Does VWO require cookie consent?

Consent is normally required when the tracker stores or accesses non-essential device information, collects analytics identifiers, powers advertising, records sessions, or transmits personal data before a user has opted in.

How does ConsentLens detect VWO?

ConsentLens checks known network domains, JavaScript globals, script source patterns, and inline script snippets, then compares the matched tracker against the page load timing and consent banner state.

How often does VWO fire before consent?

In the latest public ConsentLens scan dataset, 100% of sites where VWO was detected fired it before consent.

AnalyticsMedium consent risk

VWO GDPR compliance and consent risk

Visual Website Optimizer (VWO) provides A/B testing and conversion optimisation. This page combines ConsentLens detection rules with live public scan data so you can see how often VWO appears, whether it fires before consent, and which compliance issues it tends to create.

Scan your website View global tracker stats

Of scanned sites

2 of 384 public sites include VWO.

100%

Fire before consent

2 detected sites fired it before a user could consent.

Seen after rejection

No post-rejection evidence found in public scan data.

MEDIUM

Consent risk

Analytics tracker classified from ConsentLens tracker database.

How ConsentLens detects VWO

Domains

visualwebsiteoptimizer.com
dev.visualwebsiteoptimizer.com

Globals

window._vwo_code

Script patterns

vwo.js

ConsentLens combines these signals with request timing. If VWO sends a data request during the first 500ms of page load, it is treated as a pre-consent tracking risk and connected to the relevant scan evidence.

Common compliance issues

Long-lived cookies detected

VWO bypasses consent banner

Pre-consent tracking guide Cookie consent requirements How scoring works

Example public scans detecting VWO

Domain	Score	Consent timing
it-solve.pl	48/100	Before consent
anadea.info	48/100	Before consent