About Atlas
Atlas highlights the cities you've visited as colored regions on a world map.
It's free, has no ads, and runs entirely in your browser. Search any city, click to add it, and the map updates instantly. Your data stays local by default; signing in with Google syncs it across devices.
Why this exists
Most travel maps either colour whole countries — too coarse if you've only seen one city — or sit behind signups and ads. Atlas does neither: precise city-level shading, no account required, and your map is yours.
Privacy
Atlas runs in your browser. Without signing in, your data never leaves your device. If you sign in with Google, Atlas syncs your map to your account so it follows you across devices.
Without signing in
Your city list, language, and map-style preference are stored in your browser's local storage. No cookies, no analytics, no tracking.
After signing in with Google
To sync your map, the following is stored on Google's servers:
- Identity (Firebase Auth): your Google account ID, email, display name and profile photo URL — supplied by Google when you sign in.
-
Cities (Cloud Firestore, under
users/{your-id}/cities/): each city's name, country, coordinates and the highlighted area's geometry. Plus a small per-account counter used to enforce a 5000-city cap.
Removing your data
- Click Delete all in the sidebar to remove every city, locally and from Firestore.
- Sign out to end your session in this browser. Data already in Firestore stays under your account until you delete it.
- To delete the Google sign-in record itself, email enable JavaScript to see the contact email with the subject "Atlas — delete account" and the Google email you signed in with.
Third parties
Google handles authentication and stores your data. Their privacy
policy applies:
policies.google.com/privacy. The sign-in flow sets cookies on accounts.google.com; those are
first-party to Google.
Map tiles (OpenStreetMap, CartoDB) and the Nominatim search service receive your IP and the request as part of serving the map and search — standard for any map application.
Atlas itself uses no analytics, no advertising, and no third-party cookies.