Project Wallace Blog

CSS Day 2026 was again full of excellent talks and Patrick Brosset’s talk about grid-lanes was no exception.

After weeks of scraping and analyzing more than 100,000 websites I’m happy to announce: The CSS Selection 2026!

One of the most common questions around analyzing CSS quality is how to detect unused CSS.

The last couple of months I’ve been working hard on improving how we can inspect what parts of CSS are used by the browser and which parts aren’t.

Over the years I have explored several ways to get hold of a website’s CSS.

CSS Naked Day is celebrated each year on 9 April.

‘Only’ 20 releases on the website this month but also lots of releases outside in our open source projects.

New features A light theme!

35 production releases this month, 4 less than last month.

39 production releases with performance improvements, bug fixes and a couple of new features.

January has been a very busy month with over 40+ PR’s merged to production and two new major features added.

It’s becoming sort of a tradition to look back on another year working on Project Wallace just as I did in 2022 and 2021.

Let’s say you’re writing a CSS pretty printer and you come across the / symbol: what do you do?

TL;DR: Project Wallace has it’s own CSS Minifier!

Just a short post to share my excitement that Project Wallace has been mentioned in public by some pretty cool people!

One of the most inspirational things lately is to watch at Adam Argyle’s side projects and see how he’s doing some really nerdy CSS work.

Imagine a conference completely dedicated to CSS.

Last year we introduced a prettifier to this website because it’s one of those things you often want to do when auditing CSS.

One of the main drivers for Project Wallace is performance.

Instagram.com ranks pretty high according to the Alexa top visited websites.

It’s been a pretty busy month with lots of fixes and new features.

My review of 2021 generated lots of encouraging comments.

It’s one of those common tasks that you do when auditing CSS: making minified CSS readable, to easily navigate it.

Years ago I read a blog post by Harry Roberts about Cyclomatic Complexity in CSS.

TL;DR: See your CSS Code Quality in numbers in a single glance on our Online CSS Code Quality Calculator Ever since I started Project Wallace years ago, I’ve been missing something.

First day of a new year!

With a few hours left before the end of the year I am happy to announce that @projectwallace/css-analyzer is now on version 5!

For more than a year I’ve been working behind the scenes on a complete rewrite of the CSS analyzer that powers all of Project Wallace.

With COVID-19 raging across our planet, sales for Project Wallace have pretty much dried up.

TLDR; Getting all CSS from a webpage requires a couple of different methods and some filtering.

The people at Chrome DevTools are joining the CSS Analytics game!

In the previous blog post I announced that Project Wallace now supports analysis of animation-duration and transition-duration.

Animations and transitions are becoming part of many design systems.

After using Project Wallace for quite some time, I found it hard sometimes to compare projects.

Integrating Constyble into your build process will help you automate complexity testing for CSS.

TLDR; there’s no tracking on Project Wallace.

On the 1st of January CSS-Tricks.com got a fresh coat of paint, and what a looker she is!

I love looking at the color-metric pages of projects and I found a pattern while browsing through a bunch of projects.

TLDR; Sorting colors in CSS is hard.

Woof!

When I was scrolling to some of my competitors’ websites, I noticed that analyze-css by Maciej Brencz was counting the amount of empty rules in your CSS.

As of today it is possible to install css-analyzer via NPM!

Here is some piece of CSS you’ve probably seen before: @font-face { font-family: 'MyCustomFont'; src: url('/path/to-font.woff2'); } .my-component { font-family: 'MyCustomFont'; } When it comes to analyzing CSS it is tempting to count that font-family…

So you start making a brand new CSS analyzer and you’re all fired up to get to work on it.

Today marks the point where a PHP library accepting incoming HTTP requests, parsing CSS into an Abstract Syntaxt Tree (AST) and analysing it into a hash of statistics was released on GitHub.

Today I released two libraries on GitHub that will ultimately power projectwallace.com!

Hi.