Features
Offline Mode — Fully Offline Live Slide Sync | Immersia
Immersia works fully offline. Every slide, image, and media file loads from device cache — no internet required. No disruption when coverage drops. No stress when the Wi-Fi cuts out.
How offline mode works
Content is pre-cached on your device
When you open Immersia with a connection, every slide, image, and audio file downloads to your device cache automatically. From that moment, your tour lives on your phone — no server, no streaming, no dependency.
Slide sync works locally
When you swipe to the next slide, every guest sees it instantly. The sync engine runs on the device — no round trip to a server, no lag while signals bounce between towers.
Guests join the same way
They scan the QR code, the page opens from cache, and they are in — no app store, no data connection required. The experience loads from their phone, not from a distant server.
Seamless fallback when coverage drops
If the internet cuts out mid-tour, nothing changes. Slides keep syncing, guests keep following, and you keep guiding. When the connection returns, analytics and session data sync quietly in the background.
Why offline matters
Where offline mode shines
Walking tours
Historic city centres with narrow streets and thick walls. Rural trails with patchy signal. Immersia works everywhere your feet go.
Museums and galleries
Basement galleries, listed buildings, concrete and steel construction — places where mobile signal simply does not reach.
Bus and boat tours
Moving through zones with inconsistent coverage. Slides keep syncing as the vehicle moves — connection or not.
Remote attractions
Archaeological sites, nature reserves, mountain viewpoints. Anywhere you would not expect a signal, your tour still runs.
Conferences and events
Hotel ballrooms overloaded with 500 competing connections. Your slide sync does not join the fight for bandwidth.
Disaster recovery
Not a feature you hope to use — but if the venue Wi-Fi crashes three minutes before your keynote, Immersia is already running on every device.
How it works under the hood
Immersia is a PWA — a Progressive Web App. Unlike a traditional website, a PWA installs core resources to your device the first time you open it. The service worker intercepts every request and serves from cache first. When you upload a tour, all media is pre-cached on your device. When a guest scans your QR code, the same files pre-cache on theirs. From that point forward, everything runs locally — no server calls for slide changes, no streaming for media, no dependency on a stable connection.
When a connection is available, Immersia syncs analytics, session data, and any offline changes quietly in the background. You do not need to do anything. It just works.
Ready to go offline?
Create a free account, upload a tour, and test it yourself. Turn on airplane mode and run through your slides — you will see the sync still works, instantly, without a connection.
Explore related
See how offline mode complements the rest of the Immersia platform.
Free to try · 1 tour, 50 photos, 1 GB · No card required