HappyTabs: Puppies & kittens for charity

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "manifest_version": 2,
  "name": "HappyTabs: Puppies & kittens for charity",
  "short_name": "HappyTabs",
  "description": "Cute pictures of puppies and kittens on every new tab. Proceeds are donated to animal shelters and other non-profit organizations.",
  "version": "8",
  "chrome_url_overrides": {
    "newtab": "main.html"
  },
  "permissions": [
    "topSites"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.happytabs.org/*"
      ],
      "js": [
        "content.js"
      ],
      "all_frames": true,
      "run_at": "document_end"
    }
  ],
  "icons": {
    "16": "icon16.png",
    "48": "icon48.png",
    "128": "icon128.png"
  },
  "browser_action": {
    "default_title": "HappyTabs",
    "default_popup": "popup.html"
  }
}