Free tool · Website Tag Inspector

Which tracking tags does your website run?

Type a web address. HangLine reads the page and its Google Tag Manager containers, then lists the tracking tags it finds, the ones set up twice, conversions that look missing, the cookie banner and the other technologies on the page. Free, no sign-up.

HangLine opens that page once, the way a search engine would. It keeps no copy of the page and no record of the address.

Questions

Is it free?

Yes. Up to 20 checks a day from one connection, no account needed.

Do you keep the address I type?

No. HangLine opens the page once and forgets it. To hold the daily limit it keeps only a count for the day against a code made from your connection, which changes every day; your IP address itself is never stored.

Why does my tag not show up?

Another script may add it after the page loads, it may sit only on some pages, or a platform may run it in its own sandbox (for example Shopify's customer events). HangLine's Tracking Health sees those too, because it checks from inside real visits.