How to validate HTML Code with W3C Validator?

Introduction

W3C provides the services to check the markup validity of any HTML, XHTML, SMIL, and MathML documents.W3C stands for World Wide Web Consortium. This is an organization that sets the rules for global web standards. W3C has introduced more than 90+ standards that are followed worldwide. Generally, we use W3C validation to improve the SEO(Serch Engine Optimisation) and check the errors in the code. 

Here we will discuss using the W3C validation tool to validate our HTML code. After reading this article, you will be able to use this tool and make sure always validate your HTML code before deploying.

W3C Validator

W3C validation is required to improve the web services and to check the errors and bugs.

Why do we use W3C validation?

• It makes your website easily surfed and accessible by different types of devices like smartphones, tablets, and laptops.
• It helps your website to load faster on browsers.
• It reduces the size of the code.

To use the service, you have to visit the official site of W3C Markup Validation or simply click on the following link.

https://validator.w3.org/

If you click on the link, you will get the following interface.

source:https://validator.w3.org/

As we can see, there are three ways to validate your code.

• Validate by URI
• Validate by File Upload
• Validate by Direct Input

So let's explore them one by one.

Validate by URI

Suppose we have already deployed our document, and now we want to validate the code so that we can use Validate by URI option for validation. First, you have to select the "Validate by URI" tab and then provide the URL of your document in the address input box. In the "More Options" dropdown, we can choose the character encoding and document type or leave it to default (detect automatically). Two radio buttons have two options; first, List Messages Sequentially and Group Error Messages by Type you can choose any one of them and click on the check button.

  

source:https://validator.w3.org/,https://640f7d38f28b79023c073c5e--shiny-genie-dd8f95.netlify.app/

Here we go, In the upper output, we can see that this document has three errors. Now coming to the second option of validation.

Validate by File Upload

To use this way, first select the "Validate by File Upload" tab and click on the chosen file and select your document file and then click on the check button.

 

source:https://validator.w3.org/

In this output, we got three errors. Now coming to the third and last way to validate our document.

Validate by Direct Input

In this way, we can validate code by providing direct input. First, select the "Validate by Direct Input" tab, then write your code in the textbox and click the check button.

source:https://validator.w3.org/

In this output, there are three errors. We can validate using any option according to your conditions.

Conclusion

If you want to improve the ranking of your website, then it should meet the W3C standard. If you are designing or redesigning the website, you should always follow the W3C validation rules to make your website faster and make your website rank on the search engine.