Your conversations, remembered. Privately.
🌐 繁體中文 | 简体中文 | English | 日本語 | 한국어 | Español | Français | Deutsch
A Chrome extension that silently captures your ChatGPT / Claude / Gemini / Perplexity / Grok conversations and stores them as private, locally-indexed semantic memories — with a one-click Recall button to inject relevant context back into new chats.
100% local. No cloud. No server. No account required.
output.mp4
Install directly from the Chrome Web Store.
Note: The Chrome Web Store version may lag behind the latest release. For the newest features, download the latest
.zipfrom the Releases page and load it manually (see below).
- Go to the Releases page and download the latest
.zip - Unzip the file
- Open Chrome →
chrome://extensions/ - Toggle Developer mode on (top-right)
- Click Load unpacked → select the unzipped folder
Requirements: Node.js 18+, pnpm (npm install -g pnpm), Chrome / Edge (MV3)
# Fork this repository to your own GitHub account
git clone https://github.com/<your-github-username>/personal-ai-memory.git
cd personal-ai-memory
pnpm install
# Development mode — auto-rebuilds on every save
pnpm devThen load build/chrome-mv3-dev/ via Load unpacked in chrome://extensions/.
# Production build
pnpm build
# output: build/chrome-mv3-prod/After any code change: click Reload on the AI Memory card, then refresh open AI tabs.
| Feature | Details |
|---|---|
| Passive capture | Auto-intercepts ChatGPT / Claude / Gemini / Perplexity / Grok — no setup, no clicks. Just visit the page and existing conversations are captured automatically. |
| Hybrid search | Vector (time-decay) + BM25, fused with RRF for best-of-both results |
| One-click Recall | Injects relevant memories as a RAG prompt into ChatGPT and Claude |
| Local backup | Export / import full backup as JSON (embeddings included) |
| Favourite Prompts | Save, autocomplete (Trie), organise into drag-and-drop folders |
| Floating panel | Draggable memory panel on every AI site |
| 8 UI languages | zh-TW · zh-CN · en · ja · ko · es · fr · de — auto-detected |
| Dark / Light theme | Apple Liquid Glass-inspired toggle |
Supported platforms: ChatGPT (chat.openai.com / chatgpt.com) · Gemini (gemini.google.com) · Claude (claude.ai) · Perplexity (perplexity.ai) · Grok (grok.com)
You chat on ChatGPT / Claude / Gemini / Perplexity / Grok
│ (extension captures silently in background)
▼
Memories stored locally in IndexedDB
+ semantic embedding vector (ONNX, runs in browser)
+ keyword index (MiniSearch / BM25, in Service Worker memory)
│
│ Later — you start a new chat
▼
Click 🧠 Recall next to the ChatGPT / Claude input
│
▼
Hybrid search:
Route A — vector similarity × time-decay (recent = higher weight)
Route B — BM25 keyword search (prefix matching)
Fusion — Reciprocal Rank Fusion (RRF)
│
▼
Top-k memories injected as RAG context into the input box
AI now has your history as background knowledge
Route A — Vector Search + Time-Decay
query → Float32Array embedding (ONNX, Offscreen Document)
for each record: dot_product(q, r.embedding) × exp(-0.01 × daysOld)
group by parentId → keep max decayed score per group
sort descending → vectorRanked[]
(half-life ≈ 69 days, λ = 0.01)
Route B — Keyword search (MiniSearch / BM25)
miniSearch.search(query, { prefix: true })
prefix matching: "py" finds "python", "react" finds "reactivity"
sort by BM25 score → kwRanked[]
Fusion — Reciprocal Rank Fusion (RRF, k = 60)
rrfScore[key] += 1 / (60 + rank) for each list
sum both lists → sort desc → top-k → merge chunks → SearchResult[]
Fallback: if embedding fails, keyword-only results are returned; if no keyword matches, vector-only results are returned.
- Log in to your ChatGPT account and go to the main screen.
- Click your profile picture or name in the corner to open the menu.
- Select Settings.
- Go to the Data controls tab.
- Find Export data and click Export.
- Click Confirm export in the confirmation window.
- You will receive an email with a download link (may take up to 24 hours).
- Download the ZIP file. After extracting, the chat history file is
conversations-00x.json.
Export via Google Takeout:
- Go to Google Takeout and sign in.
- Click Deselect all at the top.
- Scroll down and check My Activity (NOT
Gemini Apps). - Click Multiple formats below that section.
- Change the first activity format from HTML to JSON, click OK.
- Click Next step → choose delivery method → Create export.
- Wait for the email. After extracting, the file is
my activity.json.
- Go to https://claude.ai/settings/data-privacy-controls.
- Click Export data.
- Wait for the email with the download link.
- After extracting, the chat history file is
conversations.json.
Perplexity does not support user data export. Each conversation must be visited individually to be captured by the extension.
- Go to https://grok.com.
- Click your profile picture (bottom-left) → Settings → Data controls.
- Click Export Account Data.
- Wait several hours for the download link email.
- After extracting, the file is
prod-grok-backend.json.
This extension intercepts your AI conversations. Here is exactly what it does and does not do:
| Question | Answer |
|---|---|
| Where is data stored? | Browser-local IndexedDB only (AIMemoryDB) — never leaves your device |
| Does it make network requests? | Only once — to download the ONNX embedding model on first run. No conversation data is ever uploaded. |
| Can websites see my memories? | No. Data is isolated in the extension's storage, inaccessible to page scripts. |
| Can I delete my data? | Yes — soft-delete individual records from the floating panel, or clear all via DevTools → IndexedDB. |
Treat this extension like a local diary. It sees everything you type and receive on supported AI sites. Review the source code if you have concerns.
| Layer | Technology |
|---|---|
| Extension framework | Plasmo (Chrome MV3) |
| UI | React 18 + custom Theme Tokens |
| Persistence | IndexedDB via Dexie |
| Vector search | Transformers.js ONNX — paraphrase-multilingual-MiniLM-L12-v2 |
| Keyword search | MiniSearch (BM25, in-memory) |
| Language | TypeScript |
📂 Project Structure
src/
├── background/
│ ├── index.ts Message router · capture handler · MiniSearch sync
│ ├── search.ts Hybrid search engine (vector × decay + BM25 + RRF)
│ ├── db.ts IndexedDB (Dexie) operations
│ ├── embedding.ts ONNX model name / version constants
│ ├── injector.ts MAIN-world fetch/XHR interceptor (injected into page)
│ └── adapters/
│ ├── chatgpt.ts ChatGPT SSE delta-v1 parser
│ ├── claude.ts Claude SSE parser
│ ├── gemini.ts Gemini XHR StreamGenerate parser + passive capture
│ ├── perplexity.ts Perplexity SSE parser
│ └── grok.ts Grok SSE parser
├── contents/
│ ├── interceptor.ts ISOLATED-world bridge + <title> MutationObserver
│ ├── memory-float-ui.tsx Floating panel content script entry point
│ ├── chatgpt-injector.tsx Recall button injection + RAG prompt assembly
│ ├── gemini-injector.tsx Gemini passive capture + Recall button
│ └── grok-injector.tsx Grok passive capture
├── tabs/
│ └── offscreen.tsx ONNX inference (Offscreen Document — needs DOM)
├── popup/
│ ├── index.tsx Popup root — sliding panel navigation
│ └── components/
│ ├── MainMenuView.tsx Main menu + Favourite Prompts section
│ ├── MemoryTableView.tsx Memory list grouped by session
│ ├── ImportView.tsx JSON import UI
│ ├── ExportView.tsx JSON export UI
│ ├── FavoritePromptsSection.tsx Trie autocomplete prompts
│ └── FolderView.tsx Drag-and-drop folder management
├── ui/memory-panel/
│ └── FloatingMemoryPanel.tsx Draggable floating panel (logo + panel)
├── i18n/
│ ├── translations.ts 8-language string map
│ ├── LanguageContext.tsx Language switching (localStorage)
│ └── ThemeContext.tsx Dark / light theme (localStorage)
└── types/
├── memory.ts MemoryRecord · SearchResult interfaces
└── messages.ts All Chrome message type definitions
| Target | How to reach it |
|---|---|
| Background Service Worker | chrome://extensions/ → AI Memory → Service worker |
| Popup | Right-click extension icon → Inspect popup |
| Content scripts | DevTools → Sources → Content scripts |
| IndexedDB | DevTools → Application → Storage → IndexedDB → AIMemoryDB |
| Manual search test | Service Worker console: testSearch('keyword', 5) |
pnpm test # Unit tests (Vitest)
pnpm test:integration # Integration tests
pnpm test:e2e # E2E tests (Playwright — run pnpm build first)- New: Grok (
grok.com) support — conversations are silently captured while you browse. - New: Gemini passive message capture — existing conversations on the page are automatically captured when you visit.
- Perplexity (
perplexity.ai) support — conversations are silently captured while you browse. Note: Perplexity itself does not support user data export, so each conversation must be visited individually to be collected.
- Full Claude web support (
claude.ai) — conversation capture, Recall button injection, and floating memory panel now work on Claude
- ChatGPT and Gemini conversation capture
- Hybrid vector + BM25 search with RRF fusion
- One-click Recall button (ChatGPT, Gemini)
- Favourite Prompts with Trie autocomplete and drag-and-drop folders
- Export / import JSON backup
- Floating memory panel
- 8 UI languages, dark / light theme
PRs and issues are welcome! Please open an issue to discuss significant changes before submitting a PR.
- Bug reports: open an issue
- Feature requests: open an issue
