NEWc15t v2.3 adds IAB TCF 2.4 and new integrations

c15t: The Developer-First Consent Banner

c15t is the open source web standard for managing consent and script loading.
Built for modern web apps with full developer control.

Browse framework docs →

Paste it into your coding agent. It handles Inth signup and project setup with your approval, then integrates c15t and checks the consent flow.

import {
  ConsentManagerProvider,
  ConsentBanner,
  ConsentDialog,
} from "@c15t/nextjs";
import { metaPixel } from "@c15t/scripts/meta-pixel";

export default function App() {
  return (
    <ConsentManagerProvider options={{
      mode: 'hosted',
      backendURL: process.env.NEXT_PUBLIC_C15T_URL,
      scripts: [
        metaPixel({ pixelId: '123456789012345' }),
      ],
    }}>
      {children}
      <ConsentBanner />
      <ConsentDialog />
    </ConsentManagerProvider>
  );
}

Open-source consent infrastructure

Built to live in your application.

Native components, headless primitives, and resource controls give you a complete consent system without handing the experience to a black-box script.

Performance first

Minimal runtime overhead, a small tree-shakable bundle, and no blocking third-party script between your visitor and the page.

0ms709ms

c15t

89ms

Usercentrics

445ms

OneTrust

514ms

Ketch

709ms

Style with your own CSS

Use your own components, design tokens, themes, and interaction patterns. c15t adapts to the product instead of fighting it.

Your brand color

primary: '#14b8a6'

International by default

Keep banner copy, regional variants, and right-to-left layouts in the same translation system as your application.

English

Regional policy support

Select the right consent experience for each visitor, including regions where no banner needs to be shown.

15+ privacy-law jurisdictions

GDPRCCPA / CPRALGPDPIPEDAPIPLAPPI

IAB TCF 2.3 support

Collect purpose- and vendor-level choices with a prebuilt banner and preference centre backed by the Global Vendor List.

Your privacy choices

We and our 4 partners use data to store information, measure ads, and personalise advertising.

Choose which purposes and partners you allow.

Open-source community

Built in public. Chosen by developers.

c15t is open source because consent infrastructure should be inspectable, adaptable, and owned by the teams shipping it.

Star c15t on GitHub

“Yes, please! Given the frustration we've all experienced, it blows my mind that no one has fixed this yet. Where have you been all this time? 😅”

David S Price@thedavidprice

“It was about time someone did that. Current solutions are too bloated or just suck.”

Adrien Grondin@adrgrondin

“Adding this to our default stack by the looks of it. Thanks for sharing 🖤”

Tim 木@teqqed

Build with your agent

Give it the brief. Keep control of the implementation.

Let your agent set up Inth with your approval, connect c15t, and check that your integrations respect consent choices.

Browse framework docs →

c15t: The Developer-First Consent Banner

We value your privacy

Built to live in your application.

Performance first

Style with your own CSS

We value your privacy

International by default

We value your privacy

Regional policy support

IAB TCF 2.3 support

Privacy Settings

Built in public. Chosen by developers.

Give it the brief. Keep control of the implementation.