Examine source code of PlayFaster

{
  "manifest_version": 2,
  "name": "PlayFaster",
  "description": "This extension's single purpose is enhanced playback speed control for videos and audio at your preferred speed.",
  "version": "2026.5.29",
  "icons": {
    "16": "icon-16.png",
    "48": "icon-48.png",
    "128": "icon-128.png"
  },
  "homepage_url": "https://playfaster.app/",
  "permissions": [
    "storage",
    "scripting",
    "webNavigation",
    "tabs",
    "<all_urls>"
  ],
  "web_accessible_resources": [
    "inject.js",
    "icons/big-step.png",
    "icons/small-step.png"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "play-faster@whiteboardworks.com",
      "strict_min_version": "142.0"
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_popup": "popup.html"
  },
  "content_scripts": [
    {
      "matches": [
        "*://playfaster.app/*",
        "*://www.playfaster.app/*"
      ],
      "run_at": "document_idle",
      "js": [
        "content-scripts/activate.js"
      ]
    },
    {
      "matches": [
        "<all_urls>"
      ],
      "all_frames": true,
      "run_at": "document_start",
      "js": [
        "content-scripts/content.js"
      ]
    }
  ]
}