Cookie	Duration	Description
meshlib_cookie_consent	1 year	Stores your cookie consent choice for this site (policy version, timestamp and categories).
doxygen_* (local storage or cookie)	Session to 10 years	Documentation pages only: remember the position, width and state of the navigation sidebar. Set by the documentation generator and never sent anywhere.
prefers-dark-mode-in-light-mode, prefers-light-mode-in-dark-mode (local storage)	Persistent	Documentation pages only: remember the theme you picked with the light and dark switch.

Cookie	Duration	Description
_ga	2 years	Google Analytics: registers a unique ID used to generate statistical data on how you use the website.
_ga_*	2 years	Google Analytics 4: persists session state for the property.
_clck	1 year	Microsoft Clarity: persists the Clarity user ID and preferences, unique to this site.
_clsk	1 day	Microsoft Clarity: connects multiple page views by a user into a single session recording.
CLID	1 year	Microsoft Clarity (clarity.ms): identifies the first time Clarity saw this user on any site using Clarity.
MUID	13 months	Microsoft (bing.com, clarity.ms): identifies unique web browsers visiting Microsoft sites; used for advertising, site analytics and operational purposes.
ANONCHK	10 minutes	Microsoft Clarity (clarity.ms): indicates whether MUID is transferred to ANID; Clarity does not use ANID, so this is always 0.
MR	7 days	Microsoft (bing.com, clarity.ms): indicates whether to refresh MUID.
SM	Session	Microsoft Clarity (clarity.ms): used in synchronizing MUID across Microsoft domains.
mp_51875322b58ddf1523d499cc7d1c80a2_mixpanel	1 year	Mixpanel: stores the anonymous distinct ID and super properties used for product analytics events.
hubspotutk	6 months	HubSpot: keeps track of a visitor's identity; passed to HubSpot on form submissions and used when deduplicating contacts.
__hstc	6 months	HubSpot: main cookie for tracking visitors; contains the domain, initial and last visit timestamps and the session count.
__hssc	30 minutes	HubSpot: keeps track of sessions to determine whether the session number should be incremented.
__hssrc	Session	HubSpot: set whenever the session cookie changes, to determine whether the visitor has restarted their browser.
__cf_bm	30 minutes	Cloudflare, on behalf of HubSpot (hubspot.com, hs-scripts.com, hs-analytics.net, hs-banner.com): bot management, telling people from automated traffic.
SRM_B	13 months	Microsoft (bing.com): browser identifier paired with MUID, set during Microsoft Clarity's cross-domain sync.
__mpq_51875322b58ddf1523d499cc7d1c80a2_ev (local storage)	Persistent	Mixpanel: queue of analytics events waiting to be sent.

Cookie	Duration	Description
_fbp	90 days	Meta Pixel: first-party browser identifier used to attribute and measure Facebook and Instagram ads.
_fbc	90 days	Meta Pixel: stores the click identifier (fbclid) from a Meta ad that led to this site.
fr	90 days	Meta (facebook.com): used to deliver, measure and improve the relevance of ads.
_gcl_au	90 days	Google Ads: conversion linker; stores ad-click information for conversion attribution.
_gcl_aw	90 days	Google Ads: stores the Google Ads click identifier (gclid) for conversion attribution.
_gcl_dc	90 days	Google Ads: stores the DoubleClick click identifier (dclid) for conversion attribution.
IDE	13 months	Google DoubleClick (doubleclick.net): used for ad delivery, measurement and retargeting.
test_cookie	15 minutes	Google DoubleClick (doubleclick.net): checks whether the browser supports cookies.
NID	6 months	Google (google.com): contains a unique ID used by Google to remember preferences and for ad personalization.
bcookie	1 year	LinkedIn (linkedin.com): browser identifier cookie to uniquely identify devices accessing LinkedIn and detect abuse.
bscookie	1 year	LinkedIn (linkedin.com): remembers that a logged-in LinkedIn member is verified by two-factor authentication.
lidc	24 hours	LinkedIn (linkedin.com): facilitates data center selection.
li_gc	6 months	LinkedIn (linkedin.com): stores guests' consent regarding the use of cookies for non-essential purposes.
li_sugr	90 days	LinkedIn (linkedin.com): used to make a probabilistic match of a user's identity.
li_fat_id	30 days	LinkedIn: member indirect identifier used for conversion tracking, retargeting and analytics.
UserMatchHistory	30 days	LinkedIn (linkedin.com): used for the ID sync process; stores the last sync time to avoid repeating it.
AnalyticsSyncHistory	30 days	LinkedIn (linkedin.com): stores the time a sync took place with the lms_analytics cookie.
ln_or	1 day	LinkedIn: determines whether Oribi analytics can be carried out on this domain.
apolloAnonId (local storage)	Persistent	Apollo website tracker: anonymous visitor identifier and event queue kept in browser local storage, not in a cookie.
__cf_bm	30 minutes	Cloudflare, on behalf of LinkedIn, Apollo.io and HubSpot Ads (linkedin.com, apollo.io, hsadspixel.net): bot management, telling people from automated traffic.
68c4578a29a1ad0011d47ef7_eventQueue, 68c4578a29a1ad0011d47ef7_canTrack (local storage)	Persistent	Apollo.io: queue of visitor events waiting to be sent, and whether tracking is allowed.
lastExternalReferrer, lastExternalReferrerTime (local storage)	Persistent	Meta Pixel: the last external site that referred you here and when, used for ad attribution.