Merlin
Rule-of-20

Rule-of-20

It notifies you every twenty minutes about the 20-20-20 rule to prevent eye strain.

Merlin
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manifest.json

{
  "name": "Rule-of-20",
  "description": "It notifies you every twenty minutes about the 20-20-20 rule to prevent eye strain.",
  "version": "0.0.1",
  "manifest_version": 3,
  "content_security_policy": {
    "extension_pages": "script-src 'self'; object-src 'self'"
  },
  "action": {
    "default_title": "Rule-of-20",
    "default_popup": "index.html"
  },
  "background": {
    "service_worker": "background.js"
  },
  "permissions": [
    "tabs",
    "storage",
    "alarms"
  ],
  "icons": {
    "16": "icons/logo_16x16.png",
    "32": "icons/logo_32x32.png",
    "48": "icons/logo_48x48.png",
    "128": "icons/logo_128x128.png"
  },
  "update_url": "https://edge.microsoft.com/extensionwebstorebase/v1/crx"
}