timeconvert/public/manifest.json

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Convert time to h",
  "icons": {
    "192": "logo192.png",
    "512": "logo512.png"
  },
  "browser_action": {
    "default_icon": "logo192.png",
    "default_title": "Converttime",
    "default_popup": "index.html"
  }
}