| _gcl_au |
Google Ads |
Used by Google AdSense and Google Ads to measure how ads perform and which ad clicks lead to conversions on the website. |
90 days |
| _gcl_aw |
Google Ads |
Stores information about the Google Ads click that brought the visitor to the website, so a later conversion can be attributed to that ad. |
90 days |
| _gcl_ls |
Google Ads |
Stores ad click information in local storage as a backup, so conversion measurement stays accurate when other cookies are unavailable. |
persistent |
| FPAU |
Google |
First-party version of _gcl_au, set through our own server to measure ad performance and conversions. |
90 days |
| FPGCLAW |
Google |
First-party version of _gcl_aw. Stores the Google Ads click ID so conversions can be attributed to the right ad. |
90 days |
| FPGCLGB |
Google |
Stores the Google Ads click ID for visits from iOS devices (gbraid), so conversions from these devices can be attributed to the right ad. |
90 days |
| _fbp |
Meta |
Stores a unique ID to recognise the browser on later visits, so Meta can deliver ads, measure their results and build target audiences. |
90 days |
| _fbc |
Meta |
Stores the click ID of the Facebook or Instagram ad that brought the visitor to the website, so conversions can be attributed to that ad. |
90 days |
| _gtmeec |
Meta |
Temporarily stores encrypted (hashed) customer data, such as an email address entered on the site, so Meta can match conversions to ads more accurately. |
90 days |
| _taggingmk |
AdPage |
Stores a unique visitor ID, set through our own server, that links events within and across visits for analytics and advertising platforms. |
2 years |