GTFS feeds are the backbone of public transit data - but actually seeing what's inside one has always been far harder than it should be.
The old workflow usually went something like: unzip the feed, write a script to parse routes.txt and stops.txt, spin up QGIS or another GIS tool, load the shapes, and spend 20 minutes configuring things - just to answer a basic question like "do these two routes actually overlap here?" That's a lot of friction for what should be a 10-second sanity check.
TransitLens is a browser-based GTFS viewer — no installation, no account required.
Drop in a GTFS ZIP or paste a feed URL and instantly see all routes and stops on an interactive map, filter by route, agency, or transport type, click stops to inspect metadata, and explore schedules and service calendars. Supports GeoJSON and KML overlays for spatial and coverage analysis.
Built for transit developers, GTFS engineers, planners, and agencies.
