The plain-English version
A metadata file describing aspects of a web application’s presentation and identity to supporting browsers.
Why it matters
It is distinct from a package manifest that describes development dependencies.
Let’s make it click
The manifest can describe an app’s name, icons, and intended launch presentation.
Vibe Bro’s heads-up
A manifest alone does not supply a service worker, persistence, or a complete installation experience.
The docs behind it
Documentation links checked .
Editorial review · October 28, 2026
Supported: MDN documents JSON installation metadata such as name, icons, and start URL. The entry correctly distinguishes this from implementing storage/offline behavior.