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HTML to YAML Converter

Transform HTML into YAML data format

HTML Input

spaces

YAML Output

About HTML to YAML Converter

Convert HTML documents to YAML (YAML Ain't Markup Language) data serialization format. YAML is a human-friendly data format commonly used for configuration files, data exchange, and structured data storage.

Key Features

  • Nested Structure: Preserves HTML hierarchy in YAML format
  • Attribute Support: Converts HTML attributes to YAML key-value pairs
  • Flat Mode: Option to flatten structure for simpler output
  • Comments: Includes generation timestamp and metadata
  • Link Extraction: Extracts all links into organized lists
  • Image Extraction: Captures image sources and alt text
  • Multi-line Strings: Supports multi-line text with pipe notation

How to Use

  1. Input HTML: Paste your HTML code or upload an .html file
  2. Configure Options: Choose structure and formatting options
  3. Review Output: The YAML output updates automatically
  4. Copy or Download: Use the Copy or Download button to save your .yaml file

Output Modes

  • Nested Structure: Preserves full HTML hierarchy with nested objects
  • Flat Structure: Extracts content, links, and images into separate sections
  • With Attributes: Includes all HTML attributes in the output
  • With Comments: Adds generation timestamp and documentation

YAML Syntax Examples

# Nested structure example
document:
  title: "My Document"
  body:
    - tag: "h1"
      text: "Main Heading"
    - tag: "p"
      text: "Paragraph content"
      children:
        - tag: "strong"
          text: "bold text"

# Flat structure example
document:
  title: "My Document"
  content: |
    All text content
    on multiple lines

links:
  - text: "Example"
    url: "https://example.com"

images:
  - src: "logo.png"
    alt: "Logo"

Common Use Cases

  • Configuration Files: Convert HTML data to YAML config format
  • Data Export: Export HTML content as structured YAML
  • Content Migration: Migrate HTML content to YAML-based systems
  • Static Site Generators: Prepare content for Jekyll, Hugo, etc.
  • API Configuration: Create API configs from HTML documentation
  • Metadata Extraction: Extract structured metadata from HTML

YAML Features

  • Key-Value Pairs: Simple key: value syntax
  • Lists: Dash notation for arrays (- item)
  • Nested Objects: Indentation-based hierarchy
  • Multi-line Strings: Pipe (|) for literal blocks
  • Comments: Lines starting with # for documentation
  • Human Readable: Clean, minimal syntax

Indentation

YAML uses indentation to represent structure. The converter supports customizable indent sizes (2-8 spaces). Standard practice is 2 spaces per level.

Tips for Best Results

  • Choose Mode: Use nested for full structure, flat for simplified output
  • Clean HTML: Well-structured HTML produces better YAML
  • Attributes: Enable attributes to capture all HTML metadata
  • Review Output: Check the YAML syntax for your use case
  • Validate: Use a YAML validator to ensure valid output

Privacy & Security

All conversions happen locally in your browser. Your HTML is never uploaded to any server, ensuring complete privacy and security.