Offline Markdown Notepad with LLM Summarizer

Markdown Notepad, a lightweight offline-first note-taking Chrome Extension that allows you to write notes in Markdown and instantly generate AI-powered summaries — without any internet connection.

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Key Features

• Markdown Support: Write notes with basic Markdown formatting (bold, italic, headers, lists).
• Instant Summarization: Summarize your notes using a local gemma3:1b-it-qat LLM (downloaded from Ollama).
• Fully Offline: No internet required.
• Save Notes: One-click export as .md files.

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Architecture Overview

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Prerequisites

Make sure you have installed:

• Python 3.x
• Chrome Browser
• flask
• Ollama installed locally (for running LLM models)
• Desired LLM model downloaded via Ollama

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Steps to Set Up

1. Clone This Repository

git clone https://github.com/your-username/markdown-notepad.git
cd markdown-notepad

2. Install Python Dependencies

pip install flask flask-cors requests

These libraries are required to run the local Flask proxy server.

3. Start the Flask Proxy Server

Inside your project folder, run:

python proxy_server.py

You should see:

* Running on http://127.0.0.1:5000/ 
* Press CTRL+C to quit

Your proxy server is now ready and listening on port 5000.

4. Start Ollama Server and Load Gamma 1B Model

In a separate terminal window:

ollama serve

or directly run:

ollama run gamma:1b

This ensures that the LLM is ready to accept summarization requests.

5. Load Extension in Chrome Browser

• Open Chrome and visit: chrome://extensions/

• Enable Developer Mode (top right corner).

• Click Load Unpacked.

• Select the folder where you cloned this repo (markdown-notepad/).

• Your extension should now appear on the Chrome Extensions page.

6. Use The Extension

• Click on the extension icon.

• Start typing your notes in Markdown format.

• Click "Generate Summary" to summarize the notes instantly, even offline!