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Next.js & Sanity
Development Agency
Replatformings, cms migrations, takeovers and long-term partnerships
We're a specialist agency for tech-driven companies outgrowing their current stack.
Large CMS migrations, complex Next.js projects, SEO preservation.
Powered by Nexity, our proprietary migration framework.
Official Sanity & Vercel Partner — #1 on Clutch for Sanity.
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Three engagements.
One specialist team.
We deliberately don't do everything.
Most clients work with us in one of three ways — fixed-scope, predictably priced, and senior-led from day one.
Migrate to Next.js & Sanity
Full migration of content-heavy, SEO-driven sites from WordPress, monoliths, and legacy stacks. SEO preserved, Core Web Vitals improved, content team finally unblocked — without the overruns typical of generalist agencies.
Production-Ready in 2 Weeks
Inherited a stalled or broken Next.js project? We audit, scope, fix critical issues, and deploy — guaranteed in two weeks. If we miss the deadline, we finish the critical fixes at no extra cost to you.
Continuous Development & Support
Monthly support and continuous development for production Next.js & Sanity applications. Every month, your platform gets faster, more stable, and easier to build on — not the other way round.
Our deepest specialisation
Migrations
Done right
Migration is where the risk is highest — SEO loss, content lock-in, fragile redirects, broken Core Web Vitals.
Powered by Nexity, our proprietary framework extracted from 50+ projects.
100K+ pages migrated.
Our flagship engagement (GPnotebook) migrated 100,000+ pages of clinical content with SEO preserved. The methodology travels — content-heavy WordPress, monoliths, and legacy stacks all welcome.
Live demo in 48 hours.
We rebuild a slice of your site in Nexity — on your real data, on your real domain — within 48 hours. Decks replaced with proof, before any commercial commitment.
SEO parity, out of the box.
URL parity audits, 301 redirect mapping, structured data preservation, Core Web Vitals targeting. Built into every migration as default — not bolted on as an extra.
Next.js & Headless CMS Experts
We build and migrate content-heavy websites to Next.js with headless CMS — delivering faster performance, better SEO, and a content editing experience your team will actually use.
Sanity Official Partner. Vercel Official Partner. #1 on Clutch for Sanity.
Featured Replatforming case study
The clinical platform that ~80% of UK GPs rely on.
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GPnotebook
Scaling a 100K+ Page Medical Platform with Next.js & Sanity
Over 100,000 clinical reference pages — from a legacy platform to Next.js and Sanity.
SEO rankings preserved through full URL parity and 301 redirect mapping.
Core Web Vitals improved across the site.
The editorial team fully independent of engineering for daily content updates.
COMPANIES THAT HAVE OUTGROWN THEIR STACK
Stuck on a legacy CMS
Your current platform was the right choice three years ago. Now it's slowing editorial velocity, hurting Core Web Vitals, and making every campaign harder than it needs to be.
You know you need to move. The risk of doing it wrong is what's stopping you.
Outgrowing low-code or no-code
You built fast with the tools available. Now you're hitting the ceiling — performance, customization, scalability.
You need a proper engineering foundation without starting from zero or losing what's working.
Taking over a problematic Next.js project
The codebase exists. The stack is right. But the implementation is unstable, under-documented, or built by a team that's no longer there.
You need someone who can take it over, stabilize it, and build on it reliably
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"The best thing about working with Pagepro is that you guys are always learning, you always taking time to do professional development and (...) you bring back to the table things that make sense to our project"
Adam Harvey, CEO Proofed
"Despite working remotely, it feels as if they were somewhere in the office. Unlike other dev houses, they have only one goal - to contribute to your team, something you can immediately tell.
No nasty surprises or side projects. Uniquely serious approach."
Patryk Kabaj, CPO & Co-Founder at Packhelp
"Put very simply, Pagepro is amazing to work with. They feel like an extension of my own team. They’re fast and effective and I feel like they deeply understand our product and what we’re building."
Mustafa Mohamed, Co-founder & CTO, Yoke Network
Narrow Expertise,
Wide Impact.
Three technologies. Five years of depth. One team.Next.js, Sanity, and Vercel are the only stack we ship - chosen for migration reliability, editorial autonomy, and Core Web Vitals performance out of the box. The narrow focus is why we move faster: every architectural decision is one we've already made on production projects, for content teams who depend on us.
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WE ARE THE #1 SANITY AGENCY ON CLUTCH.
As an Official Sanity Partner we are ranked #1 on Clutch in the Sanity development category. Not because we added it to our stack — but because we chose it exclusively and went deeper than anyone else.
#1 on Clutch — Sanity Development category
Official Sanity Partner since 2019
100+ production Sanity implementations delivered
Nexity: Our Proprietary Framework
Nexity is Pagepro's proprietary Next.js + Sanity migration framework, extracted from 50+ production projects. It compresses the architectural setup, SEO preservation patterns, and content modeling work that other agencies bill as discovery — delivering migrations roughly 70% faster than building from scratch, with a 48-hour live demo on your real data before any commercial commitment.
Other agencies start your project from scratch. We don't. Here's what that means for you:
WHAT YOU GET WITH NEXITY | WHAT YOU RISK WITHOUT IT |
70% faster delivery — proven architecture, ready from day one | Months of setup time billed to you before real work begins |
48h live demo built with your actual content, not a template | Generic demos that tell you nothing about your actual project |
Zero SEO ranking drops — redirects and metadata handled by default | Rankings lost to redirect errors and missing metadata post-launch |
Content editors independent from day one — no dev dependency after handoff | Editors still raising tickets for copy changes weeks after launch |
No reinventing the wheel — solved problems stay solved across every project | Same architectural decisions made (and charged for) from scratch each time |
Official Sanity & Vercel partner — early access to features your competitors don't have yet | Working with a team that's still figuring out the stack on your timeline |
Need an expert's advice?
Let's talk
about your project
Case Studies
Get the most from a team with a proven track record
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Toolbox
Front-end development for web app MVP with React for insurance company
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Colony
UX and UI Overhaul of Blockchain's App with React.js
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Proofed
MVP development for the leading professional proofreading and editing services company
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Learn Squared
Migrating an outdated e-learning platform from Drupal to Jamstack
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Localcoin
Migrating Wordpress Website to Jamstack for the financial technology company.
HOW A PROJECT STARTS
STEP 1:
Intro Call
We understand your project, your stack, your goals, and your timeline. We share relevant case studies and give you a ballpark. No sales theatre — just a direct conversation about whether we're the right fit.
STEP 2:
Deep Discovery
We go deep on your requirements and produce a Project Concept document — your current situation, your desired outcome, our proposed approach, and a precise estimate. Nothing moves forward until you've approved the concept.
STEP 3:
Proposal
A detailed written proposal. We present it live if possible. If not, we record a walkthrough video. You see exactly what you're buying before you sign anything.
STEP 4:
Delivery & Partnership
Project delivery with regular updates, clear milestones, and direct access to the team. Post-launch, most clients stay on an SLA retainer — which is why our retention rate is 92%.
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Why Choose Pagepro
Narrow expertise. Wide impact.
Next.js, Sanity, Vercel — that's the stack we ship. Our developers are senior in this ecosystem rather than generic React contractors. Nexity is the proof: a framework you can only build by doing this work over and over.
Confirmed by Sanity Official Partner & Vercel Official Partner status
Process, methodology, judgement.
AI writes code now. The hard part is everything else — architectural decisions, migration sequencing, knowing what to ship and what to cut. Our delivery method is the part of the work that compounds: documented patterns, transparent collaboration, and senior judgement on the choices that actually matter.
Confirmed by 92% client retention
Top-rated for a reason.
Clients work with us once, then come back. Word-of-mouth and partner referrals are our largest channel. The Clutch profile tells the same story across 31 detailed reviews.
4.9 Clutch Score, #1 Global for Sanity DevelopmentCTO-level conversations from day one.
Our CEO and CTO are in your discovery calls, our seniors are in your sprints. Communication is direct and honest — including when something isn't going to plan.
Confirmed by NPS of 90
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WORK WITH SPECIALISTS. DELIVER WITH CONFIDENCE
Frequently Asked Questions
How long does a typical Next.js migration take?
Most content-heavy migrations on Next.js + Sanity ship in 8–14 weeks once scope is locked, depending on page count, integrations, and editorial complexity. Nexity, our proprietary framework, removes roughly 70% of the architectural setup time that generalist agencies bill as discovery work.
Before any commercial commitment, we rebuild a slice of your site on your real domain in 48 hours — so you see the framework in action on your actual content.
Will my SEO survive a migration to Next.js + Sanity?
Yes — SEO parity is built into every Nexity migration as a default, not as an add-on. Every project includes a URL parity audit, full 301 redirect mapping, structured data preservation, and Core Web Vitals targeting.
Our flagship migration moved 100,000+ pages of GPnotebook clinical content with rankings preserved. If your current platform is hurting Core Web Vitals, the migration is typically also a measurable performance lift.
What does a Next.js + Sanity migration cost?
Engagements are fixed-scope and predictably priced — no hourly billing on the scoped work. Migrations typically range from $50 000 to $90 000 depending on page count, integrations, and design complexity.
We give you a ballpark on the first intro call and a precise quote after the Deep Discovery phase. Nothing moves forward until you've signed off on the Project Concept document.
Can you take over a Next.js project built by another team?
Yes — project takeover is one of our three core engagements. We audit the codebase, scope critical fixes, and deploy a production-ready version within two weeks. If we miss the two-week deadline, we finish the critical fixes at no extra cost. Most takeover clients move into an SLA retainer for ongoing development once the project is stabilized.
What makes Pagepro different from a generalist Next.js agency?
Three things. First, we only ship Next.js, Sanity, and Vercel — no long tail of stacks diluting expertise. Second, our delivery runs on Nexity, our proprietary framework, so we don't re-solve architectural problems on your timeline. Third, our CEO and CTO are in the discovery calls and our senior engineers are in the sprints — no offshore handoff after sign-off. Confirmed by 92% client retention and #1 global ranking on Clutch for Sanity development.
Why Sanity over Contentful, Strapi, or Storyblok?
We chose Sanity exclusively in 2019 and have delivered 100+ production implementations since. The reason is editorial autonomy: Sanity's content modeling lets non-technical teams own structured content without developer involvement — the single biggest driver of post-launch satisfaction.
We're an Official Sanity Partner and #1 on Clutch globally for Sanity development. That said, Sanity isn't right for every project. The intro call will tell you honestly if a different CMS is a better fit.
Have a project?
Let's Talk About it!
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Tell us more about your project
Please provide detailed information about your challenge, and our tech team will promptly review your submission. Expect to hear from us within 24 hours with tailored next steps and insights based on your request.
Book a Meeting With Our CEO
Upon receiving your form, we typically recommend a briefing meeting with our CEO to explore the specifics of your project. Schedule your meeting now to kickstart a tailored approach.
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Chris Lojniewski
CEO & CGO