manifest.json (web app manifest)

A web app manifest tells browsers how your site should behave when installed as a PWA (name, icons, theme color, start URL).

Why you should include it

• Enables nicer “Add to Home Screen” experience on Android.
• Defines app icons for installed web apps.
• Allows controlling theme/background colors.

Minimal example

{
  "name": "Your Site",
  "short_name": "Site",
  "start_url": "/",
  "display": "standalone",
  "background_color": "#ffffff",
  "theme_color": "#ffffff",
  "icons": [
    {"src": "/icons/android-chrome-192x192.png", "sizes": "192x192", "type": "image/png"},
    {"src": "/icons/android-chrome-512x512.png", "sizes": "512x512", "type": "image/png"}
  ]
}