Cookie Database
The essential cookie reference
Look up any cookie by name, service, or vendor. Understand what cookies do, who sets them, and how long they last. 3,450+ cookies catalogued.
Popular cookies
Top 20 Most Common Cookies
| Name | Category | Popularity | Service |
|---|---|---|---|
| cookiehub | Necessary | 60.7% | CookieHub |
| _ga_ | Analytics | 55.5% | Google Analytics |
| _gat_ | Analytics | 15.0% | Google Analytics |
| __Secure-ROLLOUT_TOKEN | Marketing | 12.5% | Youtube |
| wpEmojiSettingsSupports | Necessary | 10.9% | - |
| lastExternalReferrerTime | Marketing | 9.9% | Meta Pixel |
| lastExternalReferrer | Marketing | 9.9% | Meta Pixel |
| _GRECAPTCHA | Functional | 8.6% | Google reCAPTCHA |
| _gcl_ls | Marketing | 8.5% | Google Ads |
| rudder_ | Uncategorised | 6.8% | - |
| li_gc | Functional | 5.6% | |
| topicsLastReferenceTime | Marketing | 5.1% | Meta Pixel |
| _hjSessionUser_ | Functional | 5.0% | Hotjar |
| _hjSession_ | Functional | 5.0% | Hotjar |
| UserSettings | Necessary | 4.5% | eviivo |
| sbjs_current | Analytics | 4.5% | WooCommerce |
| sbjs_udata | Analytics | 4.5% | WooCommerce |
| sbjs_session | Analytics | 4.5% | WooCommerce |
| sbjs_current_add | Analytics | 4.4% | WooCommerce |
| sbjs_migrations | Analytics | 4.4% | WooCommerce |
Categories
Understanding Cookie Categories
Essential
Necessary
Essential for basic site functionality. Cannot be disabled.
Functional
Functional
Remember preferences like language and theme. Improve user experience.
Analytics
Analytics
Track visitor behaviour and usage patterns. Help improve the site.
Marketing
Marketing
Track visitors across sites for targeted ads. Require explicit consent.
Frequently Asked Questions
What is a cookie?
A cookie is a small text file stored on a visitor's browser by a website. Cookies serve various purposes: some are essential for the site to function (necessary cookies), others remember user preferences (functional), track usage patterns (analytics), or enable targeted advertising (marketing).
How do I know which cookies my website uses?
Use our free cookie scanner. It automatically scans your website, identifies all cookies set by your site and third-party scripts, and categorises them into necessary, functional, analytics, and marketing.
Do all cookies require consent?
No. Under GDPR, strictly necessary cookies (those essential for the website to function, such as session cookies or security tokens) do not require consent. All other cookies - functional, analytics, and marketing - require informed, explicit consent from the user before being set.
What is a first-party vs third-party cookie?
A first-party cookie is set by the website you are visiting (matching domain). A third-party cookie is set by a different domain, typically by embedded scripts like analytics tools, advertising networks, or social media widgets. Third-party cookies are being phased out by browsers and face stricter regulatory requirements.
How long do cookies last?
Cookie duration varies: session cookies are deleted when the browser closes, while persistent cookies can last from minutes to years. For example, Google Analytics' _ga cookie lasts 2 years, while _gid lasts 24 hours. Our database shows the typical duration for each known cookie.
How is this database compiled?
Our cookie database combines data from the Open Cookie Database and multiple industry sources, cataloguing over 3,450 known cookies. Each entry includes the cookie's purpose, category, provider, vendor, and typical duration. The database is regularly updated as new cookies are discovered through website scans.
Scan your website for cookies automatically
Kukie.io scans your site, identifies all cookies, categorises them, and creates a fully compliant consent banner.
