Cookie Support Checker
Cookie Support Checker test browser cookie support can this site set cookies navigator cookie enabled checkThis check creates one temporary first-party session cookie, reads it, and immediately removes it.
- Browser setting signal
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- Temporary cookie test
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- Page protocol
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- Scope tested
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Run and read a worked example
Select Check cookie support. If the setting signal says Enabled and the temporary-cookie test says Supported for this site, this top-level page could write and read its short-lived first-party value. That result still does not describe embedded analytics or advertising. If the practical test fails, site-specific policy or the current context may be more restrictive than the general signal.
What the practical test does
The page writes a uniquely named first-party session cookie with a short lifetime and SameSite=Lax, checks whether that exact name and value can be read through document.cookie, then sends an expired version to remove it. It does not inspect, display, change, or delete unrelated cookies.
Why two results appear
navigator.cookieEnabled is a browser-provided setting signal. The temporary-cookie result tests whether this page can use a basic first-party cookie now. Browser privacy controls, extensions, embedded contexts, storage partitioning, enterprise policy, protocol, and user choices can produce more nuanced behavior than a single yes-or-no property describes.
First-party is not third-party
This page tests only a cookie written by the current Awesome Tools origin. It does not test an advertising, analytics, embedded, or other cross-site context. A successful result here does not show that third-party cookies work elsewhere. A blocked third-party cookie can coexist with working first-party cookies.
Cookie support is not consent
Technical ability to store a cookie says nothing about whether a site has permission or a lawful basis to use a particular cookie. It does not classify cookies as necessary, functional, analytics, or advertising. Site owners must follow their own requirements and applicable policy; visitors should use the site's controls and browser settings for their choices.
Troubleshooting a failed result
Check browser privacy settings, site-specific permissions, private browsing restrictions, content blockers, and managed-device policy. Test in a normal top-level tab rather than an embedded frame. If a specific application still fails after this basic test passes, its problem may involve cookie attributes, domain or path scope, expiration, secure transport, server behavior, or cross-site rules.
Limitations and privacy
No result is sent to a server by this tool. It does not inventory existing cookies, test server-set HttpOnly cookies, diagnose every browser policy, change settings, or guarantee future behavior. Browser configuration can change after the check.
Cookie Support FAQ
Does the test leave a cookie behind?
It immediately expires the temporary cookie after reading it. Browser tools may briefly show the write during the test.
Does success mean ad cookies work?
No. Cross-site and third-party cookie rules are outside this test.
Does the page read my other cookies?
No. It searches only for the unique temporary name it created.