Code Highlighter for Substack

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "name": "Code Highlighter for Substack",
  "version": "1.0.0",
  "description": "Highlights code blocks in Substack. It also copies code in one click and changes the font size. Supports 20+ programming languages.",
  "manifest_version": 3,
  "background": {
    "service_worker": "background.js",
    "run_at": "document_end"
  },
  "icons": {
    "16": "icon.png",
    "48": "icon.png",
    "128": "icon.png"
  },
  "content_scripts": [
    {
      "js": [
        "ExtPay.js",
        "content.js",
        "vendor/highlight.min.js",
        "vendor/highlight_pretty_addon.min.js"
      ],
      "css": [
        "vendor/default.min.css",
        "vendor/default_pretty_addon.min.css"
      ],
      "matches": [
        "https://*.substack.com/*"
      ],
      "run_at": "document_start"
    }
  ],
  "action": {
    "default_popup": "popup.html"
  },
  "permissions": [
    "storage",
    "webNavigation"
  ],
  "host_permissions": [
    "http://*/*",
    "https://*/*",
    "http://*.substack.com/*",
    "https://*.substack.com/*"
  ]
}