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7/16/2026
The original title is "Building a custom Contentful Rich Text editor: the round-trip problem"

The original title is "Building a custom Contentful Rich Text editor: the round-trip problem"

Original: Building a custom Contentful Rich Text editor: the round-trip problem

Short summary

A deep technical post on building a custom Contentful Rich Text editor using PlateJS (Slate), focusing on the round-trip problem: ensuring serialize(deserialize(doc)) equals doc so content isn't silently corrupted. The approach mirrors Plate node types to Contentful's schema with inverse lookup tables, and handles edge cases like empty nodes and void embeds.

  • •The hard part of custom Contentful editors is the conversion layer, not the UI
  • •Mirror Plate node types to Contentful schema with inverse lookup tables for guaranteed round-trip fidelity
  • •Handle edge cases: empty nodes need backfill, void embeds need dummy text children

Generated with AI, which can make mistakes.

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