PWA quiz

Test your PWA knowledge with a free interactive quiz — 50 questions with answers and explanations. No signup needed to play.

What does the `purpose: "maskable"` icon hint allow?

1. What does the `purpose: "maskable"` icon hint allow?
2. What does `clients.claim()` do?
3. What does `scope` in the manifest control?
4. What does "PWA" stand for?
5. What does `<link rel="manifest">` do?
6. Which caching strategy fits hashed static assets (e.g. `/_next/static/[hash].js`)?
7. A PWA wants to show "You are offline" when navigation fails. How?
8. What is required to register a Service Worker in production?
9. On Android Chrome, what generally must be true for the install prompt to appear?
10. Which icon sizes does a Web App Manifest typically need?
11. A SW serves a stale response from the cache while updating in the background — which strategy is this?
12. After an SW deploy, why might users keep seeing the old version?

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