Examine source code of GIF Playback Tools

{
  "manifest_version": 3,
  "name": "GIF Scrubber",
  "version": "0.1.1",
  "author": "Benjin Dubishar",
  "description": "Play, pause, scrub, and frame-step through GIFs in Firefox",
  "homepage_url": "https://github.com/Benjin/FirefoxGifScrub",
  "icons": {
    "48": "icons/icon.svg",
    "96": "icons/icon.svg"
  },
  "host_permissions": [
    "http://*/*",
    "https://*/*",
    "file:///*"
  ],
  "content_scripts": [
    {
      "matches": [
        "<all_urls>",
        "file:///*"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_idle",
      "all_frames": false
    }
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "page.js"
      ],
      "matches": [
        "<all_urls>",
        "file:///*"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "gif-scrubber@example.local",
      "strict_min_version": "128.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    }
  }
}