When your web designer builds your website, they should be developing it to load quickly. If any page on your website takes more than 4 seconds to load, then you have problems.
1) Search Engine Optimization: search engines are now taking into consideration page load time. So if your website loads slowly, you’re not going to perform as well on search engines.
2) Usability: your website visitors don’t want to wait more than 4 seconds to see your website. If they’re waiting this long, they’re probably hitting the back button before they even see your website.
How can I test how fast my web page loads?
There are a ton of great tools out there for testing page speed. I like to use http://tools.pingdom.com/fpt/ because it’s fast, easy, and shows me where there might be bottlenecks in a website.
Bottom line:
Test how fast your page is loading, and if it’s more than 4 seconds, contact your web developer to see how they can improve this (hopefully for free, since it’s something you should come to expect with your web development).