Siteversary is a lightweight, zero-configuration plugin that shows when your WordPress site was born (created).

Instead of relying on a single (often unreliable) data point, Siteversary checks multiple signals – the oldest user registration, the oldest post (including the original “Hello world!”), and the oldest comment – and uses the earliest one as your site’s birthdate. The widget tells you which signal was used, so you always know where the date came from.

Perfect for:

Web developers managing multiple WordPress installations
Freelancers maintaining client sites
Website owners curious about their site’s origins
Celebrating site anniversaries

Features:

Dashboard widget showing the site birthdate in your own date/time format
Site age displayed in years, months and days
Countdown to the next site anniversary (with a little celebration on the day itself)
Multi-signal detection for reliable results even after migrations
Result is cached, so the widget adds no measurable load
Visible to administrators only
No settings, no tracking, no bloat – a single small file