Examine source code of keepClipper - google keep clipper

{
  "manifest_version": 3,
  "default_locale": "en",
  "name": "keepClipper",
  "short_name": "keepClipper",
  "description": "keepClipper",
  "version": "0.0.2",
  "author": "NoteRail",
  "icons": {
    "24": "icon-24.png",
    "32": "icon-32.png",
    "128": "icon-128.png"
  },
  "action": {
    "default_icon": {
      "16": "icon.png",
      "24": "icon-24.png"
    },
    "default_title": "Open keepClipper (Alt+K)",
    "default_popup": "popup/index.html"
  },
  "sidebar_action": {
    "default_icon": {
      "16": "icon.png",
      "24": "icon-24.png"
    },
    "default_panel": "panel/index.html",
    "open_at_install": false
  },
  "options_page": "options/index.html",
  "background": {
    "scripts": [
      "background/background.js"
    ],
    "type": "module"
  },
  "content_scripts": [
    {
      "matches": [
        "https://notes-pa.clients6.google.com/static/proxy.html?*"
      ],
      "js": [
        "scripts/xhr.js"
      ],
      "run_at": "document_start",
      "all_frames": true,
      "world": "MAIN"
    },
    {
      "matches": [
        "https://notes-pa.clients6.google.com/static/proxy.html?*"
      ],
      "js": [
        "scripts/msg-proxy.js"
      ],
      "run_at": "document_start",
      "all_frames": true
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "keepclipper@anilkumarum.me",
      "strict_min_version": "133.0"
    }
  },
  "commands": {
    "_execute_action": {
      "suggested_key": {
        "default": "Alt+K",
        "windows": "Alt+K",
        "mac": "Alt+K",
        "linux": "Alt+K"
      }
    },
    "_execute_sidebar_action": {
      "suggested_key": {
        "default": "Alt+N",
        "windows": "Alt+N",
        "mac": "Alt+N",
        "linux": "Alt+N"
      }
    },
    "screenshot": {
      "suggested_key": {
        "default": "Alt+S"
      },
      "description": "Capture screenshot"
    },
    "multi_select_text": {
      "suggested_key": {
        "default": "Alt+M"
      },
      "description": "Multi select text"
    }
  },
  "web_accessible_resources": [
    {
      "resources": [
        "scripts/screenshot/crop-selector.js",
        "scripts/screenshot/crop-box.js",
        "scripts/screenshot/detect-height.js",
        "scripts/screenshot/crop-action.js",
        "scripts/screenshot/shot-cropper.css",
        "scripts/highlighter/Highlighter.js",
        "scripts/highlighter/HighlightRange.js",
        "scripts/highlighter/highlighterCmd.js",
        "scripts/clip-article/auto-clip-article.js",
        "scripts/generator/mark-txt-generator.js",
        "scripts/generator/text-generator.js",
        "scripts/generator/util.js",
        "scripts/generator/enums.js",
        "scripts/func-script.js"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ],
  "declarative_net_request": {
    "rule_resources": [
      {
        "id": "ruleset_1",
        "enabled": true,
        "path": "keep-request.json"
      }
    ]
  },
  "permissions": [
    "activeTab",
    "contextMenus",
    "declarativeNetRequestWithHostAccess",
    "storage",
    "scripting"
  ],
  "host_permissions": [
    "https://keep.google.com/*",
    "https://notes-pa.clients6.google.com/static/proxy.html?*"
  ],
  "optional_permissions": [
    "cookies"
  ],
  "optional_host_permissions": [
    "<all_urls>"
  ]
}