As great as Flash can be to create dynamic looking sites, it can also be dangerous. Adobe has been adamant about fixing issues within Flash, but as quickly as updates come out, new security holes are found. Many a user has fallen victim to Flash exploits and some don’t even know. Part of the reason Flash is plagued with so many security problems is how widely it’s used. Because it’s installed on nearly every computer ever made, there is a large incentive for a hacker to find exploits.
Mobile devices are the wave of the future and many mobile devices are already making up an impressive part of web traffic. While some high-end Android phones and tablets are Flash compatible, mobile flash is still plagued with lag and unresponsiveness. Apple has announced that it neither now, nor will ever support Flash on its iPhone and iPad devices. Since the iPad makes up most of the tablet market at current, that is a big deal.
While the availability of high-speed connections has increased dramatically for homes, more and more users find themselves in public locations. The Wi-Fi at your local Starbucks is likely far slower than at home and, as a result, Flash content takes ages to load. Many users get frustrated and stop visiting your site. There are plenty of users who don’t distinguish between connection speeds and will assume the problem is on your end. Nothing is worse than bad word of mouth that isn’t earned. Cutting down on Flash elements is the best way to ensure a fast-loading websites.