Slow input response and User Experience – Demo

In May 2019 I talked about monitoring Magento front-end performance at 2 local Magento meetups. First event was in Munich and second in Vienna. During Vienna’s talk I presented about 40% new content and part of the new ideas came from a feedback I got from Munich’s attendees. They shared with me that some of …

Web Performance Metrics – Demos

I decided to create notes and demos about web performance metrics that sometimes I have problem to explain and understand. First input delay: First Input Delay (FID) measures the time from when a user first interacts with your site to the time when the browser is actually able to respond to that interaction. Source: https://developers.google.com/web/updates/2018/05/first-input-delay I …

Render-blocking JavaScript in Magento 1 RWD theme

In the past few months I started researching the possibilities to optimize the front-end performance of the Magento 1.x RWD theme. I found 3 very basic and important solutions that, once implemented, bring a lot of value. I worked on eliminating render-blocking JavaScript, eliminating render-blocking CSS, and showing product list images in a smarter way. I’ve also …

Prerender example in Magento

Recently I began experimenting with prerender resource hints. This new feature allows you to “tell” the browser to load a page in the background and instantly show this page the when user decides to visit it. It’s currently a W3C Working draft https://www.w3.org/TR/resource-hints/#prerender. It’s pretty easy to implement prerender and the good news is that …