GIFit!

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "name": "GIFit!",
  "description": "Make GIFs from YouTube videos",
  "version": "2.0.1",
  "permissions": [
    "activeTab"
  ],
  "content_scripts": [
    {
      "matches": [
        "*://www.youtube.com/*"
      ],
      "js": [
        "vendor/gif.js",
        "vendor/patch-worker.js",
        "content.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "content_security_policy": "script-src 'self'; object-src 'self'; child-src blob:",
  "web_accessible_resources": [
    "gif.js.map"
  ],
  "icons": {
    "128": "icon_128.png"
  },
  "manifest_version": 2
}