Stores the date of the user's first visit to the website. Used by Yandex Metrica to distinguish between new and returning visitors.
_ym_uid
Used to distinguish website visitors by assigning a unique anonymous identifier. Helps Yandex Metrica track unique users for statistical reports.
12 months
_ym_isad
Used to determine whether the visitor has ad blockers installed. This helps Yandex Metrica understand how ad-blocking software affects data collection.
20 hours
_ym_d
Stores the date of the user's first visit to the website. Used by Yandex Metrica to distinguish between new and returning visitors.
12 months
