c15t is the open-source web standard for managing consent and script loading inside modern web applications. With native SDKs for React, Next.js, Vue, Svelte, and other frameworks, it delivers sub-100ms overhead by bundling consent logic directly into the application rather than injecting blocking scripts that degrade Core Web Vitals.
Designed for teams who demand transparency and control, c15t provides headless consent UI components, i18n support, geo-location detection, and compliance coverage across GDPR, CCPA, IAB TCF 2.3, and 15+ privacy-law jurisdictions. It is trusted by developer tools companies, luxury brands, and online supermarkets, and has reached over 1.7k GitHub stars and 1.6 million npm downloads.

Headless open-source cookie consent engine for modern web apps.


Osano Cookie Consent gives website operators cookie scanning and a consent dashboard built for privacy compliance.


iubenda pairs a cookie consent banner with generated privacy policies for website operators.


Didomi Consent Management Platform collects and enforces consent across web and mobile properties.


Privacy by Confiant verifies consent and privacy compliance in ad delivery beyond the initial consent signal.


OneTrust Consent & Preferences captures and enforces consumer consent across web, mobile, and applications.

10015 Tools is a free all-in-one toolbox of text, image, coding, and color utilities.


The Event Data Compliance Toolkit is RudderStack's product for managing consent, cookies, sensitive data, and user deletion.


Cronitor's cookie-free analytics track website traffic, errors, and performance from real visitors.


Ketch is a permissioning platform that enforces consent and automates data subject requests.
Osano Cookie Consent gives website operators cookie scanning and a consent dashboard built for privacy compliance.

iubenda pairs a cookie consent banner with generated privacy policies for website operators.

Didomi Consent Management Platform collects and enforces consent across web and mobile properties.

Privacy by Confiant verifies consent and privacy compliance in ad delivery beyond the initial consent signal.

OneTrust Consent & Preferences captures and enforces consumer consent across web, mobile, and applications.


10015 Tools is a free all-in-one toolbox of text, image, coding, and color utilities.
The Event Data Compliance Toolkit is RudderStack's product for managing consent, cookies, sensitive data, and user deletion.

Cronitor's cookie-free analytics track website traffic, errors, and performance from real visitors.

Ketch is a permissioning platform that enforces consent and automates data subject requests.
