WP Theme Checker

What version of WordPress is this site running?

Paste any URL and we read the WordPress core version from several signals — the generator tag, readme, feeds, and asset version strings — and tell you whether it is current or behind on security updates. Free, no signup.

Multi-source detection

We never trust a single signal. The generator tag is easiest, but sites strip or fake it, so we also read the readme, feeds, and asset version strings.

Out-of-date flag

A version more than two minor releases behind the current series is flagged, so you can see at a glance whether the site is due for a core update.

The full stack

The same scan also identifies the theme, active plugins, hosting provider, and runs an AI design audit — not just the version number.