Examine source code of Ptt Media Preview

{
  "name": "Ptt Media Preview",
  "description": "增強 Ptt 連結預覽體驗",
  "version": "5.2.0",
  "icons": {
    "48": "icon/48.png",
    "128": "icon/128.png",
    "256": "icon/256.png"
  },
  "permissions": [
    "webRequest",
    "webRequestBlocking",
    "https://*.imgur.com/*",
    "https://www.ptt.cc/*",
    "https://term.ptt.cc/"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "https://www.ptt.cc/*.html"
      ],
      "js": [
        "imgur.js",
        "web.js"
      ]
    },
    {
      "matches": [
        "https://term.ptt.cc/"
      ],
      "js": [
        "imgur.js",
        "term.js"
      ]
    }
  ],
  "manifest_version": 2,
  "browser_specific_settings": {
    "gecko": {
      "id": "{7f9d8258-89a4-430e-891f-0968a60e2298}"
    }
  }
}