This search engine glossary will help you better understand some of the terms commonly used in the SEO industry.
404 Error Page
The web page that displays when a user tries to view a page that no longer exists or the page file name has changed.
Percentage of site visitors who view a page and then exit without linking to other pages on the site.
More correctly, these are ALT “attributes” (e.g. IMG is a “tag”). This is text coded in the HTML that associates words with web graphics.
The number of links pointing to a website, “link popularity”.
Web content saved by the search engines in their indexes.
A way to engage the website visitor that encourages them to interact with the company.
At the same URL (web address) showing one page to a search engine spider and a different page to a human visitor. Frowned upon by search engines as deceptive, sites may be severely penalized by the engines if they use cloaking.
Crawler-based search engines
Engines that use automated software to index the billions of files online.
When a website visitor takes the desired action, such as a sale or downloads a file.
CTR “Click Through Rate”
Percentage of users who click an online ad after viewing it.
Websites that list other sites by category, e.g. Yahoo! Directory.
A directory run by volunteers under the Open Directory project, www.dmoz.org.
Macromedia software that creates vector-based graphic animations with small file sizes for use online.
Using a specific type of HTML code that places “pages inside pages”. Has significant disadvantages and a few advantages.
H1, H2 tags
In HTML, the code used to define a page title or subhead.
Text on a web page that is created using HTML (which can be indexed by the engines) as opposed to a graphic (which cannot).
A link from one web page to another (links can also point to another location on the same page).
Indexing / indexable
Online content that the search engines can index. Some content is not indexable (e.g. locked PDF files, text in a graphic).
A programming script used on websites.
Google searches not only for your search terms but also for words that are similar to some or all of those terms, including plurals.
The number of links pointing to a website.
“Hidden” HTML code that contains a descriptive sentence or two about the web page.
That part of the search engine results that are not paid for, typically in the central area of the results page.
Factors considered by the search engines when ranking a page that are not part of the web page, e.g. backlinks.
Factors considered by the search engines when ranking a page that are part of the web page, e.g. text content, title text, etc.
See “Natural Listings”
Devised by Google, it measures not only how many links point to a website, but the “quality” of the sites providing the links.
The number of requests to view a specific web page in a specific time frame (the same person could make multiple requests).
Paying money to be listed in a search engine or online directory.
Paying money to have an advertisement shown on a search engine results page.
Portable Document Format created using Adobe Acrobat software.
Performing a search with quotation marks around the phrase so that the search results will show web pages with the exact phrase.
A form of online advertising that opens a new web browser window to display advertisements.
PPC “Pay Per Click”
Paying a small amount each time a user clicks on an online ad.
A file on the server indicating that the requested page has permanently (301) or temporarily (302) been moved to another location.
A text file that instructs the search engines about pages or directories to exclude from its database.
ROI “Return on Investment”
How much revenue is generated compared to how much was spent on a marketing campaign
Search Engine Marketing (SEM)
The practice of marketing and advertising through the search engines.
Search Engine Optimization (SEO)
Designing a website so that it ranks highly in the search engines when someone searches for specific phrases related to the site.
Search Engine Rankings
The position a site has on a search results page when a specific phrase is searched for.
Search Engine Referrals
Visitors who arrive at a website after clicking a link on a search engine results page.
Search Engine Results Page (SERP)
The page that displays in a search engine when a specific phrase is searched for.
The word or words entered by the user into the search engine.
Identifies sites that the search engines think are the same theme.
In HTML, an area where text is placed that shows at the very top of the browser window. Search engines consider this area critical.
The number of individuals who visit a website during a specific time (the same person visiting twice is only counted once).
Software that browses the Web in an automated manner and keeps a copy of visited pages in its database. Also known also as a crawler.
An online seminar that may contain audio and video.
Search Engine Saturation
The number of web pages that a search engine has indexed from your website.
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