name	generate-migration-html
description	Generate Edge Delivery Services-compliant HTML from authoring analysis. Creates section structure, applies block tables, handles metadata, and manages images folder.

Generate Migration HTML

Create plain HTML file with EDS block structure from authoring analysis.

When to Use This Skill

Use this skill when:

You have complete authoring analysis (all sequences have decisions)
You have section styling validation (from authoring-analysis)
Ready to generate the HTML file for preview

Invoked by: page-migration skill (Step 4)

Prerequisites

From previous skills, you need:

✅ Authoring analysis with block selections (from authoring-analysis)
✅ Section styling decisions (from authoring-analysis Step 3e)
✅ metadata.json with paths and metadata (from scrape-webpage)
✅ cleaned.html with content (from scrape-webpage)
✅ Block structures fetched (from authoring-analysis Step 3d)

Related Skills

page-migration - Orchestrator that invokes this skill
authoring-analysis - Provides authoring decisions and styling validation
scrape-webpage - Provides metadata, paths, cleaned HTML, images
preview-migration - Uses this skill's HTML output

⚠️ CRITICAL REQUIREMENT: Complete Content Migration

YOU MUST MIGRATE ALL CONTENT FROM THE PAGE. PARTIAL MIGRATION IS UNACCEPTABLE.

❌ NEVER truncate or skip sections due to length concerns
❌ NEVER summarize or abbreviate content
❌ NEVER use placeholders like ""
❌ NEVER omit content because the page is "too long"
✅ ALWAYS migrate every section from authoring analysis
✅ ALWAYS include all text, images, and structure from cleaned.html
✅ If you encounter length issues, generate the FULL HTML anyway

Validation requirement: You MUST verify that the number of sections in your HTML matches the number of sections from identify-page-structure. If they don't match, you have made an error.

HTML Generation Workflow

Structure Requirements

IMPORTANT CHANGE: The AEM CLI now automatically wraps HTML content with headful structure (head, header, footer). You MUST generate ONLY the section content.

What to generate:

✅ Section divs with content: <div>...</div> (one per section)
✅ Blocks as <div class="block-name"> with nested divs
✅ Default content (headings, paragraphs, links, images)
✅ Section metadata blocks where validated in authoring-analysis

What NOT to generate:

❌ NO <html>, <head>, or <body> tags
❌ NO <header> or <footer> elements
❌ NO <main> wrapper element
❌ NO head content (meta tags, title, etc. - this comes from project's head.html)

Structure format:

<div>
  <!-- Section 1 content -->
</div>
<div>
  <!-- Section 2 content with section-metadata if needed -->
  <div class="section-metadata">
    <div>
      <div>Style</div>
      <div>grey</div>
    </div>
  </div>
  <!-- Section 2 blocks/content -->
</div>
<div>
  <!-- Section 3 content -->
</div>

For detailed block structure patterns: See ../page-migration/resources/html-structure.md

Section Metadata Application

Apply validated decisions from authoring-analysis Step 3e:

WITH section-metadata (section provides container styling):

<div>
  <div class="section-metadata">
    <div>
      <div>Style</div>
      <div>dark</div>
    </div>
  </div>
  <div class="tabs">
    <!-- Tabs block content -->
  </div>
</div>

WITHOUT section-metadata (background is block-specific):

<div>
  <div class="hero">
    <!-- Hero block content with its own dark background -->
  </div>
</div>

Important:

Only migrate visible body content sections (skip header, navigation, footer - auto-generated)
Use consistent style names from identify-page-structure
Apply validated decisions from authoring-analysis Step 3e - Skip section-metadata for single-block sections where background is block-specific
Place section-metadata div at the start of each section that needs styling
The metadata div will be processed and removed by the platform
Each section is a separate top-level <div> element

Page Metadata Block

Unless user explicitly requested to skip metadata, use the metadata extracted from scrape-webpage to generate a metadata block.

Process:

1. Review extracted metadata from metadata.json

2. Map each property to EDS format:

Title:

Compare source title (or og:title) with first H1 on page
If matches first H1 → Omit (EDS defaults to H1)
If differs → Include as title property

Description:

Compare source description (or og:description) with first paragraph
If matches first paragraph → Consider omitting (EDS defaults to first paragraph)
If differs OR more descriptive → Include as description property
Check: 150-160 characters ideal

Image:

Check source og:image
If matches first content image → Consider omitting (EDS defaults to first image)
If custom social image → Include as image property
Ensure absolute URL or correct relative path
Check: 1200x630 pixels recommended

Canonical:

If points to same page URL → Omit (EDS auto-generates)
If points to different page → Include as canonical property

Tags:

Map article:tag or keywords → comma-separated tags property

Properties to SKIP (EDS auto-populates):

og:url, og:title, og:description, twitter:title, twitter:description, twitter:image
viewport, charset, X-UA-Compatible (belong in head.html)

3. Generate metadata block HTML:

<div>
  <div class="metadata">
    <div>
      <div>title</div>
      <div>[Your mapped title]</div>
    </div>
    <div>
      <div>description</div>
      <div>[Your mapped description]</div>
    </div>
    <!-- Only include image if custom -->
    <!-- Only include canonical if differs from page URL -->
    <!-- Only include tags if present -->
  </div>
</div>

Append metadata block as the last section div at the end of the HTML file.

Detailed guidance: See resources/metadata-extraction.md and resources/metadata-mapping.md

Images Folder Management (CRITICAL)

The images are currently in ./migration-work/images/ and the HTML references them as ./images/.... You MUST handle the images folder correctly:

Step 1: Determine the correct images folder location

Based on paths.htmlFilePath from metadata.json:

HTML file: us/en/about.plain.html → Images should be at: us/en/images/
HTML file: products/widget.plain.html → Images should be at: products/images/
HTML file: index.plain.html → Images should be at: images/

Rule: Images folder goes in the same directory as the HTML file.

Step 2: Copy the images folder

# Example: If HTML is at us/en/about.plain.html
mkdir -p us/en/images
cp -r ./migration-work/images/* us/en/images/

Step 3: Verify image paths in HTML are correct

The HTML should already reference images as ./images/... which is correct for files in the same directory. No path changes needed in the HTML.

Example:

HTML location: us/en/about.plain.html
Images location: us/en/images/
Image reference in HTML: <img src="./images/abc123.jpg">
Result: ✅ Correct - browser resolves to us/en/images/abc123.jpg

Save HTML File

Save to: Use paths.htmlFilePath from metadata.json (e.g., us/en/about.plain.html)

Read the metadata.json file from scrape-webpage to get the correct file path.

Validation Checklist (MANDATORY)

Before proceeding to preview-migration skill, verify:

✅ Section count: HTML has the same number of top-level <div> sections as identified in identify-page-structure
✅ All sequences: Every content sequence from authoring-analysis appears in the HTML
✅ No truncation: No "..." or "" or similar placeholders
✅ Complete text: All headings, paragraphs, and text from cleaned.html are present
✅ All images: Every image reference from the scraped page is included
✅ HTML file saved: HTML file written to disk at the correct path
✅ Images folder copied: Images folder exists in the same directory as the HTML file
✅ Images accessible: Verify that at least one image file exists in the copied images folder

If any validation check fails, STOP and fix before proceeding.

Output

This skill provides:

✅ HTML file at correct path (e.g., us/en/about.plain.html)
✅ Images folder in same directory (e.g., us/en/images/)
✅ Complete content migration (all sections)
✅ Proper EDS block structure
✅ Section metadata applied per validation
✅ Page metadata block included

Next step: Pass HTML file path to preview-migration skill

generate-migration-html

Install Skill

SKILL.md