Leetion

Save your LeetCode solutions directly to Notion with one click.

Demo

• Quick Overview
• Full Tutorial

Features

• One-Click Save - Capture your LeetCode solutions directly to Notion
• Multiple Snapshots - Save different versions/approaches of your solution
• Auto-Tagging - Automatically detects problem tags (Arrays, DP, Trees, etc.)
• Spaced Repetition - Get reminded to review problems for better retention
• Complexity Tracking - Record time and space complexity with suggestions
• Rich Notes - Add personal notes, alternative methods, and remarks
• Form Persistence - Your unsaved work is preserved across sessions

Installation

Chrome Web Store (Recommended)

1. Visit the Chrome Web Store page
2. Click "Add to Chrome"
3. Follow the setup instructions below

Firefox Add-ons

1. Visit the Firefox Add-ons page
2. Click "Add to Firefox"
3. Follow the setup instructions below

Manual Installation

1. Clone this repository
2. Open your browser's extension page:
   • Chrome: chrome://extensions
   • Firefox: about:debugging#/runtime/this-firefox
3. Enable "Developer mode" (Chrome) or click "Load Temporary Add-on" (Firefox)
4. Load the extension folder

Setup

1. Get Your Notion API Key

1. Go to Notion Integrations
2. Click "New integration"
3. Name it "Leetion" and select your workspace
4. Copy the "Internal Integration Token"

2. Create Your Notion Database

Create a new database in Notion with these properties:

Property	Type	Required
Name	Title	Yes
Number	Number	Yes
Difficulty	Select (Easy/Medium/Hard)	Yes
Tags	Multi-select	Yes
Status	Checkbox	Yes
Expertise	Select (Low/Medium/High)	Yes
Time Complexity	Rich Text	Optional
Space Complexity	Rich Text	Optional
Attempts	Number	Optional
Notes	Rich Text	Optional
Remark	Rich Text	Optional
Alternative Methods	Rich Text	Optional
Date	Date	Optional
Review	Date	Optional
URL	URL	Optional

3. Connect the Database

1. Open your Notion database
2. Click "..." menu → "Connections" → Add your "Leetion" integration
3. Copy the database ID from the URL:

https://notion.so/workspace/DATABASE_ID?v=...

4. Configure Leetion

1. Click the Leetion extension icon
2. Enter your API key and Database ID
3. Click "Save Settings"

Usage

1. Navigate to any LeetCode problem
2. Write your solution in the editor
3. Click the Leetion extension icon
4. Click "Save Solution" to capture your current code
5. Fill in optional details (complexity, notes, etc.)
6. Click "Save to Notion" to sync everything

Tips:

• Use multiple snapshots to save different approaches
• The form auto-saves locally, so you won't lose work
• Spaced repetition dates are calculated automatically
• Tags are auto-detected from LeetCode's problem tags

File Structure

leetion/
├── manifest.json       # Extension configuration
├── popup.html          # Popup UI markup
├── popup.js            # Main popup logic & event handling
├── background.js       # Service worker for Notion API calls
├── content.js          # Content script for LeetCode pages
├── styles.css          # Popup styling
├── onboarding.html     # First-time setup page
├── onboarding.css      # Onboarding styling
├── onboarding.js       # Onboarding logic
├── icons/              # Extension icons
├── build.sh            # Build script for packaging
├── LICENSE             # License file
└── README.md           # Documentation

Contributing

Contributions are welcome! Feel free to open issues or submit pull requests.

By submitting a contribution, you agree to transfer all rights to your contribution to the copyright holder.

License

Copyright (c) 2026 Neel Bansal. All Rights Reserved.

This software and its source code are proprietary. You may NOT:

• Copy, redistribute, or republish this software
• Use this code to create derivative works
• Submit this software to any app store or extension marketplace

See the LICENSE file for full details.