Firefox Extension - Smaller YouTube Thumbnails

File:Yt-rev-thumbs.xpi

{
  "manifest_version": 2,
  "name": "yt-thumb-revert",
  "version": "1.0",
  "description": "Reverts YouTubes f-ed up thumbnails to smaller ones.",
  "permissions": ["<all_urls>"],
  "content_scripts": [
    {
      "matches": ["*://*.youtube.com/*"],
      "js": ["yt-rev-thumbs.js"],
      "run_at": "document_end"
    }
  ],
  "icons": {
    "48": "icons/yt-thumb-revert.png"
  }
}