HTML Glossary

Here you can find important tech terms and definitions, explained in a simple and clear way.

Nofollow Link

A Nofollow Link is a hyperlink that contains the HTML attribute rel="nofollow". This specific tag acts as a directive to search engine bots (like Googlebot), telling them: "Do not follow this link, and do not pass any of my website's SEO authority (PageRank) to the destination URL." To a human user, a nofollow link looks and functions exactly like a normal link.

Iframe (Inline Frame)

An Iframe (Inline Frame) is an HTML document embedded inside another HTML document on a website. It essentially cuts a "window" into your webpage, allowing you to display content hosted on a completely different server without sending the user away from your site. Common uses include embedding YouTube videos, Google Maps, or third-party scheduling widgets.

Source Code

Source Code is the fundamental, underlying set of human-readable instructions and statements written by a programmer using a specific programming language (like HTML, CSS, JavaScript, or Python). It is the raw structural DNA of a website or application before it is translated (compiled) by a web browser or server into the visual, interactive interface that the user actually sees.

Semantic HTML

Semantic HTML is the practice of using HTML markup tags that clearly convey the meaning and structure of the content they contain, rather than just dictating how it should look visually. For example, instead of using a generic <div> (which has no meaning) for everything, a semantic developer uses <header>, <nav>, <article>, <aside>, and <footer> to explicitly describe the role of each section on the page.

Schema Markup (Structured Data)

Schema Markup (also known as Structured Data or JSON-LD) is a standardized vocabulary of tags added to a website's HTML code. This code translates human-readable content into a machine-readable format for search engines. It explicitly tells Google, "This string of numbers is a price," "This text is a customer review," or "This paragraph is the answer to a Frequently Asked Question."

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