Offline storage

ARO Field Atlas is offline-first: the entity registry, your watch list, and recent map tiles can live on your device so the site stays usable when you roam through a valley with no cell coverage.

Regional map packs

Download a country's tiles + entity bundle so the map renders without a connection.

Switzerland (CH) ~132.7 MB
Liechtenstein (LI) ~2.5 MB Planned
Dominican Republic (DO) ~45.0 MB Planned
France (FR) ~171.4 MB

Installing an atlas downloads the map tiles + every entity in that country, so the full registry stays browsable offline.

Advanced

Include activation history Adds the per-entity QSO log (callsigns, dates, mode totals). Several MB per country. Useful for "has anyone been here?" offline.

Entity cache

Entities stored locally: 0
Entity detail pages cached: 0
Last synced: never
Pending mutations (outbox): 0

What's plumbed today

✓ Installable as an app (Add to Home Screen / Install).
✓ Shell stays cached for offline navigation.
✓ Entity registry mirrored to a local database (IndexedDB or wa-sqlite when supported).
✓ Mutations queued in an outbox + flushed when connectivity returns.
◷ Regional map packs (PMTiles) — bytes persisted, MapLibre wire-up landing soon.

Test offline mode

Toggle on to simulate a complete network drop. The page overrides fetch() to block cross-origin requests and route same-origin calls through the service-worker cache only. Use this to verify which pages survive offline + which silently break.

Force offline (test mode)