MetaClean for Gmail

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "name": "MetaClean for Gmail",
  "description": "__MSG_extensionDescription__",
  "default_locale": "en",
  "version": "3.0.2",
  "author": "Adarsus Technologies S.L.",
  "content_scripts": [
    {
      "matches": [
        "https://mail.google.com/*"
      ],
      "css": [
        "/css/content.css"
      ],
      "js": [
        "/js/app/content.js"
      ],
      "run_at": "document_start"
    }
  ],
  "background": {
    "service_worker": "/js/app/background.js"
  },
  "action": {
    "default_popup": "/popup.htm",
    "default_title": "MetaClean for Gmail",
    "default_icon": {
      "19": "/images/MetaClean19.png",
      "22": "/images/MetaClean22.png",
      "38": "/images/MetaClean38.png",
      "48": "/images/MetaClean48.png"
    }
  },
  "permissions": [
    "storage"
  ],
  "host_permissions": [
    "https://mail.google.com/",
    "https://www.metaclean.es/*"
  ],
  "homepage_url": "https://www.adarsus.com",
  "icons": {
    "16": "/images/MetaClean16.png",
    "48": "/images/MetaClean48.png",
    "128": "/images/MetaClean128.png"
  },
  "web_accessible_resources": [
    {
      "resources": [
        "/images/*.png",
        "/css/content.css",
        "/popup.htm",
        "/css/popup.css",
        "/js/app/popup.js",
        "/css/lc_switch.css",
        "/js/app/lc_switch.js",
        "/js/app/gmailJsLoader.js",
        "/js/app/extension.js"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ],
  "minimum_chrome_version": "88",
  "manifest_version": 3
}