Examine source code of Reddit Post Filter

{
  "manifest_version": 2,
  "name": "Reddit Post Filter",
  "version": "1.101",
  "description": "Hides Reddit posts containing blacklisted keywords stored in local storage.",
  "permissions": [
    "storage",
    "tabs",
    "activeTab",
    "scripting",
    "*://www.reddit.com/*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "*://www.reddit.com/*"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "browser_action": {
    "default_icon": {
      "16": "images/icons/icon16.png",
      "48": "images/icons/icon48.png",
      "128": "images/icons/icon128.png"
    },
    "default_title": "Manage Blacklist Keywords"
  },
  "icons": {
    "16": "images/icons/icon16.png",
    "48": "images/icons/icon48.png",
    "128": "images/icons/icon128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{791e4d3a-c740-45dd-a437-2786567bbf83}"
    }
  }
}