Examine source code of Steam Achievement Guide

{
  "manifest_version": 3,
  "name": "Steam Achievement Guide",
  "version": "1.10.0",
  "description": "Steam Achievement Guide Extension shows guides on game pages, including difficulty, time, missables, and direct guide links.",
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "options_page": "popup.html",
  "action": {
    "default_popup": "popup.html"
  },
  "permissions": [
    "storage"
  ],
  "content_scripts": [
    {
      "matches": [
        "*://store.steampowered.com/*",
        "*://steamcommunity.com/*"
      ],
      "css": [
        "styles.css"
      ],
      "js": [
        "content.js"
      ]
    }
  ],
  "icons": {
    "16": "icons/16.png",
    "32": "icons/32.png",
    "48": "icons/48.png",
    "64": "icons/64.png",
    "128": "icons/128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "steam-achievement-guide@jansivans.com",
      "strict_min_version": "109.0"
    }
  }
}