Holocene Epoch Timestamp

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "manifest_version": 3,
  "name": "Holocene Epoch Timestamp",
  "short_name": "HET",
  "description": "Add the Holocene Epoch timestamp (2023 CE becomes 12023 HE) before or after the timestamps present on the webpage (or replace them).",
  "version": "1.0.6",
  "author": "ly3xqhl8g9",
  "action": {
    "default_title": "Holocene Epoch Timestamp",
    "default_icon": "icons/icon.png",
    "default_popup": "popup.html"
  },
  "icons": {
    "16": "icons/icon16.png",
    "32": "icons/icon32.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "options_ui": {
    "page": "options.html"
  },
  "incognito": "spanning",
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "/jquery-3.1.1.min.js",
        "/contentscript.js"
      ],
      "run_at": "document_end"
    }
  ],
  "permissions": [
    "storage"
  ],
  "host_permissions": [
    "<all_urls>"
  ]
}