SiteScrubber

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "manifest_version": 2,
  "name": "SiteScrubber",
  "version": "2.0",
  "description": "Where the fudge did the swear words go?",
  "icons": {
    "16": "images/logo16.png",
    "48": "images/logo48.png",
    "128": "images/logo128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*/*"
      ],
      "js": [
        "myscript.js"
      ],
      "run_at": "document_end"
    }
  ]
}