#lightningcss
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vite.dev
Built with Vite and LightningCSS 💙
cheeaun.com Chee Aun 🤔 @cheeaun.com · Dec 26
Oh well, introducing Swablu, my yet another hard-to-pronounce web client, this time for Bsky.

Note that this is very early, experimental and buggy. Feel free to play around https://swablu.pages.dev/ and look at the code https://github.com/cheeaun/swablu
cheeaun.com Chee Aun 🤔 @cheeaun.com · Dec 12
Been working on this for the past few days. Very experimental, early, buggy, and NOT complete.

1️⃣ One small sneak peek for now.

For those who don't know me, I created Phanpy (web client for Mastodon) that has *a lot* of these kind of UI ideas & experiments. This allows me to experiment more.
December 26, 2024 at 3:40 PM
arnaud-barre.bsky.social
Do you know any modern bundler that doesn't use LightningCSS? Except esbuild I think everyone is now using LightningCSS as a core dependency (or ported its source code 👀) and that's why I nominated LightningCSS for the @syntax.fm OSS fund!

syntax.fm/oss
$50,000 for Open Source - Syntax
Syntax is Pledging $50,000 to open source projects.
syntax.fm
November 9, 2024 at 6:53 PM
vite.dev
Vite 6.3 is out! ⚡️
- preprocessor support with LightningCSS
- FetchableDevEnvironment interface
- filter option on hooks, enabling faster plugins with rolldown-vite. Stay tuned for more news soon!

Check the complete changelog at
github.com
April 16, 2025 at 8:20 AM
devongovett.me
Lol it did port the code back to rust and now it looks very similar to lightningcss 😅
May 18, 2026 at 3:21 PM
devongovett.me
Released Lightning CSS v1.28! ⚡️

• Option to skip hashing container names in CSS modules
• Fixed bugs with calc() minification
• Fixed ordering issue for size properties with fallback values
• Improved error messages for selectors and CSS modules

https://github.com/parcel-bundler/lightningcss/rel…
Release v1.28.0 · parcel-bundler/lightningcss
Added Add option to avoid hashing @container names in CSS Modules by @kdy1 in #835 Improve error message of input:placeholder by @kdy1 in #813 Add an error for the deprecated @value at-rule of CSS...
buff.ly
November 3, 2024 at 11:02 PM
devongovett.me
Finally had time to write up some thoughts on what I need help with and the project philosophy: github.com/parcel-bundl...
Improving lightningcss maintenance - please help! · parcel-bundler lightningcss · Discussion #1241
Lightning CSS usage has skyrocketed in the last year. It is now used in almost every major modern build tool, including Next.js, Vite, Rspack, Tailwind, Parcel, Bun (a port), etc. npm downloads hav...
github.com
May 17, 2026 at 10:14 PM
rspack.dev
Our team member contributed to browserslist-rs, making data static to reduce memory usage and binary size.

This benefits all dependent tools like Rspack, SWC, Turbopack, and LightningCSS. Rspack's binary size was reduced by 1.64MB. 🚀
July 3, 2025 at 8:02 AM
silvenon.com
Nice. I hope LightningCSS has something as well, at least on the horizon.
September 23, 2026 at 5:48 PM
heather-buchel.com
Tinkering with some CSS stuff (which is greatly helping my brain to chill out) and this post from @5t3ph.bsky.social for adding LightningCSS to @11ty.dev has been very helpful after I moved a bunch of stuff around in my v2 -> v3 upgrade.

11ty.rocks/posts/proces...
Process CSS or Sass With LightningCSS | 11ty Rocks!
Use these plugins or code snippets to make CSS a first-class templating language in Eleventy and add processing with LightningCSS and/or Sass.
11ty.rocks
November 7, 2024 at 3:56 AM
devongovett.me
Just released Lightning CSS v1.29! ⚡️

• Support for View Transitions Level 2 rules, properties, and selectors, with css module scoping
• @font-feature-values support
• Flag to enable/disable transpiling light-dark()
• Better media query range compilation
• ...and more!

github.com/parcel-bundl...
Release v1.29.0 · parcel-bundler/lightningcss
Added Implement view transitions level 2, including the @view-transition rule, view-transition-class and view-transition-group properties, and class selector features of the view transition pseud...
github.com
January 9, 2025 at 6:01 AM
hejchristian.com
Same. The only thing I've been using now is LightningCSS, though I think I'll even reevaluate if I need that when it comes time for me to update my 11ty starter :)
September 17, 2026 at 2:24 PM
lixeletto.bsky.social
10 - Você não precisa se perguntar sobre compatibilidade de propriedades CSS se essa propriedade tá 'evergreen' e sem flags

Se vc se preocupa com seus clientes, vc devia processar seu CSS (prefixes e polyfills)
PostCSS e lightningCSS são ótimos
September 11, 2024 at 9:22 PM
rusttrending.bsky.social
parcel-bundler / lightningcss: An extremely fast CSS parser, transformer, bundler, and minifier written in Rust. ★6996 https://github.com/parcel-bundler/lightningcss
parcel-bundler / lightningcss
An extremely fast CSS parser, transformer, bundler, and minifier written in Rust.
github.com
May 12, 2025 at 12:54 PM
maxinethemooshroom.bsky.social
So this is pretty crazy (crest is a custom css parser I've been working on)
#rustlang #rust-lang #software #peacock-rs
A screenshot of a terminal displaying performance benchmarks of lightningcss and crest
December 14, 2024 at 8:10 AM
nmn.sh
It’s not a standard so probably not.

It has barely moved past the proposal stage.

Just use LightningCSS or something, it’s not a new capability.
March 19, 2025 at 5:35 AM
yug1224.com
Rust製のCSSツールらしく、パースや圧縮がとても速いっぽい。大規模なCSSのビルド時間短縮やファイルサイズ削減に貢献するかも。

yug1224 starred parcel-bundler/lightningcss
https://github.com/parcel-bundler/lightningcss
GitHub - parcel-bundler/lightningcss: An extremely fast CSS parser, transformer, bundler, and minifier written in Rust.
github.com
May 19, 2025 at 10:39 AM
11ty.dev
Maintainence task: our docs on 11ty.dev have moved from clean-css to LightningCSS — excited to make use of CSS nesting!

lightningcss.dev
Eleventy is a simpler static site generator
Eleventy is a simpler static site generator.
11ty.dev
June 26, 2026 at 6:47 PM
sebin-nyshkim.net
I just wanted to add LightningCSS to my blog and suddenly I'm falling off the deep end of learning how bundling in 11ty works and refactoring the entire architecture of the whole thing in the process until 5am

My ADHD is going ballistic on me, dude 😵
August 27, 2026 at 11:48 AM
veneman.dev
Wouldn't it be cool if CSS minifiers would create a custom property for the data-url and then reuse that instead of inline the big data-url in the result twice?

lightningcss.dev/playground/i...
Lightningcss playground. Two panels: input and output. Input panel shows a single ruleset with one selector and one declaration for `mask-image` with a value of some data-url. The output panel shows one rule with two declarations: two times mask-image, one of them vendor prefixed. Both of the declarations have the full data-url embedded. The output fills the entire picture.
July 20, 2026 at 5:59 PM
veneman.dev
Gave this a shot for @projectwallace.com:

- 🚂 Svelte kit build time: 9.1s -> 5.3s
- ⚠️ Build warnings: 0 -> lots, because lightningcss doesn't know `::highlight(AtRule)`
- 💾 Page bundle download size: identical
- ❌ 1 page erroring completely, seemingly because of css-tree imports somewhere on my end
Build warnings from lightningcss, most of which say: "'highlight' is not recognized as a valid pseudo-element. Did you mean ':highlight' (pseudo-class) or is this a typo?" A big fat "500 Internal error" showing on the Project Wallace website
November 10, 2025 at 10:36 PM
brocksinet.bsky.social
A short blog post about how to transform a DashedIdent with LightningCSS 😃

#css #lightningcss #javascript

www.brocksi.net/blog/lightni...
LightningCSS - How to Transform a DashedIdent value?
Sometimes I have very stupid ideas. People usually laugh at first, but I've learned that there's truth in every stupid idea. So, my latest dumb idea was to turn CSS into CSS! Sounds great, I know. If ...
www.brocksi.net
September 16, 2024 at 9:42 AM
consciousness-dev.bsky.social
And Suddenly...

#tailwind #lightningcss
July 13, 2025 at 4:38 PM
lixeletto.bsky.social
Foda que a galera se apega muito a compatibilidade sendo que qualquer aplicação mais seria hj processa o CSS com postCSS ou lightningCSS
January 7, 2025 at 12:18 AM
jacobb.nyc
Calling it now, Deno’s Rust FFI is THE killer feature long-term.

The potential of embedding rust libs like LightningCSS, Rolldown, or Rapier directly in the runtime is unmatched.
deno.land Deno @deno.land · Jan 29
Deno's fully featured, zero-overhead FFI is stable
January 29, 2025 at 7:33 PM
jbhutch.bsky.social
Unbarrelify got me thinking... I know of a library that uses multiple chained imports, not unlike barrel files.

Turns out, my importing directly from the source, I was able to cut USWDS SCSS compile time in half!

All that, and more:
github.com/uswds/uswds/...
February 15, 2026 at 5:09 PM