I built ConsentCheck because Consent Mode v2 enforcement keeps breaking Google Ads attribution in silent ways, GA4 shows data, Ads conversions vanish, modeling fails, and most tools are just static checkers that miss real browser timing issues.
It's a free browser-based scanner that:
Loads your site in real Chromium
Simulates first-visit + reject consent → accept consent flows
Checks actual cookies set, network requests (GA/Ads/Meta/etc.), consent signals, banner behavior, TCF mismatches
Flags pre-consent fires, defaults not denied properly, conversion tracking issues, etc.
Live stats from 350 anonymized scans (Feb 2026, no URLs stored):
62% of sites fire tracking before consent
7% lose Google Ads conversions due to consent mismatches
14% have critical failures (FAIL verdict)
I recently added $9/mo monitoring (weekly automated re-scans + email alerts on changes) because re-testing sites showed almost everything breaks again within weeks (plugin updates, CMP patches, new tags, etc.).
It's bootstrapped/solo, no login needed for the free scan: https://consentcheck.online
Monitoring trial starts from scan results page (14-day free, no card upfront).
Curious what HN thinks — does this solve a real pain for anyone running Ads with EEA traffic? What's the worst Consent Mode break you've seen lately? Feedback very welcome (good or brutal).
Thanks!
Hey HN,
I built ConsentCheck because Consent Mode v2 enforcement keeps breaking Google Ads attribution in silent ways, GA4 shows data, Ads conversions vanish, modeling fails, and most tools are just static checkers that miss real browser timing issues. It's a free browser-based scanner that:
Loads your site in real Chromium Simulates first-visit + reject consent → accept consent flows Checks actual cookies set, network requests (GA/Ads/Meta/etc.), consent signals, banner behavior, TCF mismatches Flags pre-consent fires, defaults not denied properly, conversion tracking issues, etc.
Live stats from 350 anonymized scans (Feb 2026, no URLs stored):
62% of sites fire tracking before consent 7% lose Google Ads conversions due to consent mismatches 14% have critical failures (FAIL verdict)
I recently added $9/mo monitoring (weekly automated re-scans + email alerts on changes) because re-testing sites showed almost everything breaks again within weeks (plugin updates, CMP patches, new tags, etc.). It's bootstrapped/solo, no login needed for the free scan: https://consentcheck.online Monitoring trial starts from scan results page (14-day free, no card upfront). Curious what HN thinks — does this solve a real pain for anyone running Ads with EEA traffic? What's the worst Consent Mode break you've seen lately? Feedback very welcome (good or brutal). Thanks!