CMP Comparison Tool

A CMP is a tool that helps websites collect, manage, and store user consent for cookies and tracking technologies. It ensures compliance with privacy regulations like GDPR, ePrivacy, and CCPA by presenting consent banners and recording user choices.

The IAB Transparency and Consent Framework (TCF) is the industry standard for communicating consent signals to ad tech vendors. TCF 2.2 strings became invalid after February 28, 2026. CMPs that still generate TCF 2.2 strings may cause issues with programmatic advertising and compliance.

Shadow DOM is a web standard that encapsulates a consent banner's styles so they cannot be affected by — or leak into — your website's CSS. Without Shadow DOM, consent banners can break site layouts or be unintentionally restyled, leading to accessibility and compliance issues.

Switching is straightforward: sign up for a free CookieBoss account, configure your consent banner, and replace your old CMP script tag with the CookieBoss snippet. Most migrations take under 15 minutes. CookieBoss also offers a migration wizard to help automate the process.

Yes, this tool is completely free with no sign-up required. The data is based on publicly available information, official documentation, and published pricing pages. While CookieBoss is our product, we strive to present accurate and verifiable data for all CMPs listed.