Turning coordinates into a picture

GeoJSON and GPX files are just lists of coordinates and shapes in text, which tells you nothing at a glance. This draws them out visually, so a GPX track from a run or ride becomes a line you can follow, and a GeoJSON file of points and regions becomes a map you can read. It is the fastest way to check that a file contains what you think it does before you use it somewhere else.

Drop in the file and the points, lines and areas are plotted for you to inspect.

Check before you use

Seeing the data first catches the mistakes that are invisible in raw text: a track that jumps because of a bad GPS point, coordinates that landed in the wrong hemisphere, an empty or malformed file. For anyone working with location data — mapping, fitness exports, geo datasets — a quick visual confirmation saves a lot of confusion further down the line, and it all happens locally with nothing uploaded.

How to view GeoJSON and GPX files

1. Add your GeoJSON or GPX file.
2. See the routes, tracks and points drawn out.
3. Inspect the data behind them.

Making sense of location data

GPX files come from GPS devices and fitness apps as recorded tracks; GeoJSON is the web standard for describing points, lines and areas. Both are unreadable as raw text, and plotting them is the only practical way to check a route recorded correctly or a boundary sits where it should.

It is a quick way to verify data before importing it somewhere else — spotting a stray point on the other side of the world is instant visually and nearly impossible in the file.

Questions & answers

More Image tools