It’s good to alter the website design within 12 months. Absolutely fresh designs or some make-over in designs, enforce search engines to crawl your web pages frequently. Design trends transform frequently. At the time, when your website is still holding the design that is out of the date, then definitely it’s going to leave a bad impression on visitor’s mind. Additionally, search engines also prefer the websites with the trendy designs, when it comes to compare it with the website having old design.