Disable Page Visibility API

Firefox add-on to disable the Page Visibility API. This prevents e.g. video conferencing systems from tracking whether you are currently in another window.

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manifest.json

{
  "manifest_version": 2,
  "name": "Disable Page Visibility API",
  "version": "1.0.3",
  "author": "Marvin Schopf",
  "description": "Prevent websites from tracking whether you are currently in another tab/ window.",
  "content_scripts": [
    {
      "matches": [
        "*://*/*"
      ],
      "js": [
        "disable.js"
      ]
    }
  ],
  "icons": {
    "48": "icon.png",
    "96": "[email protected]"
  }
}