A browser extension for Chrome and Firefox that lets you ask questions and summarize any webpage using AI (using Ollama or any OpenAI-compatible API). Works best with the GPT-OSS-20b model.

In Beta. Not yet in the Chrome Web Store or Firefox Addons.

Features#

📄 One-Click Summaries - Summarize page content efficently
🤖 Follow Up Questions - Ask questions about the current webpage and summary
🔌 OpenAI-Compatible - Works with Ollama, OpenAI, Groq, and LM Studio
⚙️ Configurable - Choose your own model and API endpoint
🔒 Privacy-first - Keep summaries local with Ollama, or use a cloud provider when you choose one.
⌨️ Quick access - Keyboard shortcut of Ctrl/Cmd+Shift+U, use the right click menu, or click the extension icon.

About#

Made to solve a very simple problem I had as a user of the Helium web browser.

Installation (in dev mode)#

Chrome#

Open Chrome and navigate to chrome://extensions/
Enable Developer mode (toggle in top right)
Click Load unpacked
Select the webai-summarizer folder
The extension icon should appear in your toolbar
Optionally set up the keyboard shortcut at chrome://extensions/shortcuts

Firefox#

Open Firefox and navigate to about:debugging#/runtime/this-firefox
Click Load Temporary Add-on
Select the manifest.json file in the webai-summarizer folder
The extension icon should appear in your toolbar

Note: Firefox requires you to manually enable the keyboard shortcut:

Type about:addons in the address bar
Click the gear icon (⚙️) → Manage Extension Shortcuts

TODO#

Better branding / icon / logo
Publish to Chrome Web Store
Publish to Firefox Add-ons

Build for Specific Browser#

If needed, you can build for a specific browser:

# For Chrome
./build.sh chrome

# For Firefox
./build.sh firefox

Usage#

Navigate to any webpage
Click the extension icon in your toolbar, or press Ctrl/Cmd+Shift+U
Click "Summarize Page" for an instant summary, or
Type a question about the page content and press Enter

API Mode Explained#

Ollama Native Mode#

Uses Ollama's native /api/generate endpoint
Works out of the box if Ollama is installed
Recommended for local Ollama installations
Base URL should NOT include /v1

OpenAI-Compatible Mode#

Uses the /v1/chat/completions endpoint
Required for OpenAI, Groq, and other cloud providers
Can work with Ollama if you set the OPENAI_API_BASE environment variable
Base URL MUST include /v1 for Ollama compatibility mode

Privacy Notes#

In Ollama Native mode, your content stays on your machine (local model/server).
In OpenAI-compatible mode, page content is sent to the provider endpoint you configure.
The extension now extracts page text on-demand when you trigger summarize/chat, rather than running a persistent content script on all pages.

Troubleshooting#

"Cannot connect to localhost:11434"#

Make sure Ollama is running: ollama serve
Check that you pulled the model: ollama list
If using Ollama, make sure your URL doesn't have /v1 in Native mode
Check browser console for detailed error messages

"HTTP 403" or "HTTP 405"#

This means the API endpoint is wrong. Try:

Switch API Mode from settings
For Ollama Native: use http://localhost:11434 (no /v1)
For OpenAI mode: use http://localhost:11434/v1 (with /v1)

File Structure#

webai-summarizer/
├── manifest.json            # Extension configuration (active)
├── manifest-chrome.json    # Chrome-specific manifest
├── manifest-firefox.json    # Firefox-specific manifest
├── build.sh                # Build script for browser switching
├── BROWSER_SUPPORT.md      # Browser compatibility documentation
├── popup/
│   ├── popup.html         # Chat interface
│   ├── popup.css          # Styling
│   ├── popup.js           # Popup logic
│   └── marked.min.js      # Markdown parser
├── scripts/
│   ├── content.js         # Webpage text extraction
│   └── background.js      # API communication
├── options/
│   ├── options.html       # Settings page
│   ├── options.css
│   └── options.js
└── icons/
    ├── icon16.png
    ├── icon32.png
    ├── icon48.png
    └── icon128.png

Clone this repository

WIP Summarizer + Chat AI extension#