| _vis_opt_exp_{CAMPAIGNID}_goal_{GOALID} |
This cookie is created when a campaign objective is triggered. This cookie, once created, will always have a value of 1. |
visualwebsiteoptimizer.com |
100 days |
| _vis_opt_test_cookie |
This cookie is created to detect whether or not cookies are enabled on the visitor's browser. It also helps in tracking the number of browsing sessions completed by a visitor. The value of this cookie is always 1. |
visualwebsiteoptimizer.com |
when closing the browser |
| _vis_opt_exp_{CAMPAIGNID}_combi |
This cookie is created when a visitor is chosen for a particular variation of a test. This cookie ensures that visitors see the same variation when they revisit the page in the future. Here, the control has a value of 1, variation #1 has a value of 2, variation #2 has a value of 3, and so on. |
visualwebsiteoptimizer.com |
100 days |
| _vis_opt_exp_{CAMPAIGNID}_exclude |
This cookie is created when a visitor has been excluded from a test campaign due to traffic percentage specifications. The value is always 1. |
visualwebsiteoptimizer.com |
100 days |
| _vis_opt_exp_{CAMPAIGNID}_split |
This cookie is created when one of the variations is chosen for the visitor, but the visitor is not yet redirected to the variation page. It exists so that VWO can verify that the variant page matches the chosen variant after landing on the page. The value is >=2 (because 1 corresponds to Control and it is not created in case Control is chosen)
NOTE: This cookie is created only for split URL campaigns. |
visualwebsiteoptimizer.com |
100 days |
| _vis_opt_s |
This cookie tracks the session created for a visitor, i.e. the number of times the browser was closed and reopened. The value is >=1, followed by a vertical bar sign. For example, the value 2 indicates that the visitor restarted the browser once while 3 means twice. |
visualwebsiteoptimizer.com |
100 days |
| _vis_opt_out |
This cookie tracks the session created for a visitor, i.e. the number of times the browser was closed and reopened. The value is >=1, followed by a vertical bar sign. For example, the value 2 indicates that the visitor restarted the browser once while 3 means twice. |
visualwebsiteoptimizer.com |
10 years |
| _vwo_uuid |
This cookie generates a unique ID for each visitor and is used for the reporting segmentation functionality in VWO, and it also allows you to view the data in a more refined way. |
visualwebsiteoptimizer.com |
10 years |
| _vwo_uuid_{CAMPAIGNID} |
This cookie is created for each cross-domain campaign. It generates a unique ID for each visitor and is used for reporting segmentation functionality in VWO. It also allows you to visualize the data in a more refined way. |
visualwebsiteoptimizer.com |
10 years |
| _vwo_ds |
This cookie stores persistent visitor-level data for VWO Insights. |
visualwebsiteoptimizer.com |
Depends on account retention period |
| _vwo_sn |
This cookie stores information at the session level. |
visualwebsiteoptimizer.com |
30 minutes |
| _vwo_uuid_v2 |
This cookie calculates unique traffic to a website. |
visualwebsiteoptimizer.com |
366 days |
| _vis_opt_exp_{CAMPAIGNID} |
This cookie stores the chosen combination. This is a temporary cookie that is deleted when campaign changes are applied. |
visualwebsiteoptimizer.com |
Persists until campaign changes are applied |
| _combi_choose |
This cookie stores the chosen combination. This is a temporary cookie that is deleted when campaign changes are applied. |
visualwebsiteoptimizer.com |
Persists until campaign changes are applied |
| _vwo_referrer |
This cookie stores referral information allowing VWO to identify the original traffic source in the event of a split URL campaign. NOTE: This cookie is created only for split URL campaigns but can be read by all campaign types. |
visualwebsiteoptimizer.com |
15 seconds |
| _vwo |
This cookie is a jar of all cookies. It is currently created only for the Safari browser. In the future, it would replace all cookies. The actual expiration of a cookie does not matter because it stores the expiration of cookies set there and continues to expire them. |
visualwebsiteoptimizer.com |
2096 years |
| _vwo_global_opt_out |
This cookie is retained when a visitor unsubscribes from vwo across all websites in a given browser. |
visualwebsiteoptimizer.com |
100 days |
| _vwo_ssm |
This cookie is used for testing purposes and is only created on sites using the HTTP protocol. This is used to check whether VWO can set cookies on them, after which this cookie is deleted. |
visualwebsiteoptimizer.com |
3650 jours |
| _vis_opt_exp_{CAMPAIGNID} |
This cookie is created when a campaign objective is triggered. Once created, this cookie always has the value 1. |
visualwebsiteoptimizer.com |
100 days |
| _goal_{GOALID}_{ACCID} |
This cookie is created when a campaign objective is triggered. Once created, this cookie always has the value 1. |
visualwebsiteoptimizer.com |
100 days |
| _vis_opt_exp_{CAMPAIGNID}_combi_{ACCID} |
This cookie is created when a visitor is chosen for a particular variation of a test. This ensures that visitors see the same variation when they revisit the page. Here, the control always has the value 1, variation #1 always has the value 2, variation #2 has the value 3, and so on. |
visualwebsiteoptimizer.com |
100 days |
| _vis_opt_exp_{CAMPAIGNID} |
This cookie is created when a visitor has been excluded from a campaign due to traffic percentage specifications. The value of this cookie is always 1. |
visualwebsiteoptimizer.com |
100 days |
| _exclude_{ACCID} |
This cookie is created when a visitor has been excluded from a campaign due to traffic percentage specifications. The value of this cookie is always 1. |
visualwebsiteoptimizer.com |
100 days |
| _vis_opt_exp_{CAMPAIGNID}_split_{ACCID} |
This cookie is created when one of the variations is chosen for the visitor, but the visitor is not yet redirected to the variation page. With this, VWO verifies that the variant page matches the chosen variant after landing on the page. The value will always be >=2 because it will not be created if the control is chosen. |
visualwebsiteoptimizer.com |
100 days |
| _vwo_uuid_{CAMPAIGNID}_{ACCID} |
This cookie is created for each cross-domain campaign. It generates a unique ID for each visitor and is used for reporting segmentation functionality in VWO. It also allows you to visualize the data in a refined way. |
visualwebsiteoptimizer.com |
10 years |
| _vis_opt_exp_{CAMPAIGNID}_combi_choose_{ACCID} |
This cookie stores the chosen combination. This is a temporary cookie that is deleted when campaign changes are applied. |
visualwebsiteoptimizer.com |
Persists until campaign changes are applied |
| _vwo_global_opt_out |
This cookie is retained when a visitor unsubscribes from vwo across all websites in a given browser. |
visualwebsiteoptimizer.com |
100 days |
| debug_vis_opt_exp_{CAMPAIGNID}_goal_{GOALID} |
This cookie is created when a test campaign objective is triggered. This cookie, once created, will always have the value 1. |
visualwebsiteoptimizer.com |
100 days |
| debug_vis_opt_test_cookie |
This cookie is created to detect whether or not cookies are enabled on the visitor's browser. It also helps in tracking the number of browsing sessions completed by a visitor. The value of this cookie is always 1. |
visualwebsiteoptimizer.com |
Expires when session expires |
| debug_vis_preview_{ACCOUNTID} |
This cookie is generated when you switch variations in preview mode |
visualwebsiteoptimizer.com |
Expires on session expiration |
| debug_vis_opt_exp_{CAMPAIGNID}_combi |
This cookie is created when a visitor is chosen for a particular variation for a test. This cookie ensures that visitors see the same variation when they revisit the page in the future. Here the Control always has the value of 1, Variation #1 always has the value of 2, and Variation #2 has a value of 3, and so on. |
visualwebsiteoptimizer.com |
100 days |
| debug_vwo_referrer |
This cookie stores referral info allowing VWO to identify the original Traffic source in case of the Split URL campaign. |
visualwebsiteoptimizer.com |
15 seconds |
| debug_vis_opt_variation_page |
This cookie persists the selection by the person using previews. |
visualwebsiteoptimizer.com |
Expires on session expiration. |
| debug_vis_opt_exp_{CAMPAIGNID}_exclude |
This cookie is created when a visitor has been excluded from a Test Campaign due to the traffic percentage specifications. The value is always 1. |
visualwebsiteoptimizer.com |
100 days |
| debug_vis_opt_exp_{CAMPAIGNID}_split |
This cookie is created when one of the variations is chosen for the visitor, but the visitor is not yet redirected to the variation page. It exists so that VWO can verify that the variation page corresponds to the chosen variation after landing on the page. The value is >=2. As 1 corresponds to control and it’s not created if control is chosen. |
visualwebsiteoptimizer.com |
100 days |
| debug_vwo_uuid |
This cookie generates a unique id for every visitor and is used for the report segmentation feature in VWO, and it also allows you to view data in a more refined manner. |
visualwebsiteoptimizer.com |
10 years |
| debug_vwo_ds |
This cookie stores persistent visitor-level data for VWO Insights. |
visualwebsiteoptimizer.com |
Depends on the retention period of the account |
| debug_vwo_sn |
This cookie stores session-level information |
visualwebsiteoptimizer.com |
30 minutes |
| _vis_opt_exp_{CAMPAIGNID}_combi_choose_{ACCID} |
This cookie stores the chosen combination. It’s a temporary cookie that gets deleted when the campaign changes are applied |
visualwebsiteoptimizer.com |
Persists until campaign changes are applied |
Google Chrome : 
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Internet Explorer : 
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Opera :