Every modern website needs cookie consent. It's not optional - it's the law. But here's the thing: most cookie consent solutions are slow, clunky, and hurt your website's performance. They're built like afterthoughts, not core infrastructure.
At Roboto Studio, we've spent years building lightning-fast websites for our clients. We obsess over Core Web Vitals, optimize every byte, and pride ourselves on delivering experiences that feel instant. So when it came time to implement cookie consent on our own site, we weren't about to compromise on performance.
That's why we chose c15t—and why it's changing how we think about privacy infrastructure.

Why consent infrastructure matters in 2025
Privacy isn't going anywhere. If anything, it's accelerating. GDPR was just the beginning. We're seeing new regulations rolling out across states, countries, and regions. We've even heard of a couple lawsuits ourselves regarding privacy.
But here's what most people miss: A good privacy infrastructure is actually a competitive advantage. When users trust your site, they engage more. When your cookie banner loads instantly, you don't lose visitors to slow performance. When your consent management is developer-friendly, you ship features faster.
The problem is that most cookie consent solutions treat privacy as a checkbox to tick, not infrastructure to build on. They're heavy, slow, and built for compliance teams, not for developers who need to ship fast, performant websites.
What does the market say
The numbers tell the story: consent management isn't just a compliance requirement—it's a massive market opportunity. The Consent Management Platform market is exploding, projected to grow from $665.71M – $3.52B in 2024 to $11.59B by 2034, with a robust CAGR of 12.63% to 21.9%.
This isn't just growth for growth's sake. It's driven by real, fundamental shifts:
Regulations are getting serious: GDPR was just the opening act. CCPA, Brazil's LGPD, India's DPDP Act, China's PIPL, Australia's Privacy Act, and Canada's CPPA - new privacy laws are rolling out across the globe. And the penalties are real. Meta paid €1.2B in fines. Amazon got hit with €746M. These aren't slaps on the wrist; they're business-changing events.
Users actually care: 73% of consumers are more concerned about privacy than they were a year ago. They're not just clicking "Accept All" anymore. They want transparency, control, and trust. The companies that deliver this will win.
Digital transformation demands it: Every business is becoming a data business. AI, machine learning, personalization - they all run on user data. But with great data comes great responsibility. You need consent infrastructure that scales with your ambitions.
Consent management sits at the intersection of the $4.4B Data Privacy Software Market and the massive $245.62B Cybersecurity Market. It's not just about cookies, it's about building the infrastructure for the privacy-first internet.
What is c15t and why it's different
c15t is a new breed of cookie consent management platform. Instead of being an afterthought bolted onto your website, it's designed from the ground up as infrastructure. Think of it as the Stripe of cookie consent - developer-first, performance-obsessed, and built for the modern web.
You can see this philosophy in action at c15t.com - their landing page loads instantly, their documentation is crystal clear, and everything feels fast and modern. It's exactly what you'd expect from a performance-first privacy platform.
Here's what makes c15t different:
Zero network cost: Unlike traditional cookie consent platforms that load external scripts and slow down your site, c15t has zero network overhead. The consent banner runs entirely on your domain with no external dependencies.
Next.js native: Built specifically for modern frameworks like Next.js, c15t integrates seamlessly with server-side rendering, static site generation, and edge functions. No more fighting with hydration errors or client-side-only solutions.
Developer experience: c15t feels like a tool built by developers, for developers. Clean APIs, TypeScript support, and documentation that doesn't make you want to tear your hair out.
Performance first: While other solutions add 50-100KB to your bundle size, c15t is lightweight and fast. It's designed to enhance your site's performance, not hurt it.
If you care about squeezing out every bit of performance from your Next.js stack, check out our deep dive into the hidden gems in Next.js - some of which pair beautifully with tools like c15t.
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Why Roboto Studio chose c15t
When we were evaluating cookie consent solutions for our own website, we had a few non-negotiables:
Performance: It had to be fast. No compromises.
Developer experience: We needed something that felt modern and well-designed.
Compliance: It had to handle GDPR, CCPA, and other regulations out of the box.
Flexibility: We wanted control over the design and user experience.
We tested the usual consent management platforms, and they all felt heavy and slow. They were built for a different era of the web, when adding another 100KB script didn't matter as much.
c15t was different. It felt like infrastructure we could build on, not a widget we had to work around. The integration was clean, the performance was excellent, and the developer experience was exactly what we wanted. Even if something was missing, it's open source, so we can contribute.

CookieBench leaderboard performance results
The proof is in the performance. c15t consistently ranks at the top of the CookieBench leaderboard - an independent benchmark that measures the real-world performance impact of cookie consent solutions. CookieBench is an open-source tool that provides transparent, unbiased performance measurements, making it the gold standard for evaluating consent management platforms.
Here's how c15t compares to other popular solutions:

These aren't synthetic benchmarks, they're real-world measurements. When you're competing for user attention in milliseconds, these differences matter.
What this means for our clients
Adopting c15t for our own website wasn't just about solving our own problems - it was about understanding a tool we could recommend to clients. Here's what we've learned:
Faster websites: The zero network cost architecture means your website loads faster, not slower, when you add cookie consent. Your users get a better experience, and your Core Web Vitals scores improve.
Better compliance: c15t handles the complex legal requirements automatically. GDPR, CCPA, and other regulations are built into the platform, so you don't have to worry about staying compliant as laws change.
Developer-friendly: Integration takes minutes, not hours. The APIs are clean, the documentation is excellent, and it works seamlessly with modern frameworks like Next.js, React, and Vue.
Design control: Unlike other solutions that force you to use their pre-built designs, c15t gives you complete control over the look and feel of your consent banner. It fits your brand, not the other way around.
We’ve applied this same mindset across our stack-from how we structure content with Sanity to how we optimize load times with Turbo Start. Here’s a look at how we do it.
The future of cookies
Cookie consent is just the beginning. The future of privacy infrastructure is about building trust through transparency, performance, and user control. Here's what we're watching:
First-party data: As third-party cookies disappear, first-party data becomes more valuable. The websites that build trust through good privacy practices will have a competitive advantage.
Privacy as performance: The best privacy tools make your website faster, not slower. c15t is leading this trend, but we expect to see more performance-focused privacy solutions.
Developer-first privacy: Privacy regulations are complex, but the tools to handle them don't have to be. We're seeing a new generation of privacy tools built for developers, not just compliance teams.
Edge computing: Privacy processing is moving to the edge, closer to users. This means faster responses and better privacy protection.
The websites that get this right will have a significant advantage. They'll load faster, convert better, and build more trust with their users.

Bonus: working with YouTube & Sanity
Shoutout to the team at Consent.io for this. We were originally using a third-party script for YouTube on the Roboto Studio website; however, this still works even if you decline cookies and goes against the website's policies.
Here's a nice little snippet to handle all the different loading states of YouTube and also to add the code to your Sanity portable text component.
Here's the portable text component
Even left in the YouTube validation for you, you're welcome.
Here's the YouTube embed
Let's build something together
Privacy infrastructure isn't just about compliance - it's about building better websites. At Roboto Studio, we help companies build fast, modern websites that users trust and love.
If you're tired of slow cookie consent solutions that hurt your website's performance, let's talk. We can help you implement c15t or other privacy-first solutions that actually make your website better.