Next, your website has to work well – period. Sites that are broken will not only cause potential customers to leave, but will also cause your site to suffer in the results pages of major search engines. Websites with missing pages, broken links and scripting errors are not the ideal user experience. Web pages that jitter or bounce around in the browser window due to poor loading sequences will also cause your website to suffer in the eyes of prospects and customers. Special fonts or effects that rely on your visitors having the latest browser versions or support for programming can leave empty holes in your web pages and empty holes in your bottom line if the majority of your prospects and customers run with older browsers.Fortunately, when a website is having errors of this kind, it is often easy to tell. But it does require that somebody is looking. It also requires that somebody is looking at every page on your website. Every time your website is updated, even a single page, it is possible an error (or several) have been introduced. Unfortunately, for HTML, CSS, PHP and JavaScript, a simple typo (the wrong bracket, a missing semi-colon, even uppercase text that should be lowercase), can produce an error that prevents a visitor from completing a purchase. "For want of a nail...".While fixing such an error may be beyond your expertise or that of your staff, there are tools that will help you find if you have such errors in your website. To learn more, read our details on website errors.