Flash may be visually appealing to your site visitors and may able to keep your audience stay a bit longer in your site (if they are able to find your site from the search engines) but to answer this question, yes. Flash does affect SEO. Period.
Lots of people may think having a flash website can attract more visitors and it may be right in some point but before the customers find your site, the first thing that you have to deal with is search engines. Unfortunately, search engines like text more than flash. They crawl your website by scavenging keywords, headings and relevant content. However if your site was built entirely in flash, the crawlers may having a hard time to collect any relevant information from your site result in having poor ranking.
SEO is all about relevant content and this is exactly what search engines looking for in order for them to create a relevant and content rich database about any categories. Using too much graphics and flash may cause damage effects on your SEO.
However, this doesn’t mean you can’t incorporate flash into your website. There are lots of famous branded web site was built entirely flash and still getting a good ranking from search engines. It is not impossible do that but the process may be tedious, long and cost you much more than ranking a non-flash website. In a long run, it may not be a good idea to invest in a flash-based website.
Enest Studio is a full service web design and online marketing company based in Pasadena, California. Our services include website design, online marketing such as search engine optimization, social media marketing and other design services. If you are interested in any of our services, feel free to contact us @ 626.470.7012 or via our contact us page.