application/*
application/manifest+json
File extensions: .webmanifest
PWA manifest describing installation metadata.
What is application/manifest+json?
application/manifest+json is the media type for a Web App Manifest — a JSON document that describes a Progressive Web App's name, icons, theme color, and installation behavior.
Typical usage
Linked from HTML via <link rel="manifest">. Required for PWA install prompts.
HTTP header example
Response header
Content-Type: application/manifest+json; charset=utf-8Reference
W3C Web App Manifest
Frequently asked questions
What is the application/manifest+json MIME type?
application/manifest+json is the media type for a Web App Manifest — a JSON document that describes a Progressive Web App's name, icons, theme color, and installation behavior.
What file extension does application/manifest+json use?
Files served as application/manifest+json typically use the extension .webmanifest. The most common is .webmanifest.
How do I set the Content-Type for application/manifest+json?
Send the HTTP response header Content-Type: application/manifest+json; charset=utf-8. Linked from HTML via <link rel="manifest">. Required for PWA install prompts.
Is application/manifest+json an official MIME type?
Yes. application/manifest+json is officially registered with IANA (W3C Web App Manifest), so standards-conformant clients recognize it.