Excalibur PRO Files

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Necessary Always on

Preferences

Statistics

Marketing

What we actually set

Scanned on the store’s own page types. Every entry has a real purpose.

Necessary

Name	Purpose	Lifetime
cart_currency	Remembers which currency the cart calculates in	14 days
_shopify_essential	Keeps checkout and payment working	1 year
_shop_app_essential	Preserves the cart across Shop Pay	1 year
_shopify_test	Checks whether the browser allows cookies at all	Session
signInWithShop:cartSync…	Syncs the cart with Shop Pay	Persistent
bss-login-session-id	Controls access to the locked B2B pages	Session
themeJsAutoReload	Reloads the page once if the theme fails	Session

Preferences

Name	Purpose	Lifetime
localization	Remembers your language and time zone	1 year
Concept:filters-toggle	Remembers whether product filters are open	Persistent
Concept:recently-viewed	Remembers the products you last viewed	Persistent
lyst-customerGuid	Ties your wishlist to this browser	Persistent

Statistics

Name	Purpose	Lifetime
_shopify_y	Distinguishes returning from new visitors	1 year
_shopify_s	Measures a single visit so we can count sessions	1 day
shopify_client_id	Aggregates page views for store statistics	1 year
_shopify_sa_t / _shopify_sa_p	Records which page and source a purchase came from	30 minutes

Marketing

Name	Purpose	Lifetime
__kla_id	Links your activity to your Klaviyo newsletter	2 years
__kl_key	Identifies you to Klaviyo’s forms	Persistent
__kla_viewed	Remembers products you viewed, for the newsletter	Persistent
klaviyoOnsite	Tracks whether you already subscribed	Persistent
$referrer / $last_referrer	Remembers where you came from, for the newsletter	Persistent
_shopify_marketing	Measures which channel brought you here	1 year

YouTube (only on playback)

Videos are replaced by a still image. YouTube is contacted only once you press play — and only then are these set.

Name	Purpose	Lifetime
VISITOR_INFO1_LIVE	Estimates your bandwidth for the player	180 days
YSC	Counts which videos you have watched	Session
__Secure-YEC / __Secure-YNID	Remembers your player preferences	180 days
yt-player-… / ytidb-…	YouTube’s own player and log data	Persistent

Excalibur PRO Files

Product specifications