@PostCSS
Account based inSpain
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PostCSS is a tool to transform styles with JS plugins. By @sitnikcode and @evilmartians.
Joined November 2014
- Tweets4.8K
- Following67
- Followers9.1K
- Likes467
Pinned Tweet
PostCSS is one of the most popular front-end tools with 80M downloads/month.
Even if you don’t use it as a preprocessor, you still use it as a dependency in @Autoprefixer, @webpack or Create React App.
Now we are collecting funds to release PostCSS 8.0
opencollective.com/postcss/
PostCSS retweeted
I made a new PostCSS plugin for the new CSS `corner-shape: squircle`.
It creates smooth corners like in iOS (and nature). The plugin adjusts `border-radius` for squircle geometry and can add `corner-shape` automatically.
github.com/postcss/postcss-s…
Big news for PostCSS: CodeRabbit is sponsoring us with $500/month. This support lets us start preparing PostCSS 9.
We’ll also use their AI agent to review PRs and catch issues before merge.
Thank you, @coderabbitai, for supporting open source.
langflow. bun. ant-design. nuxt. vue. mermaid. pnpm. trpc.
Over 600,000 GitHub stars between them, and CodeRabbit reviews it all, for free.
Next stop: more than $10M into OSS over the next year, counted at what it costs us.
Heres the how and why 👇
coderabbit.ai/blog/coderabbi…
If you also want to support our work, we accept donations via opencollective.com/postcss or github.com/sponsors/ai/
PostCSS retweeted
We woke up to many new followers after the @rails and @AmandaBPerino announcement.
Let us introduce ourselves.
We're a design and engineering consultancy for devtools, AI, and cybersecurity startups, with a strong focus on Ruby and Rails. We authored and/or maintain 120+ open source tools, including @any_cable, Yabeda, Inertia Rails, TestProf, and @PostCSS.
And we're hosting the second edition of our annual Ruby conference in San Francisco this November 10–12. The first two days are for technical talks and networking sessions, and the third day is for fun community events. More info: sfruby.com
PostCSS retweeted
Popular npm packages Keyv and Cacheable were hijacked, and malicious versions containing a malware were released to steal users’ access tokens.
Protect your packages from the same fate with my guide, based on maintaining PostCSS and 100+ other projects:
evilmartians.com/chronicles/…
We recommends following this guide for all PostCSS plugins to protect ecosystem from supply chain attacks
My new article is out!
A systematic guide to releasing npm packages as safely as possible in 2026 (with a Skill to quickly apply the practices to your own open source projects).
Not just “do X”, I cover real attacks and explain how each defense helps.
evilmartians.com/chronicles/…
We updated our "Writing PostCSS plugin" guide to force protection against supply chain attack
postcss.org/docs/writing-a-p…
PostCSS retweeted
The unsung heroes of our time.
@43081j from the e18e.dev/ community cut 1 MB from caniuse-lite.
With 700M installs per month, that saves around 700 TB of global internet traffic every month.
github.com/browserslist/cani…
PostCSS retweeted
Here is my post where I share how to create a perfect README.md for your open source project (sharing what I learned creating PostCSS, etc)
evilmartians.com/chronicles/…
I met @andreysitnik (creator of PostCSS, autoprefixer, size-limit) at my first ever conference. His talk was "how to make your open source project popular".
Having a good README (beautiful and useful) is key.
Huge thanks to @atlas_cloud_ai for supporting our work with $100/month! 😍️
They are building a multimodal AI inference platform that gives developers a single API for video generation, image generation, and LLMs.
atlascloud.ai/?utm_source=tw…
You can also support PostCSS and our work around supply chain risks in open source by GitHub Sponsors
github.com/sponsors/ai/
PostCSS retweeted
Introducing the CSS Property Type Validator Stylelint plugin. @schalkneethling released the first beta that validates @property registrations, custom property assignments, and var() usage in your linting workflow. #css #tools
schalkneethling.com/posts/in…
ALT “Introducing the CSS Property Type Validator Stylelint Plugin” title with author photo, @property --brand-color with syntax: color, but used as background-image: var(--brand-color) on .card.
PostCSS retweeted
Celebrating my birthday today: 39.
If you’d like to support my work (npm supply chain attack research and trying to fix social media with Slow Reader), I’d be truly grateful for a GitHub Sponsors donation.
github.com/sponsors/ai/
PostCSS retweeted
Oh wow, @amplify just sent me $50 through GitHub Sponsors. Huge thanks!
Now I can get that screwdriver for the house that’s been sitting on my wishlist.
github.com/sponsors/ai/
PostCSS retweeted
Supply chain attacks can’t be solved with one silver bullet. They need a systemic approach.
For every dev layer (not just npm, but CI, Docker, and your editor) ask 4 questions:
1. How can we reduce dependencies?
2. Isolation
3. Update control
4. Review
Thread ↓
PostCSS retweeted
Hey! I am open for contract or full-time work as a full-stack developer.
I've worked on industrial software, real estate tech, and a visual website builder. I specialize in design systems, a11y, and UX.
Previously maintained PostCSS, Rollup, and SVGO.
PostCSS retweeted
Wow! Huge thanks to @elevenlabs for the $200/month sponsorship toward my work on open-source projects.
github.com/sponsors/ai/
PostCSS retweeted
Big contributor to my open source projects (like PostCSS) is look for job. Don’t miss it.
Hey! Looking for a full-stack job. Global remote. Contract or full-time.
I build design tools and contribute to popular open-source projects.
My CV: trysound.io/hire-me
DM or email me at [email protected]
PostCSS retweeted
CSSkit, a high-performance CSS toolchain written in Rust. Keith Cirkel’s project combines parsing, minification, linting, formatting, and LSP integration into one zero-config tool inspired by oxc. #css #tools
csskit.rs
ALT CSSkit logo surrounded by labels: Format, Lint, Transpile, Bundle, Minify, and Analyze.
RT @evilmartians: PostCSS powers 0.5% of ALL web pages but only earned $300/month for 13 years. This story is not unique.
Your app likely…
