SEO Glossary / H /

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HALLWAY PAGE - Hallway pages are intended to act as index pages for search spiders. A Hallway page includes a listing of the entire pages present in a website or directory. It facilitates the indexing process for search engines.

HEADING TAG - HTML headings tag is used to indicate the theme/heading of a web page, a section or sub sections on a page. There can be 6 heading tags in HTML, defined through H1 to H6 in decreasing order of importance. H1 defines the largest heading and H6 defines the smallest heading.

HIDDEN TEXT - Hidden text is anything written on a web page that is not quite readable. Hidden text is used in excessive keywords stuffing on a web page without breaking the natural flow of text; it’s considered a spam tactic. It can be achieved by matching the font color with the background color, or keeping font size as 0.

HIJACKING OF WEBSITES - Hijacking of a website means its control has been taken over either fully or partially by some other entity. There can be different forms of hijacking with varying degree of severity. Popular hijack types are ‘The infamous 302 redirect hijacking’, SQL injection, authorization bypass, and password cracking etc.

HITS - It’s a metric for analyzing a website usage. A hit is a request to a web server for a file. Often it’s confused with the number of unique visits a website gets.

HTML SOURCE - HTML source code is the unrendered programming code of a web page, which can be publically viewed in a browser.

HTTP (HYPER TEXT TRANSFER PROTOCOL) - Hypertext Markup Language - HTTP is the standard information transfer protocol used by web servers and browsers to communicate. HTTP is an application layer network protocol built on top of TCP.

HTTP 301 (Status code definition) - 301 status code means the URI requested has “Moved Permanently” and has been assigned a new URI.

HTTP 302 (Status code definition) - 302 status code indicates that the document requested is “Found” however temporarily resides under a different URL.

HTTP 400 (Status code definition) - The 400 status code means a “Bad Request” stating that the server is not able to understand the document request due to a bad syntax. User need to redefine the request before retrying.

HTTP 401 (Status code definition) - The 401 status code means “Unauthorized”. This server requests user authentication prior to fulfilling the document request.

HTTP 403 (Status code definition) - The 403 status code means “Forbidden”. The server understood the request, however is refusing to fulfill it. It may be because the webmaster/administrator of the website does not want users to explore that content.

HTTP 404 (Status code definition) - The response error message “404” represents a document “Not Found”. This means that the client was able to communicate with the server, however could not find the requested document. This is the most common error. if a web page seize to exist, users trying to open it will get a 404 error message. Most sites are configured to show a custom error response for this type of error.

HTTP 410 (Status code definition) - It is similar to a 404 Not Found error message, the 410 status code states that the requested document is “intentionally gone”, is no longer available and there is no forwarding address.

HTTP 500 (Status code definition) - It indicates some internal server error which prevented the request from fulfilling.

HTTP 501 (Status code definition) - The 501 status code message is displayed when the server does not recognize the document request method. The server is not capable of fulfilling this request and states the request was “Not Implemented”.

HUBS - Hubs are connection point devices in a network. A hub connects different nodes and segments of a LAN.

HYPERLINKS - Hyperlinks are intended to provide cross connectivity between web pages or different sections of a web page. Clicking on hyperlink takes the user to the web address specified in the hyperlink.