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- Expo
- Zed
- Infisical
- Unkey
- Chelsea Piers
- Mintlify
- Roboto Studio
- Cal.com
- Mastra
See when the banner appears.
Compare median banner visibility and added initial transfer on the same Next.js desktop test page. c15t appeared fastest among the ten measured CMPs. Banner speed, page delay and download size are separate measurements.
Your current tool
- Inth (c15t Next.js)Banner on screen 60 ms
- OneTrustBanner on screen 629 ms
CookieBench results, Next.js desktop profile, analysis matrix-2026-10-11, methodology cookiebench-v3.2.4, read 12 October 2026. CookieBench is maintained by Inth, the team behind c15t. This run used a local c15t test backend and live vendor services for other CMPs. Lab results describe the tested configurations, not every implementation or real visitor. c15t added 16 ms to desktop main-content paint and 408 ms on emulated mobile.
Built for your framework
Typed packages for Next.js, React and plain JavaScript, so the banner ships like any other part of your site.
See the developer guideKeep the tags marketing relies on
Google Tag Manager, GA4, Meta Pixel and the rest fire the moment a visitor allows their category, and stay off until then.
See all integrationsMake it look like your brand, down to every detail.
A banner that looks nothing like your site gives visitors one more reason to harm their experience and trust. Change theme tokens and props, rearrange parts, or build your own UI on the same consent state, in any of 30+ built-in languages. Click a value in the snippet to try it.
<ConsentManagerProvider
options={{
theme: { colors: { primary: '' } },
colorScheme: '',
i18n: {
locale: 'en',
messages: {
en: {
cookieBanner: { title: 'We value your privacy' },
},
},
},
}}
>
<ConsentBanner primaryButton="" />
</ConsentManagerProvider>Headless UI, embeds and dev tools are on the developer page.
Consent is in, now prove privacy compliance.
Inth checks every website and code change for privacy risk and evidences everything.
Code Audit
Flags new trackers, vendors and data flows in every pull request, before they reach customers.
Website Audit
Loads your live site like a visitor and flags anything that runs before consent or against your policy.
Inth Agent
Answers your team’s privacy questions with citations from your own scans and the law.
Docs, CLI and MCP
Engineers run Inth from the terminal or their coding agent, with the same data as the dashboard.
A fast, familiar banner lets visitors make a choice sooner. CookieBench measures performance, not acceptance rates or conversion uplift. Inth gives Accept and Reject the same weight by default; use your own dashboard data to compare choices by region and policy after switching.
In CookieBench’s Next.js lab run, c15t’s banner appeared in a median 60 ms on desktop and 240 ms on emulated mobile. It added 16 ms to main-content paint on desktop and 408 ms on emulated mobile. Desktop initial transfer increased by 112 KB, with zero third-party requests. These results describe the tested setup, including a local c15t backend; your site may differ. [See the results and methodology](https://cookiebench.com/benchmarks/c15t).
Yes. Change the theme tokens and props, rearrange the banner’s parts, or build your own UI on the headless hooks. It ships with translations for 30+ languages and picks the visitor’s browser language.
Yes. Region-aware policy packs apply the right rules per visitor: opt-in under GDPR, UK GDPR and ePrivacy, opt-out under CCPA, Quebec Law 25, IAB TCF 2.3 and Global Privacy Control. You set the policy once and the banner follows the visitor.
Every consent choice is recorded with the policy that applied. Code Audit and Website Audit keep each finding with its source, owner, decision and fix. When someone asks what your site did and who signed it off, the record is already there.
Consumer brands, retailers and regulated companies in health and finance, where many visitors, many tags and strict regulators meet. Marketing gets more consent, engineering gets a fast banner, and legal gets proof.
Vanta helps companies become audit-ready with company-level evidence: policies, controls, employees, devices. Inth works at the product level: code, consent, scripts, vendors, and AI features. A compliance tool can tell you a policy exists. Inth tells you when your product changed and that policy may no longer be true.
No. Inth is infrastructure for implementing and operating privacy workflows. It gives legal, security, and compliance teams evidence from the product itself. What they decide with that evidence stays their call.