HTML Validator: Check and Validate Your HTML Code - Free Online Tool

Welcome to our advanced HTML Validator tool! Easily check and validate your HTML code to ensure it's error-free and compliant with web standards. Our tool provides quick and efficient validation, helping you maintain high-quality, standards-compliant web pages.

HTML Validator Tool

Input: Add Your HTML Code Here

Validation Results:

Features of our HTML Validator

Comprehensive Validation

Ensure your HTML meets W3C standards with our comprehensive validation.

Download Validation Reports

Easily download your validation results as a report for further analysis.

Copy Validation Results

Quickly copy validation results to your clipboard for easy pasting elsewhere.

How to Use

Paste HTML Code

Copy your HTML code and paste it into the editor provided above.

Validate HTML

Click the "Validate HTML" button to check your code for errors.

Download or Copy Results

Once validated, you can download the report or copy it for your records.

Frequently Asked Questions

What is an HTML Validator?

An HTML Validator is a tool that checks your HTML code against web standards and syntax rules to ensure it's error-free and compliant.

Why should I use an HTML Validator?

Using an HTML Validator helps you identify issues in your code that could affect how your website displays or functions, ensuring better compatibility across different web browsers.

Is the HTML Validator free to use?

Yes, our HTML Validator is completely free to use. You can validate your HTML code anytime without any charges.

We Value Your Feedback

Our tools are constantly evolving to meet your needs. If you have any suggestions, feature requests, or encounter any issues, please let us know. Your feedback helps us improve and provide you with the best possible solutions.

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This is a sample HTML document for validation.

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`; htmlEditor.setValue(exampleHTML.trim(), -1); showMessage("Example HTML loaded!", "success"); } function clearEditor() { if (htmlEditor) htmlEditor.setValue("", -1); const validationOutput = document.getElementById("validationOutput"); if (validationOutput) validationOutput.innerHTML = ""; showMessage("Editor cleared!", "success"); } function toggleFullScreen() { if (!htmlEditor) return; if (!document.fullscreenElement) { const editorContainer = document.querySelector(".json-converter"); if (editorContainer.requestFullscreen) { editorContainer.requestFullscreen(); } else if (editorContainer.mozRequestFullScreen) { editorContainer.mozRequestFullScreen(); } else if (editorContainer.webkitRequestFullscreen) { editorContainer.webkitRequestFullscreen(); } else if (editorContainer.msRequestFullscreen) { editorContainer.msRequestFullscreen(); } } else { if (document.exitFullscreen) { document.exitFullscreen(); } else if (document.mozCancelFullScreen) { document.mozCancelFullScreen(); } else if (document.webkitExitFullscreen) { document.webkitExitFullscreen(); } else if (document.msExitFullscreen) { document.msExitFullscreen(); } } } function showMessage(message, type) { const messageContainer = document.getElementById("messageContainer"); if (messageContainer) { messageContainer.innerHTML = `

${message}

`; setTimeout(() => { messageContainer.innerHTML = ""; }, 3000); } } document.addEventListener("DOMContentLoaded", function() { initializeEditors(); const htmlFileInput = document.getElementById("htmlFileInput"); if (htmlFileInput) { htmlFileInput.addEventListener("change", function(event) { const file = event.target.files[0]; if (file && htmlEditor) { const reader = new FileReader(); reader.onload = function(e) { htmlEditor.setValue(e.target.result, -1); }; reader.readAsText(file); } }); } const mobileMenu = document.getElementById("mobile-menu"); const navMenu = document.querySelector(".nav-menu"); if (mobileMenu && navMenu) { mobileMenu.addEventListener("click", function() { navMenu.classList.toggle("active"); this.setAttribute( "aria-expanded", this.getAttribute("aria-expanded") === "true" ? "false" : "true", ); }); } const subMenuTriggers = document.querySelectorAll( ".has-submenu > .nav-link", ); subMenuTriggers.forEach((trigger) => { trigger.addEventListener("click", function(e) { if (window.innerWidth <= 768) { e.preventDefault(); this.parentNode.classList.toggle("active"); } }); }); });