Tools

Tile Quiz

Tile Inspector Turn a place and zoom into an exact map tile.
Map Stack Browse and compare basemap styles side by side.
Tile Quiz A short quiz on how web map tiles work.
Map Review Preview and style GeoParquet, COGs, PMTiles, and more.
Zoom Levels How tile zoom maps to the slippy grid and ground resolution.
Layer Stack Explode image layers into a customizable 3D stack.
Map Stylesheets A contact sheet of a MapLibre style across every zoom.

T menu · 1–7 jump while open Pick a tool

Five tiles. One round.

XYZ addresses, the zoom pyramid, and a few Mercator quirks.

Score 0/5

z0

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z1

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z2

Question 01 of 05

Slippy grid

Sample OpenStreetMap raster tile for this question

At zoom 0, how many tiles cover the usual slippy-map world?