Examine source code of Easy Video Sharpener

{
  "manifest_version": 2,
  "name": "Easy Video Sharpener",
  "version": "1.5.0",
  "description": "Real-time video sharpening using CSS SVG filters (unsharp mask + Shift-to-show UI). Improves video sharpness on large screens and TVs.",
  "author": "Harze2k",
  "homepage_url": "https://github.com/Harze2k",
  "icons": {
    "48": "icons/icon-48.svg",
    "96": "icons/icon-96.svg"
  },
  "permissions": [
    "storage"
  ],
  "browser_action": {
    "default_icon": {
      "96": "icons/icon-96.svg"
    },
    "default_title": "Easy Video Sharpener",
    "default_popup": "popup/popup.html"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*/*"
      ],
      "js": [
        "content/content.js"
      ],
      "css": [
        "content/overlay.css"
      ],
      "run_at": "document_idle",
      "all_frames": true
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "video-sharpener@harze2k.dev",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}