At a glance
| Provider | VWO |
|---|---|
| Category | Analytics |
| Consent required? | Yes |
| Typical domain | Varies (first-party) |
Do you need consent for _vis_opt_exp_*?
Yes. _vis_opt_exp_* is a "Analytics" cookie, so it is not strictly necessary. Under the ePrivacy Directive (2002/58/EC) and Romania's Law 506/2004, you must obtain the visitor's explicit consent before setting it.
This is general guidance, not legal advice — always verify with a lawyer.
How FewCookies handles this cookie
FewCookies recognises _vis_opt_exp_* from our database of 1,300+ known cookies and classifies it automatically as "Analytics". The free check tells you whether this cookie is detected on your site and whether your banner handles it correctly — an instant, surface-level check, no account needed.
Frequently asked questions
Do you need consent for the _vis_opt_exp_* cookie?
Yes. _vis_opt_exp_* is a "Analytics" cookie, so it is not strictly necessary. Under the ePrivacy Directive (2002/58/EC) and Romania's Law 506/2004, you must obtain the visitor's explicit consent before setting it.
What does the _vis_opt_exp_* cookie do?
VWO cookie that stores information about active A/B experiments.
Who sets the _vis_opt_exp_* cookie?
The _vis_opt_exp_* cookie is associated with VWO and is classified as analytics.