html-diff

网页相似度判断：根据网页结构判断页面相似性 ，可用于相似度计算、越权检测等(Determine page similarity based on HTML page structure)

A library for comparing two HTML files/snippets and highlighting the differences using simple HTML. Includes support for comparing complex lists and tables

Calculate the differences between two XML/HTML documents.

Compare HTML contents

Compares Nokogiri XML and HTML documents, nodes and node sets for equality or equivalency. Returns a list of differences and can exclude chosen nodes or attributes.

MIGRATED TO CODEBERG -- A HTML diff generator with display HTML output.

exact diffs of rich text

Symfony Bundle for caxy/php-htmldiff library (https://github.com/caxy/php-htmldiff)

Reusable HTML diff visualizer for browser apps with isolated styles and Vite builds.

Monitors DOM structure changes on target websites to protect web scraping pipelines from breaking silently. Using no AI, no ML, no black boxes. Pure algorithmic approach.

This tool compares old and new versions of html and generates color-coded html in a diff format.

Intelligent web page comparison tool with Wayback Machine support and visual regression testing

Semantic structured diffs and GitHub-style text diffs for PHP: Diff::between() reports added, removed, modified and moved values at their paths, with identity-aware lists and redaction; Diff::text() gives Myers line diffs, hunks, unified patches and HTML.

A TypeScript library for rendered HTML visual diff with side-by-side DOM comparison, npm package output, and browser SDK support.

Diff and markup HTML with <ins> and <del> tags.