container audit
GTM-5C3RG5M
2 tags, 2 custom scripts, 2 third-party hosts — an ordinary container, near the middle of what we measure (median: 39 tags, 4 custom scripts).
- 2 custom HTML tags carrying 0 KB of JavaScript. This runs on every page the container loads on.
- 2 third-party hosts reachable from its tags.
Tags2
Custom scripts2
Third parties2
Delivered358 KB
Versions27
What we observed
A real browser loaded subaru.co.jp a month ago and recorded every request it made. This is what happened, as distinct from what the container is configured to do. It is one page load — anything that fires only deeper in the site did not fire here.
Container loaded from
googletagmanager.com — GoogleMeasurement sent to
google-analytics.com — GoogleConsent
OneTrust answered its own API. 3 measurement hits left the page before it was granted, carrying a client id (whether that is permitted depends on jurisdiction, and this was not a European visit). no new hosts appeared after granting — either the tags are ungated, or they fire regardless and record the decision. 6 advertising hosts were contacted before anything was granted.
Third parties contacted
25 hosts — cache.dga.jp, www.googletagmanager.com, rsv.dga.jp, cdn-au.onetrust.com, geolocation.onetrust.com, www.google-analytics.com, www.clarity.ms, cs.nakanohito.jp, and 17 more
dataLayer events seen
gtm.js, gtm.dom, gtm.triggerGroup, OneTrustLoaded, OptanonLoaded, gtm.load
Where the data goes
Not observed — on the page we loaded, measurement went to Google and nowhere else. observed on subaru.co.jp More info »
Findings
Ordered by consequence. review has a concrete cost when it bites; info is real but depends on your setup. Seen is how common it is across the containers we have measured — reported separately on purpose, because common and harmless are different claims.
reviewdocument.write (2)
2 pieces of custom code call document.write.
Whydocument.write blocks the HTML parser while it runs, and browsers ignore it entirely once the page has finished parsing — so an async-loaded tag using it can silently do nothing.
CheckIf these tags fire on page load they are costing render time; if they fire later they may not be working at all. Worth confirming the tag still does what it was added to do.
Seenseen in 18.4% of 46,522 containers measured
infoConsent configuration detected (1)
The container declares one or more consent signals.
WhyConsent handling is present in the container. This describes what the artifact declares; what actually happened on the page is measured separately, above.
CheckConfirm these settings match the consent policy you intend to enforce, and compare them with the before-and-after observation.
Seenseen in 44.6% of 46,522 containers measured
Third parties it can reach
Each host is a party that can execute code or receive data in a visitor's browser. Follow one to see who else loads it. More info »
Detected on
Sites observed loading this container. A container used across many hosts is a shared template; one on a single host is a bespoke build. Follow a site to see every container it loads.
What this audit describes
Containers change. These findings describe one specific artifact, and you can re-fetch it to check this reading.
| Container | GTM-5C3RG5M |
|---|---|
| Published version | 27 — the identity of this configuration. It changes only when someone publishes. |
| Read at | 2026-08-23 17:28:41 UTC (a month ago) |
| Source | https://www.googletagmanager.com/gtm.js?id=GTM-5C3RG5M |
| Body checksum | 4333d2384712e1bf581ce30a36a20ff03cb35a1a9f96810e63c9dfa9d94d88ecEvidence of the exact bytes we read, not an identity: Google varies the response per request, so re-fetching an unchanged container yields a different checksum. Compare the published version instead. |
Re-audit
This reading is from a month ago. A container can be republished at any time, and nothing here updates on its own — a fresh read is the only way to know whether it still says this. Running it again replaces this page in place, so the link keeps working.
Put this container under version control. Tagora exports it to a repository you own, so every change arrives as a pull request. How it works »