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HTML Validation

Validating your HTML code ensures that it complies with the standards set by the World Wide Web Consortium (W3C). Valid code improves cross-browser compatibility, accessibility, and overall quality of your web pages.

Online Validators

Several online tools are available for validating HTML code. These tools check your code against HTML standards and provide detailed error reports.

W3C Markup Validation Service

The W3C Markup Validation Service is a widely used tool for validating HTML code. Simply enter the URL or upload the HTML file to validate your code.

Visit W3C Markup Validation Service

Validator.nu (HTML5 Validator)

Validator.nu is an HTML5 validator that checks your code against the latest HTML standards. It provides real-time validation as you type and supports custom validation profiles.

Visit Validator.nu

Browser Developer Tools

Most modern web browsers come with built-in developer tools that include HTML validation features. These tools can quickly identify syntax errors and other issues in your HTML code.

Google Chrome Developer Tools

Google Chrome's Developer Tools include a built-in HTML validator. Simply right-click on a web page, select "Inspect", and navigate to the "Console" tab to view HTML validation errors.

Mozilla Firefox Developer Tools

Mozilla Firefox's Developer Tools also include an HTML validator. Access it by right-clicking on a web page, selecting "Inspect Element", and navigating to the "Console" tab.

Command-Line Tools

If you prefer working from the command line, you can use command-line HTML validators to validate your HTML code locally.

HTML Tidy

HTML Tidy is a command-line tool that can clean up and validate HTML code. It checks for syntax errors, deprecated tags, and other issues in your HTML files.

Download HTML Tidy

Nu Html Checker (v.Nu)

v.Nu is a command-line HTML5 validator based on the Validator.nu service. It validates HTML files against the HTML5 specification and provides detailed error reports.

Visit v.Nu GitHub Repository

By regularly validating your HTML code using these tools, you can ensure that your web pages adhere to HTML standards and maintain high quality and compatibility across different browsers and devices.