html html html
System Status: Active

HTML Formatter

Formatter Engine Ready

"Zero-latency processing via WebAssembly.
Data never leaves your local environment."

HTML Free Validator

Validate

Validate your HTML code with free for syntax errors and structural issues. Get detailed error reports and suggestions.

← Back to HTML Free Tool
HTML__SOURCE
STATUS: CHECKING
Code validation status: CHECKING
Editor currently loaded with html language support.
New
Introducing 22% OFF - Limited Time - Code: OFF22

LeapOCR

Convert Documents to Markdown & Structured Data with AI-powered OCR

01
Invoice Extraction
02
Handwriting Recognition

Combine world-class OCR with AI instructions for trusted extractions

Start for Free Book a Demo
$ leapOCR activate --intelligence --scale --trust
Spec Sheet // 001

HTML Formatter

A high-performance formatting engine for HyperText Markup Language. Standardizes indentation, corrects syntax topology, and optimizes DOM structure for production environments.

HTML Validator

A compliance engine that checks your markup against standard HTML specifications.

  • → Precision Debugging: Error telemetry highlights specific line numbers.
  • → Auto-Fix Protocol: The 'Format' action automatically repairs common syntax deviations.
  • → Client-Side execution: Validate sensitive code without network requests.

Capabilities

  • 01 Native Formatting Engine: Instantly standardizes HTML structure with configurable indentation (2/4 spaces, tabs).
  • 02 Payload Compression: Integrated Minifier Module reduces file size for faster load times.
  • 03 Syntax Integrity: Real-time validation detects unclosed tags and malformed elements.
  • 04 Local Persistence: Browser-based LocalStorage ensures work is never lost during session refreshes.
  • 05 WASM Architecture: Powered by WebAssembly for zero-latency processing without server-side data transfer.

Troubleshoot