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Contentful to Sanity Migration · Chelmsford

Contentful to Sanity Migration in Chelmsford

Moving Chelmsford organisations from Contentful to Sanity, where the body content is what needs work. The two platforms represent rich text as different structures — with embedded entries, links and marks arranged their own way — so article bodies have to be transformed rather than transferred, and that transformation is the migration.

Why this comes up

The problem

Rich text exported from Contentful arrives as a structure Sanity cannot interpret.

What you get

What we deliver

  • Rich text converted between the two document structures, not copied across
  • Embedded entries and assets within body content preserved through the conversion
  • References between documents remapped, since identifiers change
  • Content model translated to Sanity's schema definitions in code
  • Assets migrated with their metadata rather than only their files
  • Conversion verified on real content, because the difficult cases are in the archive

Want this scoped for your business in Chelmsford?

Thirty minutes, no charge, no sales script. You leave with a written summary of what contentful to sanity migration would actually involve — whether or not you use us.

Book a 30-minute call

Working in Chelmsford

East of England

Chelmsford is a commuter city with a large share of residents working in London, so local businesses compete for staff against City salaries and lean harder on flexible and remote working than most towns its size.

Professional services systems and hybrid-working setups for firms whose staff split time between here and London.

Sectors we work with in Chelmsford

  • Financial Services
  • Professional Services
  • Retail
  • Construction
  • Public Sector

What we work with

Technologies and platforms

  • Sanity
  • Contentful
  • Portable Text
  • TypeScript

Who we work with

Industries we serve

  • Media companies
  • SaaS businesses
  • Retail
  • Professional services
  • Technology companies

Why us

Why Chelmsford businesses choose Asionis

  • Projects typically launched within 4–8 weeks
  • No long-term contracts required
  • All team members UK-based
  • Dedicated account manager and development team
  • Transparent reporting with monthly performance metrics
  • Scalable from startup to enterprise

How we work

  1. Step 1

    Free consultation

    A 30-minute call to understand the problem. You keep the written summary either way.

  2. Step 2

    Proposal

    Scope, timeline and a fixed price, in writing, before anything starts.

  3. Step 3

    Build

    Short cycles with regular check-ins, so you see progress rather than hear about it.

  4. Step 4

    Launch and support

    We handle the go-live and stay available afterwards.

Contentful to Sanity Migration in Chelmsford — common questions

Why can rich text not simply be moved?
Because the platforms model it differently. Both represent formatted content as structured data rather than markup, but the shapes disagree — so a converter has to be written and, more importantly, checked against the varied content that has accumulated over years.
What happens to embedded entries?
They need handling explicitly. Content with an embedded product card, callout or related article inside the body is the part conversions break on, and a migration tested only against plain paragraphs will appear to work until an editor opens something real.
Do references survive?
Only if remapped. Documents referencing each other by identifier need those identifiers translating as part of the migration, and a run that imports documents before their targets exist produces references pointing at nothing.
How should the conversion be verified?
Against the oldest and strangest content you have. Recent articles follow current conventions and convert cleanly, whereas the archive contains formatting decisions nobody remembers making — and those are exactly the pages that will be noticed if they arrive broken.
Do you work with businesses across Essex?
Yes. We are based in Leicester, United Kingdom and work with clients throughout East of England, including Chelmsford and the surrounding Essex area. Most collaboration happens remotely, and we travel for kick-offs and key milestones.
What kind of Chelmsford businesses do you usually work with?
Professional services systems and hybrid-working setups for firms whose staff split time between here and London. Beyond that we work across Financial Services, Professional Services, Retail, Construction and Public Sector.
Do you cover the areas around Chelmsford?
Yes — we work throughout East of England, including Colchester, Southend, London. Chelmsford is an urban area of roughly 180,000+, and we take on work across the wider Essex region rather than the city boundary alone.

Talk to us about Contentful to Sanity Migration in Chelmsford

A 30-minute call with someone who would actually work on it. No sales script, no obligation.

  • Projects typically launched within 4–8 weeks
  • No long-term contracts required
  • All team members UK-based
  • Dedicated account manager and development team
  • Transparent reporting with monthly performance metrics
  • Scalable from startup to enterprise

Or reach us directly

07707 771599admin@asionis.com

Leicester, United Kingdom