Kontrast - WCAG Contrast Checker

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "name": "Kontrast - WCAG Contrast Checker",
  "version": "1.1.9",
  "description": "Quickly check and adjust contrast in realtime in your browser to meet WCAG 2.1 requirements.",
  "content_security_policy": "script-src 'self' https://ssl.google-analytics.com; object-src 'self'",
  "permissions": [
    "*://*.gumroad.com/*",
    "storage",
    "activeTab",
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ],
      "css": [
        "content.css"
      ]
    }
  ],
  "browser_action": {
    "default_icon": {
      "16": "images/kontrast16.png",
      "32": "images/kontrast32.png",
      "48": "images/kontrast48.png",
      "128": "images/kontrast128.png"
    }
  },
  "icons": {
    "16": "images/kontrast16.png",
    "32": "images/kontrast32.png",
    "48": "images/kontrast48.png",
    "128": "images/kontrast128.png"
  },
  "web_accessible_resources": [
    "content.css",
    "iframe.html"
  ],
  "manifest_version": 2
}