Page Outliner

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Overview

The Page Outliner visualizes the HTML structure of any webpage by applying colored outlines to elements, making it easy to understand complex layouts and debug structural issues.

This powerful visualization tool reveals invisible structural relationships and helps developers understand how CSS grid, flexbox, and other layout systems work in practice.

Key Features

  • Visual HTML structure highlighting with colored outlines
  • Multiple outline color schemes (RGB, random colors)
  • Customizable opacity levels (25%, 50%, 75%, 100%)
  • Element type filtering (Full Page, Headings, Paragraphs, Custom)
  • Real-time outline application and removal
  • Save and restore outline configurations
  • Export outline CSS for debugging purposes
  • Nested element relationship visualization
  • Layout debugging assistance
  • CSS Grid and Flexbox structure analysis

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