Blog of marc radziwill.

I blog about JavaScript, tech stuff and freelancing.

Slow website and no clue why?

Get your free web performance checklist with personal feedback

Only until the end of July 2020!

Invest in your human capital and become a performance expert in only 7 modules.

What you get:

Web Performance Trends in 2020 you should keep an eye on

by Marc Radziwill | June 24, 2020 | 6 minutes to read

Categories: Webperformance

The Web Performance area is improving and has some awesome stuff to explore, but at the end of 2020, not all of our sites will be fast. Many tech people talk about 5G and HTTP/3, but there are much more new frameworks, tools and languages to explore. As always in web performance, you can not click…

Why you should care about Web Performance

by Marc Radziwill | June 22, 2020 | 3 minutes to read

Categories: Webperformance

If you find yourself caring about values like Bounce rate, Revenue, Time on site, page views, user satisfaction, online business success, you should care about web performance! Web Performance is not only a topic for nerds . Web Performance is about your business Web Performance is about the user…

My devcademy is online - get your free web performance checklist

by Marc Radziwill | June 18, 2020 | 3 minutes to read

What is devcademy? devcademy is a remote teaching workshop platform. I offer remote workshops for developers and development teams about web performance, web accessibility and JavaScript . What is the web performance checklist? Three things you get: My web performance checklist is a free tool to…

Introducing the Core Web Vitals for a healthy website

by Marc Radziwill | May 29, 2020 | 3 minutes to read

What are web vitals in why do we need them? Web vitals is an initiative introduced by Google. It helps us to understand the vitality of our website and to optimize the user experience. The Latter is a crucial indicator of long-term success. There are many tools for web performance experts…

My web performance experiment - a speed field trial

by Marc Radziwill | April 19, 2020 | 8 minutes to read

In my career as a web performance consultant and especially since I do performance workshops for companies and dev teams, I often recognize the same with performance problems. No matter how big the team or the project was, after some time, the application or website suddenly started being slower. I…

Mastering JavaScript high performance

by Marc Radziwill | March 12, 2020 | 9 minutes to read

Intro to JavaScript performance optimization JavaScript performance optimization techniques are simple to apply if you stick to some "rules" or better-said bits of advice. The implementation of these rules come with a minimum of understanding of how JavaScript engines work today. For the sake of…

svelte logo

How to use events in Svelte

by Marc Radziwill | January 20, 2020 | 2 minutes to read

Intro to Svelte events In my last article about Svelte, I talked about the advantages in general and how you can implement your first components, import them or display dynamic data. If you are new to Svelte, you should read my article "Why you should try Svelte" . Today we talk about the cosmos of…

svelte logo

Why you should try Svelte

by Marc Radziwill | January 15, 2020 | 5 minutes to read

I recently came across the new rising star again when I watched the stateofjs 2019 . They received the "Prediction Award" which means they are "awarded to an up-and-coming technology that might take over… or not?". I read about Svelte last year, but nothing caught me so that I forgot about it. But…

stay up to date!

Sign up for my free weekly newsletter and get exclusive tips & trends for web performance, JavaScript and my workshops.