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Plan a trip Part of Pro

Save a trip's map for offline

Pro stores the map around every stop and along the roads between them on your phone, so the map still draws with no signal.

2 min read Updated 2 questions answered
On this page

The last stretch of road into a park, the valley floor, the metro platform: the plan is most useful exactly where the signal is not. Every plan opens your trips read-only with no signal, in the browser where you last edited them. On Pro, Treader also saves the map for the whole trip into the browser on your phone.

Save it

  1. 1 On the phone you will carry, open the trip, then the Trip Hub.
  2. 2 On Overview, find the Offline map card. It shows roughly how many map tiles and how many megabytes the trip needs.
  3. 3 Tap Save for offline and keep the tab open while it downloads. The card counts the tiles as they arrive.
  4. 4 Change the stops later and the card offers Update. Remove frees the space.

What gets saved

  • The standard map in detail around every stop, and the roads between stops on the same day at a coarser zoom.
  • Up to about 2,000 tiles a trip. A very long trip is saved stops first, then the roads as far as the limit reaches, and the card tells you when that happened.
  • The plan itself is not in the download. Every plan keeps a read-only copy, refreshed every time the plan saves, so the trip opens even when Treader cannot reach its servers.
  • Satellite and Terrain are not saved. They are not ours to store, so they are switched off while the device is offline.

Using it with no signal

Open treader.ca in the same browser you saved from. The trip opens read-only and the map draws. Edits wait until you are back online, so the copy on your phone never overwrites the live plan. On iPhone, add Treader to the Home Screen first so Safari keeps the files; a private window usually refuses to store them at all.

Tip

Save on wifi the night before, then open the trip once with the signal off to be sure. The offline map is the map; for a printed fallback see Save a guide to read later.

Common questions

Does Treader work offline?
Yes, read-only on every plan: your trips open with no signal in the browser where you last edited them. Pro also saves the trip map on your phone, so the map draws too. Editing and live features need a connection.
How much space does an offline map take?
It depends on the trip. The Offline map card on the Trip Hub shows the estimate before you save, and a trip is capped at about 2,000 tiles.