HTML Formatter & Minifier

Beautify HTML with proper indentation, or minify it to strip unnecessary whitespace securely in your browser.

Indent:

Input HTML 0 characters

Output HTML

0 characters

Why Use Our HTML Formatter & Minifier?

Comprehensive feature breakdown for cleaning, beautifying, and compressing HTML web code instantly.

100% Client-Side & Secure

Managing HTML code often requires balancing clean human-readable maintenance with tight production compression. Messy indentation, irregular spacing, and bloated markup slow down debugging workflows and increase transfer sizes.

Our HTML Formatter & Minifier gives developers a rapid browser-based tool to beautify tangled markup into well-structured indentation hierarchies or strip away all non-essential whitespace for optimized production deployment.

Beautify

Smart HTML Formatting

Automatically structures nested DOM hierarchies with precise indentation rules for maximum code readability.

Minify

Aggressive Compression

Strips out redundant line breaks, trailing spaces, and unnecessary whitespace to decrease payload sizes.

Privacy

100% Client-Side Processing

All parsing and transformation executes securely inside your web browser. No source templates or code ever leave your device.

Custom

Flexible Indentation Controls

Choose between 2 spaces, 4 spaces, or hard tabs to match your team's exact coding style guidelines.

Clipboard

One-Click Copy Action

Quickly send your formatted or minified output straight to your system clipboard with a single click.

Speed

Lightning-Fast Execution

Optimized JavaScript string parsing ensures immediate results even on large, complex HTML templates.

Handy web tools for daily use. Everything runs right in your browser—no sign-ups, no cloud uploads, and your data stays entirely on your device.

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Sample Page

Featured Utilities

Formatters
Minifiers
Calculators

`; function loadSample() { document.getElementById('html-input').value = sampleHtml; formatHtml(); } function clearAll() { document.getElementById('html-input').value = ''; document.getElementById('html-output').value = ''; document.getElementById('error-banner').classList.add('hidden'); updateStats(); } function updateStats() { const inputVal = document.getElementById('html-input').value; const outputVal = document.getElementById('html-output').value; document.getElementById('input-stats').textContent = `${inputVal.length} characters`; document.getElementById('output-stats').textContent = `${outputVal.length} characters`; } function getIndentString() { const val = document.getElementById('indent-select').value; if (val === 'tab') return '\t'; const count = parseInt(val, 10); return ' '.repeat(count); } function formatHtml() { const raw = document.getElementById('html-input').value; const errorBanner = document.getElementById('error-banner'); const errorText = document.getElementById('error-text'); if (!raw.trim()) { document.getElementById('html-output').value = ''; errorBanner.classList.add('hidden'); updateStats(); return; } try { errorBanner.classList.add('hidden'); const formatted = beautifyHtml(raw, getIndentString()); document.getElementById('html-output').value = formatted; updateStats(); } catch (err) { errorText.textContent = "Failed to parse HTML structure. Please check for unclosed tags."; errorBanner.classList.remove('hidden'); } } function minifyHtml() { const raw = document.getElementById('html-input').value; const errorBanner = document.getElementById('error-banner'); if (!raw.trim()) { document.getElementById('html-output').value = ''; errorBanner.classList.add('hidden'); updateStats(); return; } errorBanner.classList.add('hidden'); // Simple robust HTML minification regex approach let minified = raw .replace(//g, '') // Remove comments .replace(/\s+/g, ' ') // Collapse whitespace sequences .replace(/>\s+<') // Remove space between tags .trim(); document.getElementById('html-output').value = minified; updateStats(); } function beautifyHtml(html, indentChar) { let formatted = ''; let indentLevel = 0; // Remove existing line breaks and extra spaces between tags to normalize html = html.replace(/>\s+<').trim(); // Match tags, comments, or text blocks const regex = /(<\/?[^>]+>)|([^<]+)/g; let match; // Self-closing tags or tags that shouldn't increase/decrease indent standardly const selfClosingTags = ['area', 'base', 'br', 'col', 'embed', 'hr', 'img', 'input', 'link', 'meta', 'source', 'track', 'wbr']; while ((match = regex.exec(html)) !== null) { let tag = match[1]; let text = match[2]; if (tag) { let isClosing = tag.startsWith('') || tag.startsWith(']+)/); let tagName = tagNameMatch ? tagNameMatch[1].toLowerCase() : ''; let isSelfClosing = tag.endsWith('/>') || selfClosingTags.includes(tagName); if (isClosing) { indentLevel = Math.max(0, indentLevel - 1); } formatted += '\n' + indentChar.repeat(indentLevel) + tag; if (!isClosing && !isSelfClosing && !tag.startsWith('