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There is no universally best consent management platform (CMP): the right choice depends on where your visitors are, whether you use advertising that requires particular consent signals, and whether you need consent management for websites, apps, or connected TV. Cookiebot, OneTrust/CookiePro, Didomi, CookieYes, and CookieHub make a useful shortlist—not an independently benchmarked ranking. Compare their current features against your requirements before choosing.
What a consent management platform does
A CMP presents privacy notices, records a visitor’s choices, and communicates relevant choices to advertising and analytics vendors. For organizations participating in the IAB Europe Transparency and Consent Framework (TCF), the CMP also captures and stores choices in a TC String and communicates them to vendors where applicable. IAB Europe requires CMPs to register to participate in the TCF.
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A banner that looks polished is not enough to establish that a CMP fits. You also need to know which signals it sends, whether tags respect those signals, what properties it covers, and what evidence or preference controls your team needs.
Which requirements matter before you compare vendors?
Where your audience is and how you advertise
Map the regions where your visitors are located, the ad products you use, and whether you serve personalized ads. Google says publishers using AdSense, Ad Manager, or AdMob must use a Google-certified CMP integrated with TCF when serving personalized ads to users in the EEA, UK, or Switzerland. Check Google’s live certified-CMP list for both the vendor and the approved environment you need; a web certification does not automatically establish coverage for an app or CTV deployment.
Certification is an eligibility check against Google’s criteria, not proof that your setup complies with privacy law or the TCF. Your notices, regional rules, tag behavior, and actual processing still need to be reviewed.
Which standards and signals the CMP supports
For new TCF strings, v2.3 is the current requirement. IAB Europe launched TCF v2.3 in April 2025, making the Disclosed Vendors section mandatory in the TC String; it set February 28, 2026 as the participant adoption deadline. Google says new v2.2 strings are no longer supported after March 1, 2026, and strings created on or after that date must use v2.3. Ask each vendor to confirm its live implementation rather than relying on an older product page or proposal.
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Separately, confirm support for Google Consent Mode or any other consent APIs your advertising and analytics setup requires. Standards support and a vendor’s Google-certified status are related checks, but neither should be inferred from the other.
How consent is enforced and administered
Find out whether the CMP can discover site trackers and prevent non-essential tags from firing before a visitor makes a choice. Test the behavior on your own site: check the page before consent, after accepting, and after rejecting or changing preferences. For a larger operation, also assess domain and property limits, web versus app or CTV coverage, tag-manager and CMS support, API access, languages, consent records, exports, audit needs, and preference-center controls.
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Five CMPs to put on your shortlist
The descriptions below are conditional starting points, not a claim that one provider is best for every publisher. Google’s certified-CMP directory includes Cookiebot, CookieYes, Didomi, OneTrust/CookiePro, and CookieHub by name. Confirm the current listing and environment for your intended deployment.
| Platform | May be worth assessing when… | Confirm before choosing |
|---|---|---|
| Cookiebot | Automated cookie or tracker discovery and a site-focused setup are priorities. A 2026 comparison characterizes it around scanning and Consent Mode. | Current scan cadence and limits, domain or subpage billing, how blocking behaves in your implementation, and certification for your required environment. |
| OneTrust / CookiePro | You want to evaluate CMP work as part of a broader enterprise privacy-governance program; comparison sources associate it with a wider governance suite. | Which modules are included, procurement and implementation scope, quote-based pricing, and certification for your particular deployment environment. |
| Didomi | You need to investigate consent across web, mobile, or CTV. Google’s directory lists all three environments for Didomi. | Current product coverage, analytics and preference features, plan scope, implementation support, and current standards version. |
| CookieYes | You are looking for a small-site or self-service option. A 2026 comparison describes small-site positioning and lists a free-plan option. | Free-tier limits, which features require a paid plan, current TCF version, and certification for every environment you need. |
| CookieHub | You want another CMP specialist to evaluate; it appears in Google’s current directory and a vendor-authored 2026 comparison. | Verify product claims in current documentation, along with pricing, standards version, platform coverage, and implementation scope. |
The comparison descriptions are not substitutes for current vendor terms. Features, plan boundaries, scan allowances, and prices can change; the information here does not establish a current price for any platform.
Quick Recap
How to test a CMP before committing
- Write down your footprint. List each website, app, and CTV property; the regions you serve; your ad and analytics products; and the people who will manage consent.
- Check eligibility and standards. For any Google requirement that applies to your advertising, verify the CMP’s live listing for the exact environment. Ask the vendor to confirm TCF v2.3 support for new strings and any other signals your stack requires.
- Run a consent-behavior test. On a staging property, inspect whether non-essential tags fire before a choice and how the CMP behaves after acceptance, rejection, and preference changes. Compare the resulting signals with what your ad and analytics integrations expect.
- Test the operating workflow. Check how staff edit notices and preferences, add properties, review consent records, and export evidence. Include the teams that will handle implementation and ongoing administration.
- Request like-for-like proposals. Give each vendor the same property count, deployment types, expected scale, required features, and implementation needs. Compare billing units, quotas, overages, included support, and any separate modules—not just a headline plan price.
Use the results to eliminate options that fail a requirement first, then compare the remaining vendors on operational fit and total cost. A feature checklist and a working test are more useful than picking a CMP based on its banner design alone.
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Questions to settle with the vendor
- Which of our web, mobile-app, and CTV environments are covered by your current Google certification, if applicable?
- Do you generate TCF v2.3 strings now, and how do you handle vendor disclosures and preference changes?
- How are trackers discovered, and how can we verify that non-essential tags are blocked until the appropriate choice?
- Which integrations, domains, languages, records, exports, and support services are included in the quoted plan?
- What billing unit determines our cost, and what happens if we exceed a quota or add properties?
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