HTML Formatter Pretty

This tool formats HTML into a clean, human readable structure. It is aimed at front-end developers, code reviewers, and teams enforcing a shared markup style. It handles code copied from editors, generated by templates, or legacy markup that lacks consistent indentation and spacing, reducing cognitive load during review and maintenance.

Conceptually, the tool parses the input into a hierarchical DOM-like model and renders it back with defined indentation levels, line breaks, and a stable attribute layout. It preserves semantics and content while eliminating irregular whitespace. The result is deterministic, making diffs easier to review and ensuring predictable formatting across editors, environments, and version control systems.

Core features include configurable indent size (2 or 4 spaces), optional line wrapping, support for HTML5 syntax, and a consistent approach to presenting attributes. Optional advanced options include preserving original attribute order, adjusting max line length, and choosing to minify after formatting. It gracefully handles void elements and preformatted blocks.

Typical use cases span embedding formatted markup in documentation, preparing samples for tutorials, and CI pipelines that enforce style guides. The tool focuses on domain logic rather than UI and offers outputs suitable for automated checks and downstream tooling. It differentiates itself by explicit control over formatting decisions and robust handling of mixed content.

Error handling covers malformed input by recovery heuristics and safety nets for extremely nested or large documents. It avoids altering semantics or script contents, and returns a best effort formatted result even when input contains non standard constructs. In practice, teams adopt the tool to standardize markup across repositories, enabling consistent code style audits and improved onboarding for new engineers.