An offline-first PWA checklist

Twelve checks we run before calling a progressive web app offline-ready.

  • 6 min read
  • PWA
Cover graphic for “An offline-first PWA checklist”

Storage first

Read from local storage first, then refresh in the background. The network should never block the UI.

  • Precache the app shell
  • Store user data in IndexedDB
  • Version every cache

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Testing offline

Run the end-to-end suite once online and once with the network disabled; both runs must pass.

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