Examine source code of Covid19

{
  "manifest_version": 2,
  "name": "Covid19",
  "version": "1.0.3",
  "default_locale": "en",
  "description": "Provides the cases details regarding Covid19 with respective to any Country",
  "browser_action": {
    "default_popup": "index.html"
  },
  "icons": {
    "16": "./icons/16covid-19.png",
    "64": "./icons/64covid-19.png",
    "128": "./icons/128covid-19.png"
  }
}