Short links, u4
Hold u4 up to a mirror and it reads 4u. Five characters of domain, six of slug, and a redirect that runs in every Cloudflare city on earth.
How it works
Edge redirects
Every hop is served from the Cloudflare location nearest the click, out of KV. No origin, no cold start, no round trip to a database.
Clicks you can read
Per-link totals by day, country, referrer and device. Counted after the redirect is already on its way, so analytics never cost the visitor time.
Nothing to sign up for
Anonymous links work and keep working. An account buys you custom slugs, expiry dates, the dashboard and the API.
One call from the command line
Create a token in your dashboard, then:
curl -X POST https://u4.nz/api/links \
-H "Authorization: Bearer $U4_TOKEN" \
-d url="https://example.com/launch" -d slug=launch
{"slug":"launch","short":"https://u4.nz/launch","url":"https://example.com/launch"}