TabMirror

DUPLICATE TAB DETECTOR: This extension helps manage your browsing by alerting you when you’re about to open a tab that’s already…

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manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "manifest_version": 3,
  "name": "TabMirror",
  "version": "1.0",
  "background": {
    "service_worker": "background.js"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ]
    }
  ],
  "permissions": [
    "tabs"
  ],
  "icons": {
    "16": "tab-mirror.png",
    "48": "tab-mirror.png",
    "128": "tab-mirror.png"
  }
}