Search Engine Optimization

The following are a few reasons why some pages may not be indexed on Google: Robots.txt - It can protect or hide a page from search engines. (User-agent: * Disallow: / ) .htaccess - Bad configuration. Meta Tags Optimization - Improper coding Example: <meta name="description" content="Example" /> <meta name="keywords" content="Example" /> Sitemaps - Not updating or old sitemap. Duplicate page - Duplicate pages should be deleted. Example - example.com, example.com/id=0 Inherited issues and connectivity or DNS issues.  

First let’s see 2013 google algorithm changes:- 1.#24 Panda — 2013 January 22. 2.#25 Panda — 2013 March 14. 3.Phantom — 2013 May 9. 4.Domain Crowding — 2013 May 21. 5.#4 Penguin 2.0 — 2013 May 22. 6.Payday Loan — 2013 June 11. 7.Panda Dance — 2013 June 11. 8.Multi-Week Update — 2013 June 27. 9.Panda Recovery — 2013 July 18. 10.Knowledge Graph Expansion — 2013 July 19. 11.In-depth Articles — 2013 August 6.