Alt-Tag Overlay

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "manifest_version": 2,
  "name": "Alt-Tag Overlay",
  "description": "Display an overlay of alt tags overtop images",
  "version": "0.92",
  "permissions": [
    "activeTab"
  ],
  "background": {
    "scripts": [
      "backend.js"
    ],
    "persistent": false
  },
  "browser_action": {
    "default_icon": "icon.png",
    "default_title": "Click to Toggle - Alt-Tag Overlay"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "thirdParty/jquery-3.2.1.min.js",
        "thirdParty/jquery-ui.js",
        "custom.js"
      ],
      "run_at": "document_end"
    }
  ]
}