AUDIT · FREE TOOL

Web App Manifest Viewer and field inspector

Find and inspect a website's web app manifest with readable app identity, launch scope, display, colors, icons, screenshots, shortcuts and capabilities.

  • Automatic manifest discovery
  • Readable launch and identity fields
  • Capability and asset counts
  • Resolved manifest URL
LIVE TOOL

Run a public production check

Read-only scan · HTTPS only · up to 12 requests per hour · no account required

https://
UNDERSTAND THE RESULT

How to use Manifest Viewer

Written and reviewed by the PWAs.app web platform editorial team.

01

Why inspect a web app manifest?

The manifest controls the installed app name, icon, colors, launch URL, scope and preferred window mode. Small mistakes can produce browser chrome, incorrect branding or an installation that opens the wrong path.

This viewer resolves the manifest from the public page and presents the fields that matter most for installation and packaging.

02

Fields worth checking first

Confirm that the app has a stable identity, a start URL inside its scope and a standalone-compatible display mode. Then verify that large and maskable icons are available.

Screenshots and shortcuts are not always required, but they make install surfaces and operating-system integrations more useful.

COMMON QUESTIONS

Manifest Viewer FAQ

Short answers about what the public tool checks and what remains under browser or website-owner control.

Can I paste a manifest.json URL directly?

Use the website URL that links the manifest. This lets the viewer resolve relative start URLs, scope and icons against the correct document origin.

Why does the viewer show a computed app identity?

When a manifest does not declare an explicit id, browsers derive identity from the resolved start URL. An explicit stable id is easier to maintain across URL changes.

Does the viewer change my manifest?

No. It is read-only. Use the Manifest Generator to create a replacement or compare suggested fields.