Consent Mode v2 and GPC: How They Fit
Google Consent Mode v2 and Global Privacy Control solve related problems through different mechanisms. What each one does, where Google documents GPC, and how to test your tags.
How-to guides
Step-by-step implementation: detecting and honoring opt-out signals, and testing what fires before a visitor chooses.
13 articles, newest first
GPC on Shopify: What Native Settings Miss
Shopify honors Global Privacy Control automatically in the regions you configure, but pixels and apps you installed yourself are your responsibility. What to check before Black Friday traffic arrives.
Holiday Tag Freeze: Audit New Pixels Before BFCM
Marketing adds tags every November, and tag manager changes rarely get a privacy review. A pre-freeze checklist for finding new pixels that ignore GPC before Black Friday traffic arrives.
Meta Pixel and GPC: Checking Limited Data Use
Meta's Limited Data Use flag is something your site sets; the pixel does not read a visitor's GPC signal for you. Here is the documented setup, and how to confirm in DevTools that your California traffic actually carries it.
GPC Signal Detected: What It Means (Live Test)
"GPC signal detected" means your browser or an extension is sending Global Privacy Control, a request not to sell or share your data. Check whether your browser is sending it right now, what sends it, how to turn it off, and what a site has to do when it detects it.
How to Honor GPC in Google Tag Manager
Tag Manager has no built-in Global Privacy Control variable. Here is how to read the signal, set a consent default before any other trigger runs, and require consent on the tags that sell or share.
Governing law
The provisions these articles turn on, with the text and a plain-language summary of each.
Earlier in how-to guides
September 20261 article
August 20264 articles
April 20261 article
February 20261 article
More topics
- Enforcement14CalPrivacy and Attorney General actions, broken down by what regulators cited and what it means for a live website.
- Compliance guides12What the CCPA, CPRA, and neighboring California laws require, explained in plain language with the statute cited.
- CMP blind spots4Where a consent platform's configuration and a site's production behavior drift apart, and how to verify it independently.
- Research & case studies2Original benchmarks and audits built from real scans, with the methodology published alongside the numbers.
Put it to work
Test your own site's Global Privacy Control handling
The free check sends a real GPC signal to one URL and shows whether marketing trackers stop. The full audit runs free from our homepage with no account; paying unlocks its evidence.