GA4 Live Check
Setup and data-quality checks via Admin and Data API. Streams, key events, enhanced measurement.
More on Live Check →
GA4 Audit: check your Google Analytics 4 property in minutes
The free GA4 checker tests tracking, data quality and Consent Mode v2 - straight from the official Google APIs and optionally the BigQuery export.
What is a GA4 audit?
A GA4 audit is a systematic check of your Google Analytics 4 property for completeness, data quality and privacy compliance. The GA4 Auditor checks configuration, event-level data quality, Consent Mode v2 and the on-page implementation - straight from the official Google APIs.
See the full GA4 audit checklist →Four audit methods in one tool
Pick the depth you need - from quick API checks to full BigQuery-grade analysis.
Traffic-Light Checks (BigQuery)
Event-level depth for data quality, duplicates, PII hints and funnel consistency from the raw export.
More on traffic-light checks →SST Analysis
Weighted score from cookie lifetime, attribution gap, funnel duration and cross-domain - shows whether server-side tracking pays off.
More on SST analysis →OnPage Checks
Headless-browser scan via Playwright, before and after consent. Detects 14 CMPs and 9 trackers.
More on OnPage checks →How it works
From login to first findings in under three minutes.
1
Sign in with Google
OAuth, read-only scopes, no password. Your GA4 credentials never touch our database.
2
Select a property
Pick a GA4 property and optionally connect the BigQuery export for deeper analysis.
3
Run the audit
Live API, traffic-light checks, SST score and OnPage scan - findings explained in plain language.
Privacy as architecture, not as promise
OAuth instead of passwords. Read-only instead of admin. EU hosting instead of trust-me.
OAuth, no passwords
Sign in with Google. Read-only scopes, short-lived in-memory tokens. We never see your credentials.
HMAC-hashed property IDs
Property identifiers are hashed before storage. Linkable for the user, opaque for an attacker.
EU hosting, GDPR-friendly
Infrastructure runs on Google Cloud in europe-west3 (Frankfurt). No US transfer for app data.
Ready to audit your properties?
Sign up free - the audit runs in your browser, no setup, no install.
Sign up freeWhat the GA4 Auditor delivers
Six focus areas - from API-driven live checks to GDPR-grade architecture.
What we audit
Tracking, data quality and Consent Mode v2 - end-to-end over the official Google APIs, optionally reconciled against the BigQuery export.
Features & test catalogue →Live check via GA4 API
Which events arrive today? Which property settings are suboptimal? In seconds, per stream, per day, per event type.
Live Check details →BigQuery deep analysis
Sessions, conversions, e-commerce, audience logic and page performance - straight from the raw export. See why BigQuery and live API can disagree.
Attribution: Live API vs. BigQuery →Consent Mode v2 audit
We check whether ad_user_data and ad_personalization flow correctly through your setup and whether Google's modelling is active.
More on Consent Mode →Multi-language & SEO-ready
Server-side rendered with FastAPI, Jinja2 and markdown-it-py. Fully indexable for search engines and LLM discovery, in DE and EN.
Read the blog →Read-only & EU-hosted
Login with Google, OAuth read-only scopes, HMAC-hashed property IDs. Infrastructure runs in europe-west3 (Frankfurt).
Privacy policy →Audit topics in depth
Six topic clusters - from tracking quality to consent. Each hub links the matching guides and help articles.
Tracking quality
Event schema, (not set), unassigned traffic and custom dimensions.
Tracking quality →Consent & privacy
Verify Consent Mode v2 and privacy-compliant tracking.
Consent Mode v2 →BigQuery & data modelling
Event-level data quality from the BigQuery export.
BigQuery audits →Attribution & acquisition
Attribute sources, gclid, self-referrals and cross-domain correctly.
Attribution audit →E-commerce tracking
Purchase events, deduplication, refunds and payment referrers.
E-commerce checks →Features & checklist
The full GA4 audit checklist - every check explained.
Audit checklist →Who is the GA4 Auditor for?
Agencies
Reproducible GA4 audits across many client properties - in minutes, with a clear traffic-light verdict to hand over.
In-house teams
Ongoing quality control of your own setup after every release, relaunch or CMP change.
E-commerce
Clean purchase events, deduplication and payment-referrer handling - so revenue in GA4 is trustworthy.
Frequently asked questions
- What is a GA4 audit?
- A GA4 audit is a systematic check of your Google Analytics 4 property for completeness, data quality and privacy compliance. It covers configuration (streams, events, key events), data quality at event level, Consent Mode v2 and the on-page implementation.
- What does a GA4 audit cost?
- The GA4 Auditor is free to use at its core - log in with Google, the audit runs in your browser. A manual agency audit costs significantly more depending on scope; the tool delivers the factual basis in minutes and makes recurring checks reproducible.
- What exactly does the GA4 Auditor check?
- Four methods: a live check via the Admin and Data API (configuration), traffic-light checks from the BigQuery export (data quality at event level), an SST analysis (server-side tagging potential) and an on-page scan before and after consent.
- Is the GA4 Auditor free?
- Yes, getting started is free. You sign in with Google (read-only), pick a property and start the audit - no installation, straight in the browser.
- How long does a GA4 audit take?
- The live check returns results in seconds to a few minutes. The in-depth BigQuery analysis depends on the data volume, but usually also runs in a few minutes.
- Do I need the BigQuery export?
- No, not necessarily. The live check and on-page scan work without it. With the BigQuery export enabled, the auditor lifts the analysis to event level - for duplicates, PII hints and funnel consistency.