Save Email to PDF on Gmail

manifest.json

{
  "action": {},
  "background": {
    "service_worker": "background.js"
  },
  "homepage_url": "https://gmplus.io?utm_source=gm-pdf",
  "content_scripts": [
    {
      "css": [
        "/css/button-index.css"
      ],
      "js": [
        "/content-scripts/button-index.js"
      ],
      "matches": [
        "*://mail.google.com/*"
      ],
      "run_at": "document_start"
    },
    {
      "all_frames": true,
      "js": [
        "/content-scripts/prefs.js",
        "/content-scripts/index.js"
      ],
      "matches": [
        "*://mail.google.com/mail/*save-as-pdf-jspdf*",
        "*://mail.google.com/mail/*save-as-pdf-print*"
      ],
      "run_at": "document_start"
    }
  ],
  "default_locale": "en",
  "description": "__MSG_description__",
  "host_permissions": [
    "*://mail.google.com/*"
  ],
  "icons": {
    "16": "/icons/16.png",
    "32": "/icons/32.png",
    "48": "/icons/48.png",
    "64": "/icons/64.png",
    "128": "/icons/128.png"
  },
  "manifest_version": 3,
  "name": "Save Email to PDF on Gmail",
  "options_ui": {
    "page": "options.html"
  },
  "permissions": [
    "storage",
    "downloads",
    "scripting"
  ],
  "storage": {
    "managed_schema": "schema.json"
  },
  "version": "1.0.2",
  "web_accessible_resources": [
    {
      "matches": [
        "*://mail.google.com/*"
      ],
      "resources": [
        "icons/icon-blue.svg",
        "icons/icon-red.svg",
        "assets/*.ttf",
        "inject/inject.js"
      ]
    }
  ],
  "update_url": "https://edge.microsoft.com/extensionwebstorebase/v1/crx"
}