Examine source code of Flowith Web Clipper Plus

{
  "manifest_version": 2,
  "name": "Flowith Web Clipper",
  "description": "flowith web clipper",
  "version": "0.4.0",
  "icons": {
    "16": "icon/16.png",
    "32": "icon/32.png",
    "48": "icon/48.png",
    "96": "icon/96.png",
    "128": "icon/128.png"
  },
  "permissions": [
    "contextMenus",
    "storage",
    "activeTab",
    "webRequest",
    "webRequestBlocking",
    "tabs",
    "*://*.twitter.com/*",
    "*://*.x.com/*",
    "*://*.youtube.com/*",
    "*://*.notion.so/*",
    "*://*.flomoapp.com/*",
    "*://*.xiaohongshu.com/*",
    "*://*.feishu.cn/docx",
    "*://*.feishu.net/docx",
    "*://*.larksuite.com/docx",
    "*://*.feishu-pre.net/docx",
    "*://*.larkoffice.com/docx"
  ],
  "web_accessible_resources": [
    "icon/*",
    "welcome/*",
    "welcome/index.html",
    "content-scripts/content.css",
    "content-scripts/content.js",
    "popup.html",
    "sidepanel.html"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": true
  },
  "browser_action": {
    "default_title": "flowith",
    "default_popup": "popup.html"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "css": [
        "content-scripts/content.css"
      ],
      "js": [
        "content-scripts/content.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{17052eac-5571-406a-a07e-0a39bacacfe4}"
    }
  }
}