Customer Story: Why We Ditched OneTrust for CookiesWork

Our story started when our group management mandated a single privacy vendor across all subsidiaries. The corporate decree was straightforward: "We are going with OneTrust; they are Gartner Magic Quadrant leaders, so we are taking zero corporate risk."

As Lead Tech managing an e-commerce website with 350,000 monthly visitors, I had severe reservations. We did not need an enterprise software suite costing €20,000/year to map databases across 10,000 employees. We simply needed a 100% CNIL and GDPR-compliant cookie consent banner, elegant, reliable, and able to sync with Google Consent Mode v2 without hurting our checkout funnel.

Yet the corporate decision was made from above, and our engineering team had to make it work.

That was when the real friction began. OneTrust's admin interface is a labyrinthine maze of "Tenants", "Geo-rules", cryptic banner configurations, and hundreds of pages of documentation.

Our in-house engineers could not get the banner to work reliably:

• The automated crawler miscategorized essential tags and generated ghost cookies;
• GA4 and Meta Pixel triggers lost synchronization upon page navigation;
• Modifying a single consent phrase required publishing to a staging environment, waiting for CDN propagation, and testing across multiple devices.

Faced with looming compliance deadlines, we were forced to hire a certified OneTrust consulting agency. The final bill: 8 man-days billed at €1,200/day, adding nearly €10,000 in implementation costs just to display a consent banner that should have worked in minutes.

Once OneTrust went live in production, our web performance metrics plummeted:

• Massive JavaScript footprint: The OneTrust bundle (otSDKStub.js and associated modules) loaded over 850 KB of JavaScript, choking mobile bandwidth.
• Main thread lockup: Total Blocking Time (TBT) surged by +450 ms upon initial landing.
• Google PageSpeed collapse: Our mobile performance score dropped instantly from 88/100 to 49/100.

In e-commerce, every fraction of a second costs conversions. We found ourselves paying tens of thousands of euros for a solution that directly slowed down our store and hurt organic Google rankings.

When our contract came up for renewal, we presented the hard data to executive management: astronomical subscription fees, recurring consultant invoices, and confirmed SEO degradation. We were finally authorized to explore an agile alternative.

We tested CookiesWork, and the contrast was immediate:

1. 1Setup in 15 minutes: We registered our site, customized colors to match our brand palette, and pasted the clean embed.js script tag.
2. 2Native Google Consent Mode v2: No complex GTM container recipes required. We inputted our G-XXXXXXXXXX tracking ID into the dashboard, and consent signals were handled natively and reliably by default.
3. 3Zero external consultants: The clean, focused UX allowed our internal team to handle everything autonomously without spending a dime on agency fees.

Half a year after our migration, the metrics speak for themselves:

• Restored speed: CookiesWork weighs under 25 KB. Our mobile Google PageSpeed score rebounded to 91/100.
• Higher consent rates: Thanks to a balanced, clean design strictly meeting regulatory guidelines (equal prominence for accept and reject buttons), our opt-in rate increased from 64% with OneTrust to 79% with CookiesWork.
• Audit-ready consent log: Every interaction generates a tamper-proof cryptographic token with anonymized IP. Full CSV exports are available on demand.
• 90% budget reduction: No more 5-figure enterprise contracts or consultant retainers.

Our advice: If you are not a multi-billion-dollar enterprise needing internal database discovery and vendor risk questionnaires, OneTrust is costly overkill. For web compliance that is fast, reliable, and user-friendly, CookiesWork is an absolute game-changer.