CLI Tool

HTML-Validate CLI

Offline HTML5 validator and linter CLI for checking marketing page markup quality.

8

Installation

npm install -g html-validate
Platform
Claude Code, VS Code
Pricing
free
Last Tested
2026-04-01

About this Tool

HTML-validate is an offline HTML5 validator and linter that checks HTML markup quality without requiring network access. Supports plugins, predefined configurations, and transformers. 59+ projects in npm registry use it. Actively maintained with regular updates. Useful for validating marketing landing pages and email templates.

Use Case Examples

  • Validate landing page HTML for proper semantic structure
  • Check email template markup for cross-client compatibility issues
  • Lint marketing site HTML as part of CI/CD pipeline

Score Breakdown

8

Overall Score

Based on 5 dimensions

Installation
9/10
Documentation
8/10
Relevance
7/10
Quality
8/10
Maintenance
9/10

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