Examine source code of Web Apps by 123apps

{
  "name": "__MSG_allapps_h1__",
  "description": "__MSG_allapps_d1__",
  "homepage_url": "https://123apps.com",
  "version": "1.2.1",
  "manifest_version": 2,
  "default_locale": "en",
  "icons": {
    "16": "i/icon/16.png",
    "32": "i/icon/32.png",
    "48": "i/icon/48.png",
    "64": "i/icon/64.png",
    "128": "i/icon/128.png",
    "256": "i/icon/256.png",
    "512": "i/icon/512.png"
  },
  "browser_action": {
    "default_title": "__MSG_allapps_h1__",
    "default_popup": "popup.html"
  },
  "content_scripts": [
    {
      "js": [
        "js/content.js"
      ],
      "matches": [
        "https://123apps.com/*",
        "https://video-converter.com/*",
        "https://online-audio-converter.com/*",
        "https://pdf.io/*",
        "https://convert.io/*",
        "https://online-video-cutter.com/*",
        "https://online-voice-recorder.com/*",
        "https://mp3cut.net/*",
        "https://audio-joiner.com/*",
        "https://webcamera.io/*",
        "https://audio-extractor.net/*",
        "https://extract.me/*"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{e662576a-2f73-4069-bcca-ddf440fea62b}"
    }
  }
}