H

Homepage

The front page of a website. Usually found at the root of a domain, eg http://www.example.com/.

Heading Tags / Elements (H1, H2, H3, H4, H5, H6)

The heading element in HTML defines a structure for headings in a document. Starting with H1 as the most important heading, descending to H6, heading tags have been a standard part of HTML since HTML 2.0.

Hits

Hits are visitors to a website. A successful campaign could be said to be one which delivered a lot of hits. Hits are not necessarily specific to a particular platform, they could be search engine visits, PPC, social media, or from people clicking a link on another website.

Hreflang Tag

The hreflang attributes can be used to ensure the correct language and regional websites are served in search results. The Hreflang specification can be applied using the rel="alternate" and hreflang="x" attributes with the applicable language code inside a link element, via a HTTP header or a sitemap. Read our guide to the Hreflang specification here.

Hummingbird

Hummingbird is a Google search algorithm, first announced August 2013. Hummingbird was aimed at understanding the concepts behind keywords.

H1 Tag / Element

The H1 tag is the most important heading element on a web resource. Generally there should only be one H1 on a page, but it is not a major problem to use more than one if it helps to describe the content of a page, if there are for example there is more than one section on a page.

Head Term

A popular keyword with high search volume that is usually difficult to rank for.

Also known as: Head Keyword, Short-Tail

Hidden Text

Any text that can’t be seen by a user that is intended to manipulate search rankings by loading webpages with content-rich keywords and copy. This technique is against Google’s Webmaster Guidelines and can result in a manual action. For example, adding text that is:

  • Too small to read.
  • The same color as the background.
  • Using CSS to push the text off-screen.

Hilltop Algorithm

Influenced by the HITS Algorithm, and added to Google’s algorithm in 2003, Hilltop assigned “expert” status to certain websites or webpages published about a specific topic that also link to unaffiliated pages about that topic.

Recommended reading:

  • Hilltop: A Search Engine based on Expert Documents (Krishna Bharat & George Mihaila)

HITS Algorithm

Hyperlink-Induced Topic Search is a link analysis algorithm that assesses a value not just based on content and inbound links (authorities), but also its outbound links (hubs).

Recommended reading:

Homepage

The default, or introductory webpage, of a website.

.htaccess File

A server configuration file that can be used to rewrite and redirect URLs.

HTML

Stands for Hypertext Markup Language. HTML tags are specific code elements that can be used to improve the effectiveness of SEO for webpages and websites.

HTTP

The Hypertext Transfer Protocol is how data is transferred from a computer server to a web browser.

HTTPS

Hypertext Transfer Protocol Secure uses a Secure Sockets Layer (SSL) to encrypt data transferred between a website and web browser. HTTPS is a minor Google ranking factor.

Hub Page

An authoritative central resource (e.g., page or article), dedicated to a specific topic (keyword), that is continually updated and linked to, and also links out to topically-relevant webpages.

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