Epic Website Development Mistakes to Avoid in 2013 and Beyond

Website development in 2013 came with its share of avoidable pitfalls, from messy, non-semantic HTML and bloated CSS to fragile, poorly structured JavaScript. Small oversights early in a build have a habit of compounding into slow load times, cross-browser bugs, and code that’s painful to maintain later on.

The infographic below rounds up the most common website development mistakes we saw that year, spanning HTML, CSS, and JavaScript, along with the simple habits that help you code better and steer clear of them on every project going forward.

Clean markup, disciplined stylesheets, and well-organized scripts aren’t just good form; they’re what keep a site fast, accessible, and easy to extend as it grows. Treat the checklist above as a quick gut-check before your next website goes live.