Learn how to test and validate your HTML code for errors and compatibility using online tools. Improve your site's layout, functionality, accessibility, performance, and SEO.

Formatting HTML code means applying consistent rules and conventions to your markup, such as indentation, spacing, alignment, comments, and naming. This has several benefits; it makes your code ...

The title tag is a section of HTML code that every page should have. It declares what the page’s title is. For example, here’s the title tag for the Search Engine Land article I wrote earlier ...

To view source code on a webpage using frames, repeat the steps in each frame. If the webpage won't allow you to right-click, view the HTML through the browser's menu bar.

Search Engine Land's Guide to SEO Chapter 3: HTML Code & Search Engine Ranking Success Factors explains HTML elements & using structured data.

You know the title attribute? I can do this: I'm a div with a `title` And now if I'm on a device with a mouse pointer ...