name: Docs Migration to Fern
description: >-
  Customer-facing migration workflow Fern uses to move developer docs off
  Mintlify, Stainless, ReadMe, GitBook, or Docusaurus onto Fern. Combines the
  docs-site-sync chrome extension, migration-checker, and agent-score tooling.
provider: Fern
providerId: fern
created: '2026-05-22'
tags:
  - Documentation
  - Developer Experience
  - Migration
workflow:
  - step: inventory-source-site
    description: Crawl the existing docs site and inventory pages, navigation, and assets.
    inputs:
      - sourceSiteUrl
    outputs:
      - pageInventory
  - step: configure-fern-target
    description: Stand up a fern docs configuration mirroring the source navigation and brand.
    inputs:
      - pageInventory
    outputs:
      - docsConfig
  - step: side-by-side-compare
    description: Use the docs-site-sync extension to compare old and new docs side by side and detect broken links.
    inputs:
      - sourceSiteUrl
      - fernPreviewUrl
    outputs:
      - migrationDiffReport
  - step: run-migration-checker
    description: Run migration-checker for automated link, page, and content-parity analysis.
    inputs:
      - sourceSiteUrl
      - fernPreviewUrl
    outputs:
      - migrationCheckReport
  - step: score-agent-readiness
    capability: fern.docs.agentScore
    description: Score the new Fern docs site on agent readiness before cutover.
    inputs:
      - fernPreviewUrl
    outputs:
      - agentReadinessReport
  - step: cut-over
    description: Repoint the canonical docs domain at the Fern-hosted site.
    inputs:
      - docsConfig
    outputs:
      - hostedDocsSite