LinkedIn Zip Solver 🧩

A lightweight browser extension that automatically solves Zip (Number Net) puzzles in LinkedIn Minigames.

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Demo

Features

• One-Click Solve: Click the extension icon and the puzzle solves itself.
• Automatic Detection: Finds the grid, numbers, and walls—no manual selection.
• Visual Path: Draws the full number-to-number path directly on the grid.
• Clear Feedback: In-page toasts for “Solving…”, “Solved!”, and errors.
• Local-Only: Everything runs in your browser; no data leaves your machine.

Installation

Works on Chromium-based browsers (Chrome, Edge, Brave).

1. Download

• Click the green <> Code button on this repo → Download ZIP.
• Unzip it. Ensure the folder contains manifest.json and extension files.

2. Open Extensions

• Chrome: visit chrome://extensions
• Edge: visit edge://extensions
• Brave: visit brave://extensions

3. Enable Developer Mode

• Toggle Developer mode on the top right.

4. Load Unpacked

• Click Load unpacked (top left).
• Select the unzipped folder that contains manifest.json.

5. Pin It

• Click the puzzle icon 🧩 in the toolbar and pin “LinkedIn Zip Solver”.

Usage

1. Open a LinkedIn Zip puzzle page.
2. Click the extension icon (or pin and click from the toolbar).
3. Watch the solver draw the solution path.

How It Works (high-level)

• DOM parsing: Detects the puzzle grid and reads tiles, numbers, and walls from the LinkedIn minigame DOM.
• Modeling: Builds an internal grid graph with constraints from numbers and walls.
• Solver: Finds a valid continuous path that visits numbers in the required order using graph search + heuristics.
• Rendering: Overlays the path back on the puzzle with a lightweight canvas/SVG.

Permissions

This extension only requests the minimum needed to run on LinkedIn puzzle pages.

{
  "name": "LinkedIn Zip Solver",
  "manifest_version": 3,
  "version": "1.0.0",
  "description": "Automatically solves Zip (Number Net) puzzles on LinkedIn.",
  "icons": { "16": "icons/icon16.png", "48": "icons/icon48.png", "128": "icons/icon128.png" },
  "action": { "default_title": "Solve LinkedIn Zip" },
  "permissions": ["activeTab", "scripting"],
  "host_permissions": ["https://*.linkedin.com/*"],
  "background": { "service_worker": "background.js" }
}

Troubleshooting

• Button does nothing

  • Make sure you’re on a LinkedIn Zip puzzle page.
  • Refresh the page, then click the icon again (dynamic content sometimes needs a reload).

• “Load unpacked” is disabled

  • Enable Developer mode on the extensions page.

• “Manifest file is missing or unreadable”

  • Ensure you selected the folder that directly contains manifest.json.

Related

Disclaimer

This project is not affiliated with, associated with, or endorsed by LinkedIn. Use at your own discretion.

License

Apache-2.0 — see LICENSE.