This validator checks the markup validity of Web documents in HTML, XHTML, SMIL, MathML, etc. If you wish to validate specific content such as RSS/Atom feeds or CSS stylesheets, …

A validator is a computer program used to check the validity or syntactical correctness of a fragment of code or document. The term is commonly used in the context of validating HTML, …

Online tool for validating web documents against W3C standards.

This free online HTML validator lets you validate your files against the w3c standards

Jul 11, 2025 · A validator is a program that checks for syntax errors in code. Validators can be created for any format or language, but in our context we speak of tools that check HTML, …

HTML Validator is a free online developer tool to validate HTML code against the W3C standards as known as HTML linter instantly. Supports partial HTML code validation. You can either …

To use HTML Validator, you simply need to enter the HTML code you want to validate into the validator or upload a file with the HTML code. Following an analysis of the code by the HTML …

Laravel is a PHP web application framework with expressive, elegant syntax. We’ve already laid the foundation — freeing you to create without sweating the small things.

The Markup Validation Service is a validator by the World Wide Web Consortium (W3C) that allows Internet users to check pre-HTML5 HTML and XHTML documents for well-formed …

The validator checks for well-formedness first, meaning that your XML file must be parsable using a DOM/SAX parser. Only then does it validate your XML against the XML Schema.