Công cụ định dạng HTML

HTML formatter: paste HTML to beautify or minify with highlighting and error hints for front-end and code cleanup. Supports batch processing and one-click copy.

Cách sử dụng

Paste HTML code to get the formatted result automatically.

Overview

HTML Formatter is a code tool that HTML formatter: paste HTML to beautify or minify with highlighting and error hints for front-end and code cleanup. Supports batch processing and one-click copy. It runs 100% in your browser with no upload, so you get instant results with privacy. Whether you need a quick answer or batch processing with precise control, you can enter, validate and export in seconds. The UI is responsive on mobile, tablet and desktop and supports one-click copy.

Use cases

  • Convert between CSV/JSON/Markdown
  • Escape code for string literals
  • Test regex with highlights
  • Format and validate JSON
  • Use it to cross-check “HTML格式化、html formatter” in reports, docs or APIs to avoid manual conversion errors

How to use

  1. 1 Paste code/data
  2. 2 Pick action and options
  3. 3 Fix highlighted errors
  4. 4 Copy or export

Highlights

  • Local & private: processing stays in your browser
  • Live validation with tolerant parsing
  • One-click copy and export for docs, code or sheets
  • Batch and offline support under poor network

Notes

  • Disable live validation for large files
  • Strict JSON disallows comments/trailing commas
  • Watch greedy vs lazy regex

FAQ

Why invalid?
Trailing commas, single quotes or BOM often cause it.
Offline?
Yes, parsing is local.
How is HTML Formatter different?
It runs locally with a focus on speed and privacy, plus tolerant parsing for “HTML格式化、html formatter” and one-click copy for reuse.
Can I use results in official reports?
Use it as a working draft and cross-check with authoritative sources; keep the exported log and parameters for traceability.
Tip:Tip: Bookmark this page or pin the tab; find related tools via categories and search (convert → calculate → export).

All calculations run locally in your browser; nothing is uploaded.