Sia Karamalegos, Freelance Web Developer

Freelance developer, international conference speaker, workshop instructor, and community organizer. I like to make the web fast.

Upcoming Talks and Workshops

Stay tuned for future talks!

All posts can be found on the blog page.

04 Aug 2021

What tools are web performance engineers using to measure site speed in 2021?

02 Aug 2021, updated 21 Jan 2022

Discover all JavaScript downloaded for a site and used vs unused in a handy data visualization.

21 Jul 2021

Start using AVIF today with Cloudinary. Learn about your options, the tradeoffs, and how to overcome slow transformations.

13 Jul 2021, updated 23 Jul 2021

Is Lighthouse telling you to eliminate render-blocking resources? Learn what it means and how to fix it.

24 May 2021

Want to get started with Eleventy but feel overwhelmed? Try out this pared-down tutorial

11 Dec 2020, updated 16 Jul 2021

Set up responsive images in Eleventy using Cloudinary and Eleventy shortcodes

15 May 2020

Setting and using data in the static site generator Eleventy

22 Nov 2019, updated 26 May 2021

Add Webmentions to your Eleventy static site with this step-by-step tutorial.

06 Feb 2019, updated 18 Jan 2022

If you use Google Fonts, a few additional steps can lead to much faster load times.