Hex-Grid

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "name": "Hex-Grid",
  "version": "1.0.2",
  "manifest_version": 2,
  "description": "Show grid lines directly on any web page and also calculate pixel distances between elements.",
  "browser_action": {
    "default_icon": "images/hex_grid_logo.png",
    "default_popup": "index.html"
  },
  "permissions": [
    "activeTab",
    "contextMenus"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "icons": {
    "16": "images/hex_grid_logo_w128_h128.png",
    "32": "images/hex_grid_logo_w128_h128.png",
    "48": "images/hex_grid_logo_w128_h128.png",
    "128": "images/hex_grid_logo_w128_h128.png",
    "256": "images/hex_grid_logo_w256_h256.png",
    "512": "images/hex_grid_logo_w512_h512.png"
  },
  "web_accessible_resources": [
    "content_script/rulers.html",
    "content_script/styles.css"
  ]
}