Examine source code of Reddit Column View

{
  "name": "Reddit Column View",
  "version": "1.0.7",
  "description": "Splits posts into columns. Compatible with old and new Reddit layouts.",
  "permissions": [
    "storage"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "images/16.png",
      "32": "images/32.png",
      "48": "images/48.png",
      "128": "images/128.png"
    }
  },
  "icons": {
    "16": "images/16.png",
    "32": "images/32.png",
    "48": "images/48.png",
    "128": "images/128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "https://www.reddit.com/*",
        "https://old.reddit.com/*"
      ],
      "js": [
        "main.js"
      ]
    }
  ],
  "web_accessible_resources": [
    "images/*.png",
    "images/*.ico"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{a947dbda-552a-11eb-ae93-0242ac130002}"
    }
  },
  "manifest_version": 2
}