Privacy and compliance
Cookie consent checker
Detect whether a page renders a known cookie consent banner.
Free tool vs Janitor
This free tool detects a banner from the homepage HTML only. Janitor checks for the banner across the site and pairs it with a real cold-visit crawl that confirms trackers are actually gated before consent.
See the full site-wide check in Janitor
What this checks
Under UK and EU rules, sites that set non-essential cookies generally need to show a consent banner. This tool reads a page HTML and detects whether a recognised consent banner library is present.
It checks for the same set of consent platforms Janitor monitors: CookieYes, Cookiebot, OneTrust, Klaro, Iubenda, Usercentrics, Osano and more.
Why it matters
A missing or broken consent banner is a common UK GDPR problem, and it is the kind of thing a client gets a complaint about rather than a warning.
Banners are added and removed as sites change, so one that was in place can quietly disappear after a redesign or migration.
How to fix common failures
Use a recognised consent platform
A known consent management platform handles the banner, the choices and the record-keeping for you.
Show the banner before tags load
A banner is only useful if non-essential tags wait for consent. Pair it with the pre-consent tracking check.
Re-check after redesigns
Migrations and theme changes are where a banner most often goes missing, so confirm it survived.
Cookie consent checker is one check. Janitor watches cookie consent banners automatically across every client site and puts it in a branded report.
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Related
FAQ
Cookie consent checker FAQ
Which consent banners does it detect?
The same libraries Janitor monitors: CookieYes, Cookiebot, OneTrust, Klaro, Cookie Script, Iubenda, Usercentrics, tarteaucitron, Osano and more. A custom or server-rendered banner may not be detected.
Does a banner alone make a site compliant?
No. The banner has to actually gate non-essential tags before consent. Use the pre-consent tracking checker to see whether trackers load on a cold visit.
Can Janitor monitor this over time?
Yes. Janitor checks for the consent banner on every client site, so a banner that disappears after a change is flagged.
Get started
Check it once, or watch it for every client
Janitor runs around two dozen checks on every site you manage and turns them into a branded report.
30-day free trial. No credit card required.