Merlin
Ruler

Ruler

Simple measuring tool for web developers.

Merlin
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manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "name": "__MSG_appName__",
  "description": "__MSG_appDescription__",
  "version": "2.3.11",
  "default_locale": "en",
  "permissions": [
    "activeTab",
    "tabs",
    "storage",
    "unlimitedStorage",
    "browsingData",
    "notifications",
    "http://*/*",
    "https://*/*",
    "file://*/*",
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "scripts/background.js"
    ],
    "persistent": false
  },
  "icons": {
    "16": "images/icon-16.png",
    "48": "images/icon-48.png",
    "128": "images/icon-128.png"
  },
  "browser_action": {
    "default_icon": {
      "19": "images/icon-19.png",
      "38": "images/icon-38.png"
    },
    "default_title": "Ruler"
  },
  "manifest_version": 2
}