# Introducing HTML Inspector

DevFeed: [Introducing HTML Inspector](<https://devfeed.tech/articles/introducing-html-inspector-29511.md>)

Original publisher: [Read original article](<https://philipwalton.com/articles/introducing-html-inspector/>)

Published: 2013-06-11T15:22:52Z

Content type: tutorial

Language: en

Sources: [Philip Walton](<https://devfeed.tech/sources/philip-walton.md>)

Topics: [HTML](<https://devfeed.tech/topics/html.md>), [Code quality](<https://devfeed.tech/topics/code-quality.md>), [JavaScript](<https://devfeed.tech/topics/javascript.md>), [Testing](<https://devfeed.tech/topics/testing.md>), [browser](<https://devfeed.tech/topics/browser.md>), [Document Object Model (DOM)](<https://devfeed.tech/topics/dom.md>), [W3C](<https://devfeed.tech/topics/w3c.md>), [jQuery](<https://devfeed.tech/topics/jquery.md>)

Tags: [browser](<https://devfeed.tech/tags/browser.md>), [code-quality](<https://devfeed.tech/tags/code-quality.md>), [html](<https://devfeed.tech/tags/html.md>), [javascript](<https://devfeed.tech/tags/javascript.md>), [testing](<https://devfeed.tech/tags/testing.md>), [w3c](<https://devfeed.tech/tags/w3c.md>)

## AI overview

The article introduces HTML Inspector, a customizable and extensible JavaScript tool that runs in the browser to check HTML markup. It explains how the tool traverses the DOM, applies rules, reports errors, and differs from the stricter, non-extensible W3C Validator.

## Source excerpt

HTML Inspector is a code quality tool to help you and your team write better markup. It's written in JavaScript and runs in the browser, so testing your HTML has never been easier.