Examine source code of PX to REM

{
  "name": "__MSG_extensionName__",
  "description": "__MSG_extensionDescription__",
  "author": "Arthur Arakelyan",
  "version": "1.4.3",
  "manifest_version": 3,
  "default_locale": "en",
  "action": {
    "default_popup": "index.html",
    "default_icon": {
      "16": "logo16.png",
      "32": "logo32.png",
      "48": "logo48.png",
      "128": "128.png",
      "256": "logo256.png"
    }
  },
  "icons": {
    "16": "logo16.png",
    "32": "logo32.png",
    "48": "logo48.png",
    "128": "128.png",
    "256": "logo256.png"
  },
  "background": {
    "scripts": [
      "service-worker.js"
    ]
  },
  "sidebar_action": {
    "default_title": "__MSG_extensionName__",
    "default_panel": "sidepanel.html",
    "default_icon": {
      "16": "logo16.png",
      "32": "logo32.png",
      "48": "logo48.png",
      "128": "128.png",
      "256": "logo256.png"
    },
    "open_at_install": false
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "px-to-rem@cssunitconverter.com",
      "strict_min_version": "78.0"
    }
  }
}