PWA Manifest Viewer — Validate Your Web App Manifest
View and validate the web app manifest of the current site — or paste your own manifest JSON. The viewer checks every required field against the Web App Manifest spec: name, short_name, start_url, display mode, colors, and icon sizes (192px and 512px), and flags warnings that could prevent a clean "Add to Home Screen" experience.
Everything is fetched and parsed locally in your browser — no manifest is sent anywhere.
PWA Manifest FAQ
Does this work on all browsers?
Our mobile testing tools work best on modern browsers (Chrome, Firefox, Safari, Edge). Some features may not be available on older browsers that lack Web API support.
Is my device data collected?
No. All device information is read locally from your browser APIs. No data is transmitted to our servers or stored anywhere.
Is it free to use?
Yes. This tool is completely free with no usage limits, sign-up requirements, or hidden fees.