These days, people simply do not have patience for slow websites — the BBC found that it lost an additional 10% of users for every second its site took to load. And as we know, unhappy users equals lost revenue and diminished brand reputation. Also, today about half of web traffic worldwide comes from mobile devices, where pages inherently load slower. Luckily, there are many strategies to diagnose and resolve performance issues. On a recent internal project with Slalom Build, we made use of some handy tools to remove unused JavaScript and compress images, which significantly sped up our page loads.
Using Lighthouse to Identify Performance Issues
In order to understand the drivers of performance issues on our project, we used the Google Lighthouse performance scoring tool. When we ran the report, this was the initial result