Introduction
Deploy GDPRChecker with Google Tag Manager while preserving Consent Mode v2 defaults and preventing tags from racing ahead of consent.
What it means
Create the GDPRChecker Custom HTML tag and use the Consent Initialization – All Pages trigger so it executes before standard page-view tags.
Set Google Consent Mode v2 defaults to denied before Google tags run, then let the banner update state after a valid visitor choice.
Do not leave GA4, Google Ads, Meta, or other optional tags on unconditional All Pages triggers when they write cookies or send personal data before consent.
Use GTM Preview, a private browser session, and an independent GDPRChecker scan to verify both tag order and observable network behavior.
Why it matters
GTM centralizes tags but does not make them consent-aware automatically. A single All Pages trigger can bypass an otherwise correct banner.
Common mistakes
- Treating a copied snippet as installed without verifying a live runtime heartbeat.
- Placing the consent runtime after GTM, analytics, advertising pixels, or theme-injected scripts.
- Publishing a configuration change without testing a clean browser session and the Reject all path.
- Applying a broad blocking rule without reviewing the detected provider and category first.
Practical checklist
- Confirm domain ownership and open the site-specific Privacy Setup flow.
- Install or update the GDPRChecker runtime before non-essential tracking code.
- Publish the banner configuration and verify its live heartbeat.
- Test initial visit, Reject all, analytics-only, Accept all, and withdrawal in a private window.
- Run a compliance scan and keep the resulting evidence with the release record.
- Enable scheduled scans so later tag, plugin, theme, or campaign changes are detected.
How GDPRChecker helps
GDPRChecker provides Consent Mode v2 verification, live runtime evidence, and scanner findings that show whether requests still fire before interaction.
When scheduled scans detect a new third-party signal, Growth users can review and confirm a blocking suggestion rather than editing website source code blindly.