WordReplace

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "manifest_version": 2,
  "name": "WordReplace",
  "description": "Replace configured words on a webpage",
  "version": "2.0",
  "options_page": "options.html",
  "browser_action": {
    "default_icon": "/img/icon_on.png",
    "default_title": "WordReplace"
  },
  "background": {
    "scripts": [
      "/js/background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "run_at": "document_idle",
      "js": [
        "/js/substitutions.js"
      ]
    }
  ],
  "permissions": [
    "activeTab",
    "storage",
    "background"
  ]
}