Formateur HTML en Ligne Gratuit

Free Gratuit · Sans inscription · Données non envoyées
Indent
Error
HTML INPUT
OUTPUT
// formatted HTML output

Plus d'Outils pour Développeurs

Formateur CSS
Formater & minifier
Formateur SQL
Formater SQL
HTML→Markdown
Vers Markdown
Formateur XML
Formater & valider
Regex
Tester en direct
URL Encoder
Encodage URL
Formateur JSON
Formater & valider
Base64
Encoder/Décoder

Pourquoi c'est le Meilleur Formateur HTML en Ligne

Formater & Embellir HTML

Paste minified or poorly indented HTML and get back cleanly structured code with consistent indentation. Supports 2-space, 4-space, and tab indentation. Void elements like <br>, <img>, and <input> are handled correctly.

Coloration Syntaxique

Color-coded tag names, attributes, values, comments, and doctype declarations make formatted HTML easy to review. The output panel renders the highlighted code without executing it.

Minifier HTML

Strip all formatting whitespace and HTML comments to produce compact, production-ready HTML. Reduces file size and speeds up page load time without changing how the page renders.

Confidentialité d'abord

All processing runs entirely in your browser — no HTML is ever sent to a server. Safe for templates containing sensitive data, internal admin pages, or proprietary front-end code.

Questions Fréquentes

What is an HTML formatter?

An HTML formatter (also called a beautifier or pretty printer) takes raw or minified HTML and reformats it with consistent indentation and line breaks, making the code easier to read and debug. It does not change how the HTML renders in a browser.

Does formatting HTML change how it looks in the browser?

No. HTML formatters only add or remove whitespace between tags. Browsers collapse multiple whitespace characters in most contexts, so formatting changes are invisible to end users. The only exception is content inside pre or textarea elements, where whitespace is significant.

What is HTML minification?

HTML minification removes unnecessary whitespace and comments to reduce file size. Minified HTML loads faster because smaller files transfer more quickly over the network. It is commonly applied to production HTML by build tools like webpack or Vite.

Why is my HTML indentation inconsistent?

Inconsistent HTML indentation is usually caused by mixing spaces and tabs, copying from different editors, or manual editing errors. Pasting your HTML into this formatter and applying a consistent indent style fixes all indentation at once.

Guide approfondi
Guide Outils Essentiels
Regex, Cron, Timestamp, URL & plus
Lire le guide
`; function lS(){document.getElementById('ia').value=SMP;onI();} async function pasteIn(){try{const t=await navigator.clipboard.readText();document.getElementById('ia').value=t;onI();}catch(e){}} async function cpO(ev){if(!oD)return;if(await cpT(oD)){const b=ev.currentTarget;b.style.color='var(--a)';setTimeout(()=>b.style.color='',900);}} function dlF(fn){if(!oD)return;const a=document.createElement('a');a.href=URL.createObjectURL(new Blob([oD],{type:'text/html'}));a.download=fn;a.click();} document.addEventListener('keydown',e=>{if((e.ctrlKey||e.metaKey)&&e.key==='Enter'){e.preventDefault();fmt();}});