HTML Minifier Tool

This tool accepts an HTML string as input and returns a minified version. It preserves document semantics while removing non-essential whitespace, inline comments (if enabled), and redundant attributes where safe. It tokenizes content to avoid altering content inside pre, code, and textarea blocks and script/style blocks. The primary use case is optimizing page payloads for web delivery and performance budgets. It targets frontend developers, build pipelines, and CMS editors who need deterministic, repeatable output without manual edits. The output is a single HTML string suitable for deployment in static hosting, templating, or serverless functions.
Core features: required: whitespace collapsing, comment removal (optional), attribute quoting normalization, removal of unnecessary line breaks; optional/advanced: preserve specific blocks, minify inline CSS/JS when present, maintain doctype and character references, handle Unicode safely. The tool performs a lexical pass rather than a full DOM rewrite to maintain compatibility with common HTML features. It guarantees that the resulting HTML is functionally equivalent for rendering in modern browsers and preserves essential attributes like src/href values that affect layout or behavior.
Use cases include optimization during deployment, performance budgeting in CI pipelines, and content-intensive sites where repeated minification is desirable. Differentiators include deterministic output across engines, explicit handling of inline content, and a clear separation of required vs optional minification steps. This tool is designed for repeatable automation and as a drop-in utility in tooling stacks.