Glossary of terms

301 redirect
301 redirect, aka permanent redirect, is a command that is applied on server level and means that a webpage has permanently moved to a new location. For example, if your website has two similar pages, page A and page B, and you decide to merge them into page C, then you will need to apply 301 redirect from page A to page C, and also from page B to page C. In this case if user tries to access page A or page B they will be redirected to the new page on your website, page C.

404 page
404 page is a page that contains a standard HTTP code which indicates that your webbrowser, e.g. Internet Explorer or Firefox, was able to make a connection to the server where the requested page is hosted, but the requested page could not be found. Some webmasters create custom 404 pages which can prompt the user to take another action, e.g. go to the homepage or to try to reload the page.

Site crawling
Site crawling is a process by which a computer program browses a website and indexes its content. The computer program that browses a website is known as web crawler, bot, or web spider.

Excel is a spreadsheet application that is part of Microsoft Office. It features calculation, graphs, pivot tables and more.

Flash, aka Adobe Flash, is a multimedia platform for creating animation and video. It is widely used to add interactivity to webpages. A website can be fully built on Flash.

Googlebot is the Google crawling bot. Crawling is a process by which Google discovers new pages from the web and adds them to its index.

Indexed page
Indexed page is a web page that has been discovered by a search engine and has been added into its index. If a page has been indexed by a search engine this means that it can appear for a relevant search query.