Calighter is a Chrome extension that lets you highlight any text on the web and instantly add it to your Google Calendar as an event. It uses a local AI model for smart date/time extraction and event generation—no data leaves your machine.

• Local AI: All language processing runs locally for privacy.
• Fast & Simple: Highlight → Click → Calendar event.
• Customizable: Tweak your event details even after highlighting!

• Highlight → One-click event creation
• Local AI model to extract Event / Time / Location
• Natural language date parsing (AI + chrono-node date/time parsing)
• Google Calendar integration with calendar selection and event posting
• Editable event fields (title, start/end time, location, description)
• Side panel + popup support (Manifest V3)
• Fully local inference (no external server for text processing)

Calighter only requests the permissions it needs to parse highlights locally and create calendar events.

Tip: If you don’t need a persistent content script, you can rely on activeTab + scripting.executeScript and drop blanket host permissions.

Privacy:

• Parsing runs locally in the browser (ONNX Runtime and WebAssembly).
• No third-party servers; no analytics or telemetry; no data stored outside of Chrome.
• Only the event payload you confirm is sent to Google Calendar.

• Base Model: microsoft/MiniLM-L12-H384-uncased
  • FP32 checkpoint size: 134 MB
• Current Model: Calighter Model (fine‑tuned for EVENT / TIME / LOCATION)
  • INT8: 33.8 MB (75% size reduction vs FP32)
  • F1 Accuracy: 90%
• Inference: Runs client-side (WebAssembly backend). Model weights fetched once and cached.

1. Clone repository

   git clone https://github.com/KRMed/Calighter.git
   cd Calighter

2. Install dependencies

   npm install

3. Build (generates dist with manifest & assets)

   npm run build

4. Open chrome://extensions → Enable Developer Mode → “Load unpacked” → select the dist folder.
5. Click the extension icon → Sign in with Google → Highlight text on any page.

🚧 Chrome Web Store publication in progress 🚧

Prereqs: Node 18+, Chrome 114+, Google account.

1. Clone & install

   git clone https://github.com/KRMed/Calighter.git
   cd Calighter
   npm install

2. (Optional if you want your own credentials) Create Google OAuth credentials
   • Google Cloud Console → create/select a project
   • Enable “Google Calendar API” (APIs & Services → Library)
   • Create OAuth 2.0 Client ID (Web application)
   • Add Authorized redirect URI:

     https://<EXTENSION_ID>.chromiumapp.org/
     

   • How to get <EXTENSION_ID>: temporarily load the extension once (step 4) → copy the ID from chrome://extensions.
3. (If customizing OAuth) Update manifest.json oauth2.client_id with your Client ID.

   If you choose an env-based approach, expose VITE_GOOGLE_CLIENT_ID and reference it in your OAuth helper code.

4. Run in watch mode

   npm run dev

   Then load (or reload) the dist/ folder via chrome://extensions.
5. Sign in & test
   • Open the popup → Sign in with Google
   • Highlight text → reopen popup → confirm fields → “Add to Calendar”
6. Iterate
   • Keep npm run dev running
   • After rebuilds: click “Reload” on the Calighter card in chrome://extensions
7. Debugging
   • Service worker logs: chrome://extensions → “Service worker” link under Calighter
   • Content script logs: page DevTools Console
   • Popup logs: Right-click popup → Inspect
8. Scopes requested

   https://www.googleapis.com/auth/calendar.readonly
   https://www.googleapis.com/auth/calendar.events
   

9. Notes
   • Add a "key" to manifest.json to stabilize the extension ID across rebuilds (optional).
   • Parsing is local (ONNX Runtime). Only confirmed event data is sent to Google.

If you remove blanket host permissions:

• Drop host_permissions
• Use activeTab + chrome.scripting.executeScript (or message existing content script only after user action)
• Reduces permission prompt footprint