every key decision, constraint, and reasoning thread. Features Conversation Summarizer — Extracts and compresses your active chat into a structured, token-optimized briefing. Token Savings Counter — See exact token counts before and after compression. Export as .txt — Download your full raw conversation or copy it to clipboard for backups, documentation, or version control. Smart DOM Extraction — Captures only the main chat thread; sidebars and UI chrome are excluded at the extraction layer. Stateless & Private — No conversation data is stored, logged, or transmitted. Your chats stay yours. Supported Platforms Works on all major browser-based AI assistants and chat interfaces. If it runs in a browser tab, ContextCapsule works on it. Who It's For Developers hitting token limits during long coding sessions Anyone doing cross-model handoffs — moving an active session between AI tools mid-project Prompt engineers managing multi-model workflows People who want to save and archive AI conversations locally