manifest.json

{
  "manifest_version": 3,
  "version": "0.3.7",
  "name": "Save as MHTML",
  "description": "__MSG_description__",
  "default_locale": "en",
  "background": {
    "service_worker": "worker.js"
  },
  "permissions": [
    "storage",
    "pageCapture",
    "activeTab",
    "downloads",
    "contextMenus",
    "notifications",
    "scripting"
  ],
  "homepage_url": "https://add0n.com/save-as-mhtml.html",
  "icons": {
    "16": "data/icons/16.png",
    "32": "data/icons/32.png",
    "48": "data/icons/48.png",
    "64": "data/icons/64.png",
    "128": "data/icons/128.png",
    "256": "data/icons/256.png",
    "512": "data/icons/512.png"
  },
  "action": {},
  "options_ui": {
    "page": "data/options/index.html"
  },
  "web_accessible_resources": [{
    "resources": ["data/toolbar/index.html"],
    "matches": ["*://*/*"]
  }],
  "commands": {
    "_execute_action": {
      "description": "Press the action button"
    }
  }
}