Examine source code of Sakuga Extended

{
  "manifest_version": 3,
  "name": "Sakuga Extended",
  "short_name": "Sakuga Extended",
  "description": "Enjoy a better experience with SAKUGABOORU! Previews on posts, frame control on videos...",
  "version": "2.1.1",
  "author": "ftLoic",
  "icons": {
    "32": "icons/logo-32.png",
    "64": "icons/logo-64.png",
    "96": "icons/logo-96.png",
    "128": "icons/logo-128.png"
  },
  "action": {
    "default_icon": {
      "32": "icons/logo-32.png",
      "64": "icons/logo-64.png"
    },
    "default_title": "Sakuga Extended",
    "default_popup": "popup.html"
  },
  "content_scripts": [
    {
      "matches": [
        "*://www.sakugabooru.com/*",
        "*://sakugabooru.com/*"
      ],
      "run_at": "document_end",
      "css": [
        "css/style.css"
      ],
      "js": [
        "js/redesign.js"
      ]
    },
    {
      "matches": [
        "*://www.sakugabooru.com/",
        "*://sakugabooru.com/"
      ],
      "run_at": "document_idle",
      "css": [
        "css/index.css"
      ],
      "js": [
        "js/index.js"
      ]
    },
    {
      "matches": [
        "*://www.sakugabooru.com/post/show/*",
        "*://sakugabooru.com/post/show/*",
        "*://www.sakugabooru.com/comment*",
        "*://sakugabooru.com/comment*"
      ],
      "run_at": "document_end",
      "css": [
        "css/search.css"
      ],
      "js": [
        "js/commentsTooltips.js"
      ]
    },
    {
      "matches": [
        "*://www.sakugabooru.com/post",
        "*://www.sakugabooru.com/post?*",
        "*://www.sakugabooru.com/post/popular*",
        "*://www.sakugabooru.com/pool/show*",
        "*://www.sakugabooru.com/user/show/*",
        "*://sakugabooru.com/post",
        "*://sakugabooru.com/post?*",
        "*://sakugabooru.com/post/popular*",
        "*://sakugabooru.com/pool/show*",
        "*://sakugabooru.com/user/show/*"
      ],
      "run_at": "document_idle",
      "css": [
        "css/preview.css"
      ],
      "js": [
        "js/preview.js"
      ]
    },
    {
      "matches": [
        "*://www.sakugabooru.com/post",
        "*://www.sakugabooru.com/post?*",
        "*://www.sakugabooru.com/post/popular*",
        "*://sakugabooru.com/post",
        "*://sakugabooru.com/post?*",
        "*://sakugabooru.com/post/popular*"
      ],
      "run_at": "document_end",
      "css": [
        "css/search.css"
      ],
      "js": [
        "js/search.js",
        "js/fastaveragecolor.js"
      ]
    },
    {
      "matches": [
        "*://www.sakugabooru.com/post/show/*",
        "*://sakugabooru.com/post/show/*"
      ],
      "run_at": "document_end",
      "css": [
        "css/post.css",
        "css/search.css"
      ],
      "js": [
        "js/frames.js",
        "js/settings.js",
        "js/libgif.js",
        "js/search.js",
        "js/screenshot.js"
      ]
    },
    {
      "matches": [
        "*://www.sakugabooru.com/data/*",
        "*://sakugabooru.com/data/*"
      ],
      "run_at": "document_idle",
      "css": [
        "css/post.css"
      ],
      "js": [
        "js/framesData.js",
        "js/libgif.js"
      ]
    }
  ],
  "permissions": [
    "storage",
    "scripting"
  ],
  "host_permissions": [
    "*://www.sakugabooru.com/*",
    "*://sakugabooru.com/*"
  ],
  "externally_connectable": {
    "matches": [
      "*://www.sakugabooru.com/*",
      "*://sakugabooru.com/*"
    ]
  },
  "web_accessible_resources": [
    {
      "resources": [
        "changelog.html",
        "css/*",
        "html/*",
        "fonts/*",
        "js/framesScript.js",
        "js/pictureEvents.js",
        "js/commentsNotice.js",
        "js/resetVideo.js"
      ],
      "matches": [
        "*://www.sakugabooru.com/*",
        "*://sakugabooru.com/*"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{1d610bd0-ebe2-4472-8d9c-30759ba0fb57}"
    }
  }
}