HTML Editor: Edit, Preview, Format & Minify — Tutorial

Upload .html/.htm (max 2MB) or click New File for full-screen editing, live preview, format, minify, copy, and save — all local.

Features

• Upload or blank New File.
• Views: code, split (code + iframe), fullscreen preview.
• Toolbar: Reset | view switcher | Format / Minify / Copy / Save.
• Format and minify update the buffer only — they do not auto-copy.
• Save uses the system dialog; after success the button becomes Auto-saving (green status style, disabled) with auto write-back (restores Save if the file is deleted; falls back to download when unsupported).
• Preview runs in a local iframe sandbox (inline CSS/JS OK).

Use Cases

• Tweak landing-page HTML with instant preview.
• Beautify or minify markup before pasting into another system.
• Learn by comparing source and render side by side.

How to Use

1. Upload or create a file to enter the editor.
2. Switch Code / Split / Preview; split refreshes the iframe shortly after edits.
3. Format or Minify without auto-copy.
4. Copy for clipboard, or Save (rename allowed); after success it shows Auto-saving and later edits may auto-save.
5. Reset returns to the entry cards.

Notes

• Local-only.
• .html/.htm only, max 2MB; huge files may lag.
• Format / minify overwrite the current source.

Related Keywords

HTML Editor, HTML Preview, HTML Formatter, HTML Minifier, Online HTML, htmledit, Sanye Hub, Online Tools, HTML