lightningcss

An extremely fast CSS parser, transformer, bundler, and minifier written in Rust.

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7Distinct people

7Mentions

0Explicit recommenders

7.7KGitHub stars

REPOSITORY AT A GLANCE

What to know before exploring

What it is

An extremely fast CSS parser, transformer, bundler, and minifier written in Rust.

GitHub

Where it is used

No documented product use has been verified yet.

What people are saying

No recommendation phrase was found in the indexed comments.

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Also in these discussions

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This week on Hacker News

Nov 8–Nov 15 UTC · Direct repository links and separately labeled related project stories. Indexed through 11/15/2026, 11:34:28 AM UTC.

No direct repository links were found in the indexed HN discussions over the past seven days. Older discussions are available below.

Mentions over time

HN mentions by year7 dated mentions

Observed mentions: 2022-01-12 20:48:11 UTC to 2025-04-11 11:52:23 UTC.

Counts come from the repository’s dated source evidence. Index cutoff: 2026-11-02 08:16:59 UTC.

View mention counts and date ranges

UTC ranges include their start and exclude their end. Select a period to filter the source evidence.
Period	Start (UTC)	End (exclusive, UTC)	Mentions	Submissions	Comments
2022	2022-01-01 00:00:00 UTC	2023-01-01 00:00:00 UTC	2	1	1
2023	2023-01-01 00:00:00 UTC	2024-01-01 00:00:00 UTC	3	2	1
2024	2024-01-01 00:00:00 UTC	2025-01-01 00:00:00 UTC	1	0	1
2025	2025-01-01 00:00:00 UTC	2026-01-01 00:00:00 UTC	1	0	1

What Hacker News says

1 sources

chrismorgan·Apr 11, 2025

CSS Custom Properties have a cost. If you’re using them as global variables, and don’t need to look them up from JavaScript, or change them according to media queries, it’s good to flatten them out of existence: your bundle will be smaller, your execution faster, and your memory usage reduced. Same with mixins. It would be good if Lightning CSS supported that use case: https://github.com/parcel-bundler/lightningcss/issues/69. Compile-time variables are still a useful feature. CSS Custom Properties get used in a lot of places where compile-time variables would be better.

In Rusty Cascading Style Sheets – Another CSS Preprocessor