Examine source code of ReCaptcha Solver

{
  "manifest_version": 2,
  "name": "ReCaptcha Solver",
  "version": "5.7",
  "description": "Verify Google ReCaptcha V2 automatically with :2Captcha, DeathByCaptcha, Anti-Captcha, ImageTyperz, RuCaptcha, BestCaptchaSolver or EndCaptcha",
  "icons": {
    "48": "icons/icon_default.png"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "all_frames": true,
      "js": [
        "content/main.js"
      ]
    }
  ],
  "background": {
    "scripts": [
      "background/main.js"
    ]
  },
  "options_ui": {
    "page": "options/main.html",
    "browser_style": true
  },
  "browser_action": {
    "default_popup": "options/main.html",
    "browser_style": true,
    "default_icon": {
      "16": "icons/icon_default.png"
    }
  },
  "web_accessible_resources": [
    "icons/icon.png",
    "icons/check.png"
  ],
  "permissions": [
    "webRequest",
    "activeTab",
    "tabs",
    "webRequestBlocking",
    "browsingData",
    "http://*/*",
    "https://*/*",
    "storage",
    "http://api.endcaptcha.com/*",
    "https://bcsapi.xyz/*",
    "http://api.deathbycaptcha.com/2captcha/*",
    "https://2captcha.com/*",
    "https://imagetyperz.com/*",
    "https://captchatypers.com/*",
    "https://api.anti-captcha.com/createTask/",
    "https://api.anti-captcha.com/getTaskResult/",
    "https://api.solverecaptcha.com/",
    "https://api.captchadecoder.com/decode"
  ],
  "applications": {
    "gecko": {
      "id": "doz4@hotmail.com"
    }
  }
}