Public record
Software health reportschema 0.34.0 · metrics 2.10.0 · 2026-09-16 09:15 UTC

postcss / postcss

Transforming styles with JS plugins

TypeScript · JavaScriptMIT★ 28,973 stars⑂ 1,643 forkssince Sep 2013View on GitHub ↗
KindLibraryhow this is determined
#postcss#css#parser#ast#framework

postcss/postcss holds a health index of 34 out of 100, placing it in the At Risk band. It scores highest on Community & Adoption (95/100) and lowest on Security (47/100). It was last updated 8 days ago. A single contributor accounts for most of its recent work.

34
overall / 100
At Risk

Software health index

Metrics are grouped into weighted categories on one standardized 1–100 scale. Overall starts as their weighted mean, calibrated against the distribution of the public record so bands carry percentile meaning; when public evidence triggers the High-Risk Jurisdiction Policy, the rating is adjusted and receives an At Risk ceiling of 34.

34
Exceptional93-100The record's top tier (≈ top 5%); essentially all checked criteria met
Excellent80-92Strong across the board; minor gaps
Good65-79Healthy; gaps are limited and manageable
Moderate50-64Acceptable with notable gaps; review recommended
Weak35-49Material weaknesses across several areas
At Risk20-34Significant weaknesses; adoption warrants caution
Critical1-19Severe problems (abandoned, single-maintainer, no hygiene)
VitalityCommunity &AdoptionSustainability &GovernanceEngineeringQualitySecurityAI Readiness

Score profile

Each axis is a category. The shape matters more than the average — a healthy subject fills the whole shape, while a spike-and-crater profile means strength in one dimension is masking risk in another.

The weighted overall 78 is calibrated to 92 on the published index scale (record calibration 2026-08-02). High-Risk Jurisdiction Policy applies a 75% multiplier to weighted overall health and gives it an At Risk ceiling of 34.

Ownership

PostCSSOrganization · verified domain
428 followers57 public repossince Jul 2014

This repository is backed by an organization — shared, accountable stewardship that can outlive any single maintainer.

Package ecosystems

RegistryPackageVersionDownloads / moVersionsLast publishTags
npmpostcss8.5.281,050,818,20129212 days agocssmanipulationparserpostcsspreprocessorreworksource-maptransformtranspiler

Metrics by category

Vitality

Is the project alive — is code being written and are releases shipping?

84Excellent · 21% of overall

Development activity

73Good
How it's scored
28.8/36Push recency — last push 8 days ago
15.9/36Commit cadence — 23/52 weeks with commits
18/18Commit volume — 159 commits in the last year
10/10OpenSSF Scorecard: Maintained — 30 commit(s) and 16 issue activity found in the last 90 days -- score normalized to 10
Inputs used
commits_last_year159
human_commit_share1
days_since_last_push8
active_weeks_last_year23

Release discipline

100Exceptional
How it's scored
27/27Ships releases — 100 releases published
36/36Release recency — latest release 12 days ago
27/27Release cadence — a release every ~5.8 days
0/10OpenSSF Scorecard: Signed-Releases — no data
Inputs used
releases_count100
latest_release_tag8.5.28
releases_from_tagsno
days_since_latest_release12
mean_days_between_releases5.8
Excluded from scoring (no data or not applicable): OpenSSF Scorecard: Signed-Releases. Remaining weights renormalized.

Community & Adoption

Does the project have users, downloads, attention, and a welcoming setup for contributors?

95Exceptional · 17% of overall

Popularity & adoption

100Exceptional
How it's scored
60/60Stars — 28,973 stars
25/25Forks — 1,643 forks
15/15Watchers — 499 watchers
Inputs used
forks1,643
stars28,973
watchers499
growth_stateunverified
growth_factor_pct100
growth_unverified_reasonno_history

Community health

85Excellent
How it's scored
22.5/22.5README
22.5/22.5License — recognized license (MIT)
18/18CONTRIBUTING guide
13.5/13.5Code of conduct
0/7.2Issue template
0/6.3PR template
Inputs used
has_readmeyes
has_licenseyes
readme_badges0
has_contributingyes
has_issue_templateno
has_code_of_conductyes
readme_badge_services—
has_pull_request_templateno

Ecosystem adoption (downloads)

100Exceptional
How it's scored
80/80Monthly downloads — 1,050,818,201 downloads/month across npm
0/20Registry dependents — not reported by this ecosystem
Inputs used
packagespostcss
dependents—
ecosystemsnpm
total_downloads—
monthly_downloads1,050,818,201
unverified_packages_excluded—
Excluded from scoring (no data or not applicable): Registry dependents. Remaining weights renormalized.

Sustainability & Governance

Will the project survive its people — bus factor, responsiveness, who backs it, and package upkeep?

74Good · 23% of overall

Maintainer resilience (bus factor)

36Weak
How it's scored
9/54Bus factor — 1 contributor(s) cover half of all commits
3.8/22.5Commit distribution — top contributor authored 83% of commits
13.5/13.5Contributor breadth — 99 contributors
10/10OpenSSF Scorecard: Contributors — project has 87 contributing companies or organizations
Inputs used
bus_factor1
contributors_sampled99
top_contributor_share0.829

Issue & PR responsiveness

79Good
How it's scored
41.2/42Issue resolution — 98% of issues closed
24.4/30PR acceptance — 802/987 decided PRs merged
8.7/13Newcomer PR acceptance — 2/3 first-time contributors' PRs merged in 30d
4.5/15OpenSSF Scorecard: Code-Review — Found 11/30 approved changesets -- score normalized to 3
Inputs used
merged_prs802
open_issues19
closed_issues1,030
prs_merged_7d0
prs_decided_7d0
prs_merged_30d4
prs_decided_30d5
issue_closed_ratio0.982
closed_unmerged_prs185
first_time_authors_30d3
first_time_prs_merged_30d2
first_time_prs_decided_30d3

Ownership & stewardship

94Exceptional
How it's scored
30/30Ownership backing — organization-owned
20/20Verified domain
18.9/25Owner reach — 428 followers of postcss
24.8/25Track record — 57 public repos, account ~12 yr old
Inputs used
followers428
owner_typeOrganization
is_verifiedyes
owner_loginpostcss
public_repos57
account_age_days4,432

Package maintenance

100Exceptional
How it's scored
25/25Published & resolvable — 1 package(s) on npm
35/35Publish recency — latest publish 12 days ago
20/20Version history — 292 published versions
20/20Not deprecated — active, not deprecated or yanked
Inputs used
packagespostcss
ecosystemsnpm
any_deprecatedno
min_days_since_publish12

Engineering Quality

Are baseline engineering and documentation practices in place?

90Excellent · 19% of overall

Engineering practices

84Excellent
How it's scored
24/24CI workflows — 2 workflow(s)
24/24Tests present
16/16Linter config — eslint.config.mjs, package.json ("prettier")
0/9.6Pre-commit hooks
6.4/6.4.editorconfig
14/20OpenSSF Scorecard: CI-Tests — 9 out of 12 merged PRs checked by a CI test -- score normalized to 7
Inputs used
has_ciyes
has_testsyes
has_editorconfigyes
has_linter_configyes
has_precommit_configno

Documentation

100Exceptional
How it's scored
30/30README
25/25Documentation directory
15/15Documentation / homepage site — https://postcss.org
10/10Repository description
10/10Topics — 5 topics
10/10Wiki
Inputs used
topicspostcss, css, parser, ast, framework
has_wikiyes
homepagehttps://postcss.org
docs_sitehttps://postcss.org
has_readmeyes
has_docs_diryes
has_descriptionyes

Security

Are visible security and supply-chain practices strong, without unresolved high-risk jurisdiction exposure?

47Weak · 16% of overall

Security posture

34At Risk
How it's scored
7.5/7.5Binary-Artifacts — no binaries found in the repo
2.2/7.5Branch-Protection — branch protection is not maximal on development and all release branches
1.8/2.5CI-Tests — 9 out of 12 merged PRs checked by a CI test -- score normalized to 7
0/2.5CII-Best-Practices — no effort to earn an OpenSSF best practices badge detected
2.2/7.5Code-Review — Found 11/30 approved changesets -- score normalized to 3
2.5/2.5Contributors — project has 87 contributing companies or organizations
10/10Dangerous-Workflow — no dangerous workflow patterns detected
7.5/7.5Dependency-Update-Tool — update tool detected
5/5Fuzzing — project is fuzzed
2.5/2.5License — license file detected
7.5/7.5Maintained — 30 commit(s) and 16 issue activity found in the last 90 days -- score normalized to 10
0/5Packaging — no data
5/5Pinned-Dependencies — all dependencies are pinned
0/5SAST — SAST tool is not run on all commits -- score normalized to 0
5/5Security-Policy — security policy file detected
0/7.5Signed-Releases — no data
6.8/7.5Token-Permissions — detected GitHub workflow tokens with excessive permissions
7.5/7.5Vulnerabilities — 0 existing vulnerabilities detected
Inputs used
sourceopenssf_scorecard
checks_evaluated16
scorecard_versionv5.5.0
checks_inconclusive2
scorecard_aggregate7.9
high_risk_jurisdiction_cap34
high_risk_jurisdiction_multiplier75
security_posture_after_multiplier59
security_posture_before_jurisdiction79
Excluded from scoring (no data or not applicable): Packaging, Signed-Releases. Remaining weights renormalized. High-Risk Jurisdiction Policy applies a 75% multiplier and gives Security posture an At risk ceiling of 34.

Dependency advisories

100Exceptional
How it's scored
35/35Direct dependencies free of known advisories — no direct dependency carries a known advisory
25/25Indirect dependencies free of known advisories — no indirect dependency carries a known advisory
0/40No advisories left outstanding — no advisory carries a publication date
Inputs used
sourceosv
advisories0
affected_packages0
assessed_packages3
unassessed_packages0
affected_by_severitynone
direct_affected_packages0
Excluded from scoring (no data or not applicable): No advisories left outstanding. Remaining weights renormalized. Matched the npm:postcss@8.5.28 runtime dependency closure — what installing the published package pulls in — 3 packages. Reachability is not analyzed.

AI Readiness

How well is the repo equipped to be developed and maintained with AI coding agents? Carries a deliberately small weight (4%): agent tooling is a real maintenance signal, but a repository with none can still reach 100/100.

54Moderate · 4% of overall

Agent context & guidance

16Critical
How it's scored
0/45Agent instructions — no CLAUDE.md / AGENTS.md / editor rules
0/15Machine-readable docs (llms.txt)
16.5/40Legible commit history — 31 of 100 human commits state their intent (structured subject or explanatory body)
Inputs used
has_llms_txtno
llms_txt_url—
legible_history_share0.31
agent_instruction_files—
agent_instruction_max_bytes—

Verify loop (build / test / typecheck)

66Good
How it's scored
0/18One-command bootstrap
22/22Automated tests
11/11Lint / format config — eslint.config.mjs, package.json ("prettier")
11/11Static type checking — tsconfig.json
10/10Reproducible environment — lockfile
2/10Demonstrated agent practice — 1 of the last 100 commits agent-authored or agent-credited
0/8Automated maintenance — no automated dependency updates observed
10/10OpenSSF Scorecard: Pinned-Dependencies — all dependencies are pinned
Inputs used
has_nixno
has_testsyes
lockfilespnpm-lock.yaml
has_dockerfileno
typed_languageyes
bootstrap_files—
has_devcontainerno
has_linter_configyes
typecheck_configstsconfig.json
agent_commit_share0.01
toolchain_manifests—
dependency_bot_commit_share0

Code legibility for models

100Exceptional
How it's scored
45/45Type-checkable code — TypeScript (statically typed)
55/55Manageable file sizes — 0/85 source files over 60KB
Inputs used
primary_languageTypeScript
largest_source_bytes40,590
source_files_sampled85
oversized_source_files0

Key facts

28,973GitHub stars
99contributors
159commits, last 12 months
8days since last push
100releases
1bus factor
19open issues
npmpackage ecosystems

Data collection warnings

  • Star history unavailable: GitHub GraphQL error: Resource not accessible by personal access token

More detail

Star and fork history 0 ★ / 1,643 ⇿
0Stars
1,643Forks
100Releases

When each star and fork was added, collected from GitHub and bucketed by day. Cumulative growth sits directly above the daily additions it is made of, so the two read against each other: steady organic accretion looks nothing like an abrupt, short-lived burst. Where that difference is measurable, it is reported as growth authenticity.

Only the most recent history is shown — this repository exceeds the collection window, so the earliest history is not captured.

5007501,0001,2501,5001,7501,643242017-082022-032026-09
Major 0Minor 3Patch 97

Each point covers 9 days.

OpenSSF Scorecard 7.9 / 10
7.9aggregate

Independent, tool-agnostic security assessment from the open-source OpenSSF Scorecard. Each check rewards a security practice, not a specific vendor's tool. Checks Scorecard could not determine are marked n/a and excluded from the security score (never counted as zero).Scorecard v5.5.0 · 2026-09-16 09:15 UTC

10Binary-Artifactsno binaries found in the repo
3Branch-Protectionbranch protection is not maximal on development and all release branches
7CI-Tests9 out of 12 merged PRs checked by a CI test -- score normalized to 7
0CII-Best-Practicesno effort to earn an OpenSSF best practices badge detected
3Code-ReviewFound 11/30 approved changesets -- score normalized to 3
10Contributorsproject has 87 contributing companies or organizations
10Dangerous-Workflowno dangerous workflow patterns detected
10Dependency-Update-Toolupdate tool detected
10Fuzzingproject is fuzzed
10Licenselicense file detected
10Maintained30 commit(s) and 16 issue activity found in the last 90 days -- score normalized to 10
n/aPackagingpackaging workflow not detected
10Pinned-Dependenciesall dependencies are pinned
0SASTSAST tool is not run on all commits -- score normalized to 0
10Security-Policysecurity policy file detected
n/aSigned-Releasesno releases found
9Token-Permissionsdetected GitHub workflow tokens with excessive permissions
10Vulnerabilities0 existing vulnerabilities detected
Direct dependencies 3
RegistryPackageVersion constraintManifest
npmnanoid^3.3.18package.json
npmpicocolors^1.1.1package.json
npmsource-map-js^1.2.1package.json
All dependencies 333

Full resolved dependency set from the GitHub dependency graph: 5 direct and 328 indirect (transitive) packages. The transitive closure is complete when the repository commits a lockfile.

RegistryPackageVersionRelation
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npmhighlight.js11.12.0indirect
npmhtml-escaper2.0.2indirect
npmignore5.3.2indirect
npmignore7.0.8indirect
npmimport-fresh3.3.1indirect
npmimurmurhash0.1.4indirect
npmis-extglob2.1.1indirect
npmis-glob4.0.3indirect
npmis-number7.0.0indirect
npmisexe2.0.0indirect
npmistanbul-lib-coverage3.2.2indirect
npmistanbul-lib-report3.0.1indirect
npmistanbul-reports3.2.0indirect
npmjs-yaml4.3.2indirect
npmjson-buffer3.0.1indirect
npmjson-schema-traverse0.4.1indirect
npmjson-stable-stringify-without-jsonify1.0.1indirect
npmkeyv4.5.4indirect
npmkleur4.1.5indirect
npmlevn0.4.1indirect
npmlilconfig3.1.3indirect
npmlocate-path6.0.0indirect
npmlru-cache11.5.2indirect
npmmake-dir4.0.0indirect
npmmake-error1.3.6indirect
npmmarked18.0.11indirect
npmmerge21.4.1indirect
npmmicromatch4.0.8indirect
npmminimatch10.2.6indirect
npmminimatch3.1.5indirect
npmminipass7.1.3indirect
npmmri1.2.0indirect
npmms2.1.3indirect
npmmultiocular0.8.4indirect
npmnanodelay1.0.8indirect
npmnanoevents9.1.0indirect
npmnanospinner1.2.2indirect
npmnanospy2.0.2indirect
npmnanostores1.5.2indirect
npmnapi-postinstall0.3.4indirect
npmnatural-compare1.4.0indirect
npmnatural-orderby5.0.0indirect
npmnopt1.0.10indirect
npmoptionator0.9.4indirect
npmoxlint1.81.0indirect
npmoxlint-tsgolint7.0.2001indirect
npmp-limit3.1.0indirect
npmp-locate5.0.0indirect
npmparent-module1.0.1indirect
npmpath-exists4.0.0indirect
npmpath-key3.1.1indirect
npmpath-scurry2.0.2indirect
npmpicomatch2.3.2indirect
npmpicomatch4.0.7indirect
npmpostcss-parser-tests8.10.0indirect
npmprelude-ls1.2.1indirect
npmpunycode2.3.1indirect
npmqueue-microtask1.2.3indirect
npmrequireindex1.2.0indirect
npmresolve-from4.0.0indirect
npmresolve-pkg-maps1.0.0indirect
npmreusify1.1.0indirect
npmrun-parallel1.2.0indirect
npmsade1.8.1indirect
npmsemver7.8.5indirect
npmshebang-command2.0.0indirect
npmshebang-regex3.0.0indirect
npmsignal-exit4.1.0indirect
npmsimple-git-hooks2.14.0indirect
npmsize-limit13.0.3indirect
npmsource-map0.6.1indirect
npmstable-hash-x0.2.0indirect
npmstring-width7.2.0indirect
npmstring-width8.2.2indirect
npmstrip-ansi6.0.1indirect
npmstrip-ansi7.2.0indirect
npmstrip-json-comments3.1.1indirect
npmsupports-color7.2.0indirect
npmtapable2.3.3indirect
npmtest-exclude8.0.0indirect
npmtinyglobby0.2.17indirect
npmto-regex-range5.0.1indirect
npmts-api-utils2.5.0indirect
npmts-declaration-location1.0.7indirect
npmts-node10.9.2indirect
npmtslib2.8.1indirect
npmtype-check0.4.0indirect
npmtypescript5.9.3indirect
npmtypescript-eslint8.69.0indirect
npmundici-types8.3.0indirect
npmunist-util-stringify-position4.0.0indirect
npmunrs-resolver1.12.2indirect
npmuri-js4.4.1indirect
npmurl-pattern1.0.3indirect
npmuvu0.5.6indirect
npmv8-compile-cache-lib3.0.1indirect
npmv8-to-istanbul9.3.0indirect
npmvfile6.0.3indirect
npmvfile-location5.0.3indirect
npmvfile-message4.0.3indirect
npmwhich2.0.2indirect
npmword-wrap1.2.5indirect
npmwrap-ansi9.0.2indirect
npmws8.21.3indirect
npmy18n5.0.8indirect
npmyaml2.9.0indirect
npmyargs18.1.0indirect
npmyargs-parser21.1.1indirect
npmyargs-parser22.0.0indirect
npmyn3.1.1indirect
npmyocto-queue0.1.0indirect
Dependency advisories 0

Installing npm:postcss@8.5.28 pulls in 3 packages, direct and transitive: 0 carry known advisories, of which 0 are direct dependencies.

No known advisories affect the assessed dependencies.

An advisory means the version recorded in the dependency graph falls inside an advisory’s affected range. Reachability is not analysed, and the graph includes development and test pins — a finding may concern tooling rather than shipped software.

Raw JSON report machine-readable

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Scores are signals, not warranties. They reflect publicly visible practices on GitHub — not a code audit, and not a security guarantee.

Missing data is excluded and weights renormalized, never scored as zero. Methodology is versioned and open: metrics v2.10.0, schema v0.34.0 — full methodology · metrics wiki.

How one result sits in the wider record: aggregate statistics — npm.