What I built: A Chrome extension that captures your ChatGPT conversations (and 8 other AI platforms) into portable JSON/JSONL files you can upload anywhere.

The Problem This Solves

You spend hours crafting the perfect conversation in ChatGPT. Then you want to:

• Continue it in Claude (better for coding)

• Share it with a teammate who uses Gemini

• Keep a backup in case ChatGPT goes down

• Switch to a local model for privacy

Right now? You're stuck. ChatGPT locks your context in their ecosystem.

How It Works

1. One-click export — Click the LISA button while in ChatGPT

2. Get a tiny JSON file — Your 60,000-word conversation becomes ~700 words (80:1 compression)

3. Upload anywhere — Drop it in Claude, Gemini, Grok, Mistral, DeepSeek, Copilot, or Perplexity

4. Say: "Read this LISA JSON and continue our conversation"

5. Done — Full context restored, conversation continues

Why Structured JSON?

When AI reads raw text, it wastes compute guessing:

• "Fix it" → What's "it"?

• "Do this later" → When?

• "The file we discussed" → Which file?

LISA pre-resolves these ambiguities by translating your conversation into structured data:

Instead of this:

"Hey, can you fix the authentication bug we talked about earlier?"

AI gets this:

json

{
  "semantic_anchors": [{
    "id": "SA001",
    "topic": "Authentication bug fix",
    "priority": "high",
    "context": "Previously discussed login issue"
  }],
  "action_vectors": [{
    "action": "Debug auth module",
    "status": "pending"
  }]
}

Result: 95% of AI's compute goes to solving your problem, not figuring out what you meant.

Real Compression Examples

• 302-message coding session: 645 KB → 6.45 KB (100:1)

• 60,000-word discussion: ~700 words (86:1)

• Tested across Claude, GPT-4, Gemini — >95% fidelity

Supported Platforms (9 total)

✅ ChatGPT (obviously) ✅ Claude + Claude Code ✅ Gemini ✅ Grok ✅ Mistral AI ✅ DeepSeek ✅ Microsoft Copilot ✅ Perplexity 🔜 Ollama (local models)

Privacy

• 100% local processing — Your conversations never touch our servers

• No tracking — We don't see your data because we never receive it

• Open JSON format — No vendor lock-in, you own your data

• Optional cloud sync — Only if you explicitly enable it

Free Tier

• 5 exports per day (across all 9 platforms)

• Local library storage

• Full semantic compression

• All features except cryptographic verification

Technical Specs

• Chrome extension (Manifest V3)

• Works on chatgpt.com automatically

• SHA-256 hashing for audit trails

• Right-click selection export

• Git-style version history

Use Cases I've Seen

Developers:

• Start debugging in ChatGPT → finish in Claude (better for code)

• Keep coding session backups

• Share project context with teammates using different AI

Students:

• Study sessions portable across platforms

• Keep personal knowledge library

• Never lose important conversations

Anyone leaving ChatGPT:

• Take your conversation history with you

• Your data is yours

Why I Built This

I'm a professional translator (25 years). I learned that meaning is fragile — especially across boundaries.

When I started using AI heavily, I saw the same problem: your conversations are trapped in silos, and AI wastes compute re-parsing ambiguities every single time.

LISA treats context transfer as a translation problem, not just compression. Just like translating French to English isn't about swapping words 1:1 — it's about stabilizing meaning — LISA stabilizes meaning across the human-AI boundary.

Limitations

• ChatGPT's HTML structure changes occasionally (we update the parser)

• Free tier has daily limits (5 exports/day)

• Works best on desktop Chrome (mobile support coming)

Chrome Web Store: Search "LISA Core" or check my profile for link

Happy to answer questions about how the semantic compression works, cross-platform compatibility, or why treating this as a translation problem (not just compression) matters. 🧠

Built this because I got tired of being locked into ChatGPT's ecosystem when Claude often gives better answers for coding. Figured others might have the same problem.