Examine source code of Pass Show

{
  "manifest_version": 2,
  "version": "1.4.1resigned1",
  "name": "Pass Show",
  "description": " Affiche ou cache les mots de passes",
  "browser_action": {
    "default_icon": "./icon128.png",
    "default_popup": "popup.html"
  },
  "permissions": [
    "tabs"
  ],
  "icons": {
    "16": "./icon16.png",
    "64": "./icon64.png",
    "128": "./icon128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "jquery-3.3.1.min.js",
        "content.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{2b206482-4b8e-4ae2-822e-6bfa405b2dd0}"
    }
  }
}