HTML Formatter

HTML Formatter is a parser-driven tool that accepts raw HTML and applies formatting, minification, and validation in a standards-compliant manner. It targets developers, site builders, and content teams who need predictable markup across environments. The service operates by parsing input into a DOM-like tree, then reconstructing HTML with consistent indentation, quote usage, and whitespace rules to produce a stable, portable output. In minify mode, it trims whitespace while preserving content-sensitive areas such as pre and code blocks. It also supports HTML5 validation checks to surface syntax issues and DOM-structure anomalies. The combination of formatting, minification, and validation reduces manual edits, speeds up code reviews, and helps ensure accessibility and compatibility across browsers. Unique value comes from deterministic output, recoverable error handling for mildly malformed input, and the ability to export multiple outputs (formatted and minified) from a single pass. Typical use cases include preparing templates for CMS themes, cleaning batch HTML assets in build pipelines, and validating snippets in documentation pipelines.
This tool emphasizes standards-compliant parsing and operator-friendly options (indent size, quote style, and preservation of comments when requested), enabling consistent results regardless of the source editor. It differentiates itself from simple string replacements by relying on a proper parser and a configurable serializer that respects HTML semantics and common edge cases.