Examine source code of DeepL Translator

{
  "name": "__MSG_extName__",
  "version": "0.0.7",
  "description": "__MSG_extDescription__",
  "homepage_url": "https://chrislo.ca/deepl",
  "manifest_version": 2,
  "default_locale": "en",
  "browser_specific_settings": {
    "gecko": {
      "id": "deepl-addon@codeforthought.com"
    }
  },
  "icons": {
    "16": "icon-16.png",
    "32": "icon-32.png",
    "48": "icon-48.png",
    "128": "icon-128.png"
  },
  "browser_action": {
    "default_popup": "popup.html"
  },
  "background": {
    "scripts": [
      "deepl-background.js"
    ]
  },
  "content_scripts": [
    {
      "js": [
        "deepl-bridge.js"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ],
  "permissions": [
    "storage"
  ],
  "web_accessible_resources": [
    "deepl-page.js",
    "deepl-translator.js",
    "deepl-loading.gif"
  ]
}