HTML Minifier

Compress HTML code by removing whitespace, comments, and optional tags. Free online HTML minification tool.

Original HTML

Size: 0 bytes

Minified HTML

Size: 0 bytes

Keyboard Shortcuts

Ctrl+Enter Minify
Ctrl+Shift+C Copy
Ctrl+L Clear

Frequently Asked Questions

HTML minification removes unnecessary characters from HTML code without changing functionality. This includes removing whitespace, comments, and optional tags to reduce file size and improve page load times. Minified HTML is smaller and faster to transfer over the network, which is especially important for mobile users and SEO.

Yes, HTML minification is safe when done correctly. Our tool preserves the structure and functionality of your HTML while removing only unnecessary characters. However, always test minified HTML before deploying to production. Some edge cases, like pre-formatted text or whitespace-sensitive content, may require careful handling.

Yes, minifying HTML can improve SEO indirectly by reducing page load times. Faster loading pages provide better user experience and are favored by search engines like Google in their ranking algorithms. Page speed is a confirmed ranking factor, and smaller HTML files contribute to faster initial page loads and better Core Web Vitals scores.

Embed this tool

<iframe src="https://devtoolbox.dedyn.io/tools/html-minifier" width="100%" height="600" frameborder="0"></iframe>
`; updateSizes(); }); // Clear button clearBtn.addEventListener('click', () => { htmlInput.value = ''; htmlOutput.value = ''; updateSizes(); }); // Auto-update size on input htmlInput.addEventListener('input', updateSizes); // Keyboard shortcuts document.addEventListener('keydown', (e) => { // Ctrl+Enter: Minify if (e.ctrlKey && e.key === 'Enter') { e.preventDefault(); minifyBtn.click(); } // Ctrl+Shift+C: Copy if (e.ctrlKey && e.shiftKey && e.key === 'C') { e.preventDefault(); copyBtn.click(); } // Ctrl+L: Clear if (e.ctrlKey && e.key === 'l') { e.preventDefault(); clearBtn.click(); } }); // FAQ accordion document.querySelectorAll('.faq-question').forEach(question => { question.addEventListener('click', () => { const item = question.parentElement; const wasActive = item.classList.contains('active'); // Close all items document.querySelectorAll('.faq-item').forEach(i => { i.classList.remove('active'); }); // Open clicked item if it wasn't active if (!wasActive) { item.classList.add('active'); } }); }); // Initialize updateSizes(); // Track recently used tools try { const recentTools = JSON.parse(localStorage.getItem('recentTools') || '[]'); const toolData = { name: 'HTML Minifier', url: '/tools/html-minifier', timestamp: Date.now() }; const filtered = recentTools.filter(t => t.url !== toolData.url); filtered.unshift(toolData); localStorage.setItem('recentTools', JSON.stringify(filtered.slice(0, 5))); } catch (e) { // Ignore localStorage errors }