Merlin
SpacingJS

SpacingJS

Measure the spacing between elements on webpage. Hold down Alt (Windows) / Option (Mac) key, and move the cursor.

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manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "manifest_version": 3,
  "name": "SpacingJS",
  "version": "1.0.7",
  "action": {},
  "description": "Measure the spacing between elements on webpage. Hold down Alt (Windows) / Option (Mac) key, and move the cursor.",
  "icons": {
    "16": "icon16.png",
    "48": "icon48.png",
    "128": "icon128.png"
  },
  "author": "Steven Lei",
  "homepage_url": "https://spacingjs.com",
  "permissions": [
    "activeTab",
    "scripting"
  ],
  "background": {
    "service_worker": "background.js"
  }
}