Crawling: When a Search Engine spider(s) literally crawls your site following all the internal and external links. (Unless its a nofollow link). Example <a href="site.com/link" rel="nofollow"> Indexed: When a Search Engine has crawled your site with a spider and stored what it saw in its database (index) (Unless it has noindex tag). Example <META NAME="ROBOTS" CONTENT="NOINDEX, NOFOLLOW">
Crawled = > Search engine ( yahoo, bing, google, google mobile ) visited your site and did an exploratory visit. The bot ( robot ) took inventory of your website architecture, pages, images, pdf files. Index = > The action of adding pages, images, pdf files to the search engine database. When a user hits a keyword associated with your page, image,pdf file the search engine says Eureka I know something of interest in this query ( search ). The goal is to have all your crawled pages indexed. You may have 20 pages crawled but only 3 were indexed. The process is a journey that you have to review daily and keep working on your content, speed, keyword content, title tags, etc etc etc. Hope this helps. Good luck, Braulio
Hello, Braulio's explanation is pretty clear but here is a pretty good video describing the differences: http://www.google.ca/insidesearch/howsearchworks/crawling-indexing.html Simon
Thanks Simon. I like this short video. I will show it to customers to explain to them how search works and the value added use of paying for the seo service.
Here is a good and useful article named " Essential Steps To Get Mobile Website Design Listed On Search Engines" . The article explains the difference between indexing and crawling. In addition, the article explains the roles of indexing and crawling of a site and its impact on getting listed on search engine search results. Hope this helps, Braulio
Well Small thing but should be clear to everyone, nice thread and nice explanation from everyone specially Braulio...