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Live tag testing
Replay user journeys in headless Chrome and verify every tag fires – before you push to production.
The SEO Control Plane·Tag Management
Tag management that knows when a tag breaks your rankings
Audit your existing GTM container, test tags before they break production, and deploy structured-data, conversion and tracking tags in one click.
Free plan · No credit card · First audit in 90 seconds
semoptimiser.com/tag-management
Tag Management
GTM Container
47
tags
12
triggers
0
broken
Active tags
GA4 – Page Viewlive
Meta Pixel – Purchaselive
LinkedIn Insightpaused
Hotjar – Recordinglive
GTM – Custom Eventdraft
+217 indexed
LCP 2.4s → 1.1s
1-click fix
Why marketers love it
GTM without the broken tags
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Container audit
Surface duplicate tags, unused triggers, missing variables and outdated GA tags in your existing GTM container.
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One-click deploy
Push GA4, Meta Pixel, conversion linker, FAQ schema and 30+ tag templates without a developer.
Features
A full tag toolkit
● 6 capabilities · auditable
Container scanner
Crawl any site and detect installed GTM, GA, Meta, Hotjar, LinkedIn, TikTok and 100+ scripts.
Tag conflict detection
Catch when two tags duplicate-fire on a single pageview, inflating your conversion counts.
Schema generator
Build Article, Product, FAQ, HowTo and Breadcrumb JSON-LD via a form – no schema.org knowledge required.
Server-side tagging
Spin up an sGTM endpoint and migrate Meta + GA4 to server-side in minutes.
Consent mode v2
Auto-wire Google Consent Mode v2 with default-denied and any major CMP (Cookiebot, OneTrust, Iubenda).
Version diffing
See what changed in your container between any two versions, with a one-click rollback.
How it works
Get started with SEMOptimiser Tag Management in 3 steps
1
STEP 01
Connect GTM or paste a URL
OAuth into Tag Manager, or simply enter a URL – we detect every script firing on the page.
2
STEP 02
Run the live test
A real browser visits each page, triggers user interactions and records which tags fire when.
3
STEP 03
Fix and deploy
Apply suggested fixes to your container with one click. No developer ticket required.
FAQ
Frequently asked questions
- You can use it that way, or keep GTM and use SEMOptimiser to audit + test your container. Most teams do the latter.
One platform. Five fewer subscriptions.
Audit, index and rank –
without a fifth subscription.
Join 1,200+ agencies and in-house teams using SEMOptimiser to replace Semrush, Ahrefs, GA4 add-ons and rank trackers – with one workflow that actually ships fixes.
No credit card Cancel anytime
Aggregate impact
What 1,200+ teams shipped last 30 days
$2.4M
ad waste recovered
48,200
SEO issues auto-fixed
3.1M
URLs indexed in Google
14
AI surfaces tracked daily
Tools replaced
SemrushAhrefsScreaming FrogAccuRankerGA4 add-ons