Most Common Front-End Mistakes and How to Avoid Them

Most Common Front-End Mistakes and How to Avoid Them

When you visit any website, if it is user friendly and smooth with on point designs, Front-end developers are the ones you shall appreciate. However, with great appreciation, comes great challenges too. There are three main tools which are HTML5, CSS, and JavaScript. In summary, HTML is the one behind the logical structure of a website, CSS is the one which is the basis of page rendering and performance while JavaScript is the star behind interactive elements in a website. However, there are a lot of common mistakes which any front-end developer may commit given the complexity of their work. Let’s go through some of the very common ones.


A lot of times, during UX/UI design implementation, front-end developers try to religiously follow the design details. However, such is rendered impossible as some designs are not feasible enough. An example can be the different screen sizes do not match the design. What this does is that your website may look very random with elements not aligned in different places giving a very odd-looking website. A very quick way to solve this is to develop the website while keeping the designs insight. Besides, taking feedback from the designer is also important in order to find any tiny error in terms of outlook.


With over 3.5 billion population of the world being a smartphone user, it is imperative to realize the use of websites on mobile phones. So, if you are thinking that website responsiveness to mobile phones is not important, you are making your first mistake. However, even if working on responsiveness is decided, some frontend developers start working on it later when designs are implemented which leads to a lot of time consumption and testing. To solve this, consider writing CSS while considering responsiveness from the start.

Browser compatibility:

Oh, and how can we forget one of the most common issues, browser compatibility. Some frontend developers may tend to test on one kind of browser or only some of them. However, since all browsers render different pages differently, testing has to be done separately on every browser. Tools like CrossBrowserTesting, BrowserStack, and LambaTest are very helpful.


Syntax inconsistency in HTML may be a very common mistake done by frontend developers. With HTML5, a simpler but different syntax is present which includes void elements such as “br” or “input” which have replaced self-close tags. Thus, using self-close tags irregularly might pose a problem. Solution is simple, avoid self-close tags.

Image optimization:

Many developers commit the mistake to not optimize images that are to be placed on site. This may make your website lag and also takes a lot of your bandwidth. When placing images on site, there is no point to have pictures worth 10-20mbs. Just compress them and you will be good to go!
These are just some of the many common front-end mistakes any developer may do. The key is to keep a strong eye for such mistakes while also practicing with detail. Soon, with the solutions proposed, website life gets easier.

Leave a Reply

Your email address will not be published.