Measure-it
Draw a ruler across any webpage to check the width, height, or alignment of page elements in pixels.
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manifest.json
{
"manifest_version": 2,
"name": "Measure-it",
"description": "Draw a ruler across any webpage to check the width, height, or alignment of page elements in pixels.",
"version": "2.0",
"icons": {
"32": "icons/icon_32.png",
"48": "icons/icon_48.png",
"64": "icons/icon_64.png",
"128": "icons/icon_128.png"
},
"browser_action": {
"default_icon": "icons/icon_32.png",
"default_title": "Measure-it"
},
"background": {
"scripts": [
"bg.js"
]
},
"permissions": [
"activeTab"
]
}