Slingshot Bio
Roboto converged Slingshot Bio's WordPress and Shopify sites into one headless Shopify build on Next.js and Sanity, instrumented end to end and AI-ready.
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From Contentful to Builder.io
We are the Contentful to Builder.io migration experts
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The process
How we migrate from Contentful to Builder.io
- 01
Access and gating audit
First we check the existing Contentful and see whether the data is clean enough to move straight over to Builder.io, and plan around any auth walls or bot protection in the way.
- 02
Rendering assessment and extraction
Then we work out how Contentful renders its pages and pull the content out, even without CMS access.
- 03
AI-assisted sanitization
Everything extracted runs through our sanitization pipeline, which flags slop, normalizes structure, and leaves us clean content to work with.
- 04
Content-model design with the client
Before anything moves, we agree the Builder.io content model with you, shaped around how your editors actually work.
- 05
Transform and soft-migrate
We transform the content to the agreed schema and run a full dry run, so mappings and edge cases prove out before production.
- 06
Execute the real migration
Once the dry run is clean, everything moves into Builder.io in one controlled cutover.
- 07
Redirect mapping and throttled sitemap submission
Every old URL gets mapped to its new home with the right redirect, so rankings and link equity survive the move.
- 08
Agentic-browser QA
Finally, automated browsers sweep the new site for data issues, design regressions, and missing SEO signals.
- Ready when you are. We'll bring the moving boxes.Start my migration
Challenges with Contentful
Key pain points
Contentful is one of those platforms where the bill can catch you off guard. The free tier caps you at 25 content types and 100K API calls, and a single marketing site can blow past both without warning. The next step up is $300 a month, and enterprise pricing often lands in the $50K to $100K+ a year range.
The pattern teams keep hitting is the same: the jump is forced by one limit, not by needing the bigger feature set. The content type cap alone can push you onto a higher plan you don't otherwise need.
The other issue is that Contentful has strong opinions about how content should be modelled, and those opinions aren't always documented. Projects built without that knowledge tend to accumulate performance problems and awkward workarounds. Before writing Contentful off, speak to us, a lot of the pain we see is implementation, not platform.
Pricing climbs fast
Contentful isn't a cheap CMS. Once you pass the free tier's content type or API call limit, you're on the $300/month Lite plan, and enterprise pricing often starts at $50K+ a year.
Complex for non-technical users
Marketers and editors may need a small learning curve before they feel at home. It’s powerful but not always plug-and-play.
Integration dependency
A lot of magic happens through third-party tools. Great for flexibility, but it does mean extra setup instead of getting everything out-of-the-box.
Limited native features
Contentful keeps the core CMS clean and minimal, but that also means more building and configuring to get advanced functionality.
Learning curve for new teams
If your team is moving from a traditional CMS, expect some onboarding time. Structured content is amazing but new for many.
Requires careful management
Because it’s so flexible, projects need good governance. Without it, content models can get messy and harder to maintain over time.
Benefits of Builder.io
Key advantages
Builder.io occupies a unique spot in the headless CMS landscape. It is not really a traditional headless CMS in the way that Sanity or Contentful are. It is more of a visual page builder with headless capabilities bolted on. That distinction matters because if your marketing team needs to ship landing pages fast without filing Jira tickets, Builder.io genuinely delivers on that promise. The drag-and-drop editor is solid, and the ability to register your own React components so that non-developers can compose pages from your actual design system is a legitimately powerful idea.
Where Builder.io really shines is in bridging the gap between developers and marketing teams. You build the components, register them with Builder, and then hand the keys over. Marketers can assemble pages, run A/B tests, and publish without touching code. For agencies like ours, this means fewer "can you just move this banner" tickets and more time spent on actual engineering work.
The framework support is also genuinely broad. Next.js, React, Angular, Vue, Svelte, Qwik, SolidJS, and React Native all have SDKs. If you are running a modern JavaScript stack, Builder.io probably has an integration for it. The AI features they have been shipping are interesting too, though still early days in terms of real production reliability.
Visual drag-and-drop editor
The visual editor lets non-technical users build and edit pages using your actual codebase components. It is one of the better implementations of visual editing in the headless space.
Custom component registration
Developers can register their own React, Vue, or Angular components so editors drag and drop real design system pieces rather than generic blocks.
A/B testing and personalisation built in
Native experimentation tools let marketing teams run split tests and personalise content without needing a separate optimisation platform.
Broad framework support
SDKs for Next.js, React, Angular, Vue, Svelte, Qwik, SolidJS, and React Native mean you are not locked into a single frontend framework.
Marketing team autonomy
Content and marketing teams can ship landing pages, campaign pages, and promotions independently, which frees up developer time for product work.
Structured and visual content modes
Builder.io supports both structured data models for developer-driven content and visual page building for marketing-driven content, giving teams flexibility in how they work.
Common questions
Contentful to Builder.io migration FAQs
Answers to the most common questions about Contentful to Builder.io migration
Contentful has a Free tier with 10 users, 100K API calls per month, 25 content types, and 10,000 records. The Lite plan is $300/month for 20 users, 1M API calls, and 100GB CDN bandwidth. Enterprise is custom pricing with unlimited API calls and an uptime SLA of up to 99.99%. We've seen teams hit the free tier's API ceiling or content type cap fast, and the jump to Lite is often forced by a single limit rather than a feature need.
Not sold on moving? Sometimes the platform is fine and the build is the problem. We also fix Contentful sites in place.
Contentful development agencyGet in touch
Tell us what you're building. We reply within one working day. Jono or someone on the team picks up every message personally.
