city.json checker.

For city pages in the Fab City Network. Paste your file, or point at your page — nothing is uploaded, everything runs in your browser.

Check your live page

Your page address (github.io preview or yourcity.fab.city)

— or —

Check the file itself

Paste the full content of city.json

Part of the Fab City Network · Template repository · Same rules as the repository's automatic commit check, plus a reminder while is_sample is still true.