Paste manifest.json and check required PWA fields, display mode, start URL, scope and icon sizes.
This validator is for checking a web app manifest before a PWA release or a Lighthouse retest. Paste the manifest JSON and review the fields that commonly affect installability and app presentation.
What it checks
The report reviews name, short_name, start_url, scope, display, theme_color, background_color, 192×192 and 512×512 icons, maskable icon purpose and missing icon fields.
Scope
The page does not fetch your site or test service worker registration. It validates the pasted manifest JSON locally in the browser.