Visualize PostGIS Geometry on a Map Without QGIS

Sometimes you just need to see a geometry — is that polygon in the right place? did the buffer come out as expected? Firing up QGIS for a five-second check is overkill. You can inspect any PostGIS geometry in the browser with a single query.

Step 1 — export the geometry as text

SELECT ST_AsText(geom) FROM parcels WHERE id = 42;
-- POLYGON ((-77.03 -12.04, -77.02 -12.04, -77.02 -12.03, -77.03 -12.03, -77.03 -12.04))

For several rows at once, aggregate them into a single collection so they render together:

SELECT ST_AsText(ST_Collect(geom)) FROM parcels WHERE zone = 'A';

Step 2 — paste into the viewer

Drop that WKT into the WKT viewer and it is drawn on an interactive map instantly — no signup, no install. You can pan, zoom, switch basemaps, and confirm the geometry is where it should be.

Going beyond a quick look

If you need more than a glance — styling layers, running Buffer/Union, editing an attribute table, or sharing a link with a teammate — you can save the map to a WKT Studio project and even push features programmatically through the REST API. But for a fast visual check, the copy-paste flow above is all you need.