Elements Viewer

See your elements height and width on webpage

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manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "name": "Elements Viewer",
  "description": "See your elements height and width on webpage",
  "version": "1",
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "permissions": [
    "activeTab"
  ],
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "elements-viewer.js"
      ]
    }
  ],
  "browser_action": {
    "default_title": "Elements Viewer"
  },
  "icons": {
    "16": "icons/icon-16.png",
    "32": "icons/icon-32.png",
    "48": "icons/icon-48.png",
    "128": "icons/icon-128.png"
  },
  "manifest_version": 2
}