The two things I care most about are practicality and outcomes. Fast websites are good, but they are not the end in themselves. What matters is what that speed unlocks: better experiences, **healthier conversion rates**, stronger Core Web Vitals, and more confidence in the product itself. I work with companies of all shapes and sizes, across a range of industries, countries, and team structures. Sometimes that means a **forensic performance audit**; sometimes it means help fixing a specific issue, training for engineers, or a longer-term partnership that helps a team build performance thinking into the way it works. All of that is squarely in my wheelhouse. If you need a faster website, better Core Web Vitals, a detailed performance audit, or simply a clearer understanding of where your **biggest opportunities** lie, I can help. I’m comfortable in the weeds with engineers, and just as comfortable helping stakeholders understand the **commercial side** of web performance work. If that sounds useful, [say hello](/contact/). I’m professional, but pretty laid back, and I’m always happy to see whether there’s a good fit. _There is a short list of people I whole-heartedly recommend for detailed performance work and Harry is right there at the top.
Tim Kadlec
_
Hire
me.
## Colophon
CSS Wizardry makes use of many great tools and services; tools and services that
make my life as a developer much, much simpler.
CSS Wizardry is built on [Jekyll](https://jekyllrb.com/), an open source static
site generator. This is hosted using [GitHub Pages](https://pages.github.com/)
and served via [Cloudflare](https://www.cloudflare.com/).
The CSS is written in [Sass](https://sass-lang.com/), and built on top of
[inuitcss](https://github.com/inuitcss). inuitcss is a free, open-source,
Sass-based, OOCSS framework with a strong focus on performance, scalability, and
a small footprint. This is then built into [ITCSS](https://skl.sh/harry), a CSS
architecture of mine which is designed to aid the growth and maintainability of
CSS projects.
The site is intentionally fairly lean. Your system font is used to give
a familiar feel and to help improve performance.
[SpeedCurve](https://speedcurve.com/) and [Treo](https://treo.sh/) help keep CSS
Wizardry _fast_.
The photograph used on the homepage’s masthead is of me speaking at [Digital
Labin](https://digital-labin.com/), and was taken by [Marin Cuk Vurnek of
EVENTography](https://www.facebook.com/mcveventography/).
CSS Wizardry’s roadmap and task list are viewable on [a public Trello
board](https://trello.com/b/5vYEHwrP/csswizardry-com), and all of the code that
powers it can be found [on
GitHub](https://github.com/csswizardry/csswizardry.github.com). Feel free to
take a look round, but please don’t steal anything.
---
## Why CSS Wizardry?
I chose the name CSS Wizardry when I was 17 years old. I had read [Andy
Budd](https://www.andybudd.com/)’s [CSS
Mastery](https://link.springer.com/book/10.1007/978-1-4302-0123-6),
become mildly obsessed, and then very unoriginally registered `csswizardry.com`.
I would not necessarily recommend letting teenagers pick their own domain
names.
While my early career really was rooted in CSS architecture and design
systems—and so for a long time the name made perfect sense—my work has been much
more squarely focused on web performance for the best part of a decade now. The
name has stuck, and at this point I suspect it probably always will.
---
## Interviews and Podcasts