Gathering detailed insights and metrics for postcss-csso
Gathering detailed insights and metrics for postcss-csso
Installations
npm install postcss-cssoDeveloper Guide
BETA
Typescript
No
Module System
ESM
Min. Node Version
^12.20.0 || ^14.13.0 || >=15.0.0
Node Version
18.7.0
NPM Version
8.15.0
Releases
12
Languages
1
JavaScript
JavaScript (100%)
Developer
lahmatiy
Download Statistics
Total Downloads
0
Last Day
0
Last Week
0
Last Month
0
Last Year
0
GitHub Statistics
MIT License
120 Stars
76 Commits
6 Forks
2 Watchers
3 Branches
3 Contributors
Updated on Jun 25, 2025
Maintainers
1
Package Meta Information
Latest Version
6.0.1
Package Id
postcss-csso@6.0.1
Unpacked Size
16.89 kB
Size
4.07 kB
File Count
9
NPM Version
8.15.0
Node Version
18.7.0
Total Downloads
Cumulative downloads
Total Downloads
NaN
Last Day
0%
NaN
Compared to previous day
Last Week
0%
NaN
Compared to previous week
Last Month
0%
NaN
Compared to previous month
Last Year
0%
NaN
Compared to previous year
Weekly Downloads
Monthly Downloads
Yearly Downloads
postcss-csso
PostCSS plugin to minify CSS using CSSO (a CSS minifier with structural optimizations).
Under the hood, the plugin converts PostCSS AST into CSSO's AST, optimises it and converts back. The plugin uses PostCSS's input AST nodes (or their clones) on back convertation, so the shape of the original PostCSS's nodes is preserved after the compression in most cases (e.g. properties added by other plugins aren't lost). This approach makes it possible to achieve great performance and correct source maps generation.
The performance of postcss-csso is approximately the same as CSSO has itself (see CSSO numbers in minifiers comparison table).
If you have any difficulties with the output of this plugin, please use the CSSO tracker.
Install
npm install postcss-csso
Usage
1import postcss from 'postcss'; 2import csso from 'postcss-csso'; 3// CommonJS: 4// const csso = require('postcss-csso'); 5 6postcss([ csso]) 7 .process('.a { color: #FF0000; } .b { color: rgba(255, 0, 0, 1) }') 8 .then((result) => { 9 console.log(result.css); 10 // .a,.b{color:red} 11 });
Plugin takes the same options as compress() method of CSSO with no exception.
1postcss([ 2 csso({ restructure: false }) 3]) 4 .process('.a { color: #FF0000; } .b { color: rgba(255, 0, 0, 1) }') 5 .then((result) => { 6 console.log(result.css); 7 // .a{color:red}.b{color:red} 8 });
Using in postcss.config.js:
1import csso from 'postcss-csso'; 2 3export const plugins = [ 4 csso({ 5 restructure: false 6 }) 7];
License
MIT
No vulnerabilities found.
Reason
no binaries found in the repo
Reason
no dangerous workflow patterns detected
Reason
license file detected
Details
- Info: project has a license file: LICENSE:0
- Info: FSF or OSI recognized license: MIT License: LICENSE:0
Reason
dependency not pinned by hash detected -- score normalized to 4
Details
- Warn: GitHub-owned GitHubAction not pinned by hash: .github/workflows/build.yml:16: update your workflow using https://app.stepsecurity.io/secureworkflow/lahmatiy/postcss-csso/build.yml/master?enable=pin
- Warn: GitHub-owned GitHubAction not pinned by hash: .github/workflows/build.yml:18: update your workflow using https://app.stepsecurity.io/secureworkflow/lahmatiy/postcss-csso/build.yml/master?enable=pin
- Warn: GitHub-owned GitHubAction not pinned by hash: .github/workflows/build.yml:38: update your workflow using https://app.stepsecurity.io/secureworkflow/lahmatiy/postcss-csso/build.yml/master?enable=pin
- Warn: GitHub-owned GitHubAction not pinned by hash: .github/workflows/build.yml:40: update your workflow using https://app.stepsecurity.io/secureworkflow/lahmatiy/postcss-csso/build.yml/master?enable=pin
- Warn: third-party GitHubAction not pinned by hash: .github/workflows/build.yml:52: update your workflow using https://app.stepsecurity.io/secureworkflow/lahmatiy/postcss-csso/build.yml/master?enable=pin
- Warn: third-party GitHubAction not pinned by hash: .github/workflows/build.yml:64: update your workflow using https://app.stepsecurity.io/secureworkflow/lahmatiy/postcss-csso/build.yml/master?enable=pin
- Info: 0 out of 4 GitHub-owned GitHubAction dependencies pinned
- Info: 0 out of 2 third-party GitHubAction dependencies pinned
- Info: 2 out of 2 npmCommand dependencies pinned
Reason
Found 1/26 approved changesets -- score normalized to 0
Reason
0 commit(s) and 0 issue activity found in the last 90 days -- score normalized to 0
Reason
no effort to earn an OpenSSF best practices badge detected
Reason
detected GitHub workflow tokens with excessive permissions
Details
- Warn: no topLevel permission defined: .github/workflows/build.yml:1
- Info: no jobLevel write permissions found
Reason
security policy file not detected
Details
- Warn: no security policy file detected
- Warn: no security file to analyze
- Warn: no security file to analyze
- Warn: no security file to analyze
Reason
project is not fuzzed
Details
- Warn: no fuzzer integrations found
Reason
branch protection not enabled on development/release branches
Details
- Warn: branch protection not enabled for branch 'master'
Reason
SAST tool is not run on all commits -- score normalized to 0
Details
- Warn: 0 commits out of 5 are checked with a SAST tool
Reason
10 existing vulnerabilities detected
Details
- Warn: Project is vulnerable to: GHSA-v6h2-p8h4-qcjw
- Warn: Project is vulnerable to: GHSA-grv7-fg5c-xmjg
- Warn: Project is vulnerable to: GHSA-3xgq-45jj-v275
- Warn: Project is vulnerable to: GHSA-f8q6-p94x-37v3
- Warn: Project is vulnerable to: GHSA-mwcw-c2x4-8c55
- Warn: Project is vulnerable to: GHSA-7fh5-64p2-3v2j
- Warn: Project is vulnerable to: GHSA-gcx4-mw62-g8wm
- Warn: Project is vulnerable to: GHSA-c2qf-rxjj-qqgw
- Warn: Project is vulnerable to: GHSA-76p7-773f-r4q5
- Warn: Project is vulnerable to: GHSA-j8xg-fqg3-53r7
Score
2.8
/10
Last Scanned on 2025-07-07
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