Public record
Software health reportschema 0.30.0 · metrics 2.10.0 · 2026-08-04 17:52 UTC

inikulin / parse5

HTML parsing/serialization toolset for Node.js. WHATWG HTML Living Standard (aka HTML5)-compliant.

TypeScriptMIT★ 3,918 stars⑂ 255 forkssince Mar 2013View on GitHub ↗
KindLibraryhow this is determined
#html-parsing#html#html5#serialization#serializer#parser#whatwg

inikulin/parse5 holds a health index of 94 out of 100, placing it in the Exceptional band. It scores highest on Vitality (90/100) and lowest on AI Readiness (52/100). It was last updated 1 day ago. A single contributor accounts for most of its recent work.

94
overall / 100
Exceptional

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.

94
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 80 is calibrated to 94 on the published index scale (record calibration 2026-08-02).

Ownership

Ivan NikulinPersonal account
331 followers96 public repossince Oct 2010@Cloudflare

This repository is owned by a personal account. A single-owner project carries more continuity risk than an organization-backed one.

Package ecosystems

RegistryPackageVersionDownloads / moVersionsLast publishTags
npmparse58.0.1567,792,78761106 days agohtmlparserhtml5whatwgspecificationfasthtml-parserhtml5-parserhtmlparserparse5serializerhtml-serializerhtmlserializerparseserialize
npmparse5-sax-parser8.0.019,738,3267390 days agoparse5parserstreamstreamingsax
npmparse5-parser-stream8.0.070,617,5348390 days agoparse5parserstreamstreaming
npmparse5-html-rewriting-stream8.0.119,126,8619106 days agoparse5parserstreamstreamingrewritterrewritehtml
npmparse5-htmlparser2-tree-adapter8.0.1124,379,8399106 days agoparse5parsertree-adapterhtmlparser2
npmparse5-plain-text-conversion-stream8.0.0567390 days agoparse5parserstreamstreamingplaintextplain-text

Metrics by category

Vitality

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

90Excellent · 21% of overall

Development activity

100Exceptional
How it's scored
36/36Push recency — last push 1 days ago
36/36Commit cadence — 52/52 weeks with commits
18/18Commit volume — 236 commits in the last year
10/10OpenSSF Scorecard: Maintained — 30 commit(s) and 1 issue activity found in the last 90 days -- score normalized to 10
Inputs used
commits_last_year236
human_commit_share0.07
days_since_last_push1
active_weeks_last_year52

Release discipline

74Good
How it's scored
27/27Ships releases — 51 releases published
27/36Release recency — latest release 106 days ago
12.6/27Release cadence — a release every ~173.7 days
0/10OpenSSF Scorecard: Signed-Releases — no data
Inputs used
releases_count51
latest_release_tagv8.0.1
releases_from_tagsno
days_since_latest_release106
mean_days_between_releases173.7
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?

77Good · 17% of overall

Popularity & adoption

87Excellent
How it's scored
58.3/60Stars — 3,918 stars
20/25Forks — 255 forks
8.8/15Watchers — 40 watchers
Inputs used
forks255
stars3,918
watchers40
growth_stateunverified
growth_factor_pct100
growth_unverified_reasonno_history

Community health

50Moderate
How it's scored
22.5/22.5README
22.5/22.5License — recognized license (MIT)
0/18CONTRIBUTING guide
0/13.5Code of conduct
0/7.2Issue template
0/6.3PR template
Inputs used
has_readmeyes
has_licenseyes
readme_badges5
has_contributingno
has_issue_templateno
has_code_of_conductno
readme_badge_servicesgithub.com, shields.io
has_pull_request_templateno

Ecosystem adoption (downloads)

100Exceptional
How it's scored
80/80Monthly downloads — 801,655,403 downloads/month across npm
0/20Registry dependents — not reported by this ecosystem
Inputs used
packagesparse5, parse5-sax-parser, parse5-parser-stream, parse5-html-rewriting-stream, parse5-htmlparser2-tree-adapter, parse5-plain-text-conversion-stream
dependents—
ecosystemsnpm
total_downloads—
monthly_downloads801,655,403
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?

70Good · 23% of overall

Maintainer resilience (bus factor)

38Weak
How it's scored
9/54Bus factor — 1 contributor(s) cover half of all commits
5.8/22.5Commit distribution — top contributor authored 74% of commits
13.5/13.5Contributor breadth — 36 contributors
10/10OpenSSF Scorecard: Contributors — project has 37 contributing companies or organizations
Inputs used
bus_factor1
contributors_sampled36
top_contributor_share0.741

Issue & PR responsiveness

90Excellent
How it's scored
38.6/42Issue resolution — 92% of issues closed
26.4/30PR acceptance — 1,289/1,463 decided PRs merged
0/13Newcomer PR acceptance — no first-time contributor's PR decided in 30d
0/15OpenSSF Scorecard: Code-Review — no data
Inputs used
merged_prs1,289
open_issues28
closed_issues317
prs_merged_7d0
prs_decided_7d0
prs_merged_30d0
prs_decided_30d0
issue_closed_ratio0.919
closed_unmerged_prs174
first_time_authors_30d0
first_time_prs_merged_30d0
first_time_prs_decided_30d0
Excluded from scoring (no data or not applicable): Newcomer PR acceptance, OpenSSF Scorecard: Code-Review. Remaining weights renormalized.

Ownership & stewardship

66Good
How it's scored
10/30Ownership backing — personal (user) account
0/20Verified domain — not applicable to user accounts
18.1/25Owner reach — 331 followers of inikulin
25/25Track record — 96 public repos, account ~15 yr old
Inputs used
followers331
owner_typeUser
is_verified—
owner_logininikulin
public_repos96
account_age_days5,762
Excluded from scoring (no data or not applicable): Verified domain. Remaining weights renormalized.

Package maintenance

100Exceptional
How it's scored
25/25Published & resolvable — 6 package(s) on npm
35/35Publish recency — latest publish 106 days ago
20/20Version history — 61 published versions
20/20Not deprecated — active, not deprecated or yanked
Inputs used
packagesparse5, parse5-sax-parser, parse5-parser-stream, parse5-html-rewriting-stream, parse5-htmlparser2-tree-adapter, parse5-plain-text-conversion-stream
ecosystemsnpm
any_deprecatedno
min_days_since_publish106

Engineering Quality

Are baseline engineering and documentation practices in place?

88Excellent · 19% of overall

Engineering practices

90Excellent
How it's scored
24/24CI workflows — 4 workflow(s)
24/24Tests present
16/16Linter config — .eslintrc.json, eslint.config.js
0/9.6Pre-commit hooks
6.4/6.4.editorconfig
20/20OpenSSF Scorecard: CI-Tests — 30 out of 30 merged PRs checked by a CI test -- score normalized to 10
Inputs used
has_ciyes
has_testsyes
has_editorconfigyes
has_linter_configyes
has_precommit_configno

Documentation

85Excellent
How it's scored
30/30README
25/25Documentation directory
0/15Documentation / homepage site
10/10Repository description
10/10Topics — 7 topics
10/10Wiki
Inputs used
topicshtml-parsing, html, html5, serialization, serializer, parser, whatwg
has_wikiyes
homepage—
docs_site—
has_readmeyes
has_docs_diryes
has_descriptionyes

Security

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

82Excellent · 16% of overall

Security posture

78Good
How it's scored
7.5/7.5Binary-Artifacts — no binaries found in the repo
0/7.5Branch-Protection — no data
2.5/2.5CI-Tests — 30 out of 30 merged PRs checked by a CI test -- score normalized to 10
0/2.5CII-Best-Practices — no effort to earn an OpenSSF best practices badge detected
0/7.5Code-Review — no data
2.5/2.5Contributors — project has 37 contributing companies or organizations
10/10Dangerous-Workflow — no dangerous workflow patterns detected
7.5/7.5Dependency-Update-Tool — update tool detected
0/5Fuzzing — project is not fuzzed
2.5/2.5License — license file detected
7.5/7.5Maintained — 30 commit(s) and 1 issue activity found in the last 90 days -- score normalized to 10
0/5Packaging — no data
5/5Pinned-Dependencies — all dependencies are pinned
5/5SAST — SAST tool is run on all commits
5/5Security-Policy — security policy file detected
0/7.5Signed-Releases — no data
0/7.5Token-Permissions — detected GitHub workflow tokens with excessive permissions
5.2/7.5Vulnerabilities — 3 existing vulnerabilities detected
Inputs used
sourceopenssf_scorecard
checks_evaluated14
scorecard_versionv5.5.0
checks_inconclusive4
scorecard_aggregate7.8
Excluded from scoring (no data or not applicable): Branch-Protection, Code-Review, Packaging, Signed-Releases. Remaining weights renormalized.

Dependency advisories

100Exceptional
How it's scored
35/35Direct dependencies free of known advisories — no direct dependency carries a known advisory
0/25Indirect dependencies free of known advisories — transitive set not separable from development and test dependencies in this scope
0/40No advisories left outstanding — no advisory carries a publication date
Inputs used
sourceosv
advisories3
affected_packages2
assessed_packages255
unassessed_packages7
affected_by_severityhigh 1, moderate 1
direct_affected_packages0
Excluded from scoring (no data or not applicable): Indirect dependencies free of known advisories, No advisories left outstanding. Remaining weights renormalized. Matched 255 resolved dependencies against OSV. 7 could not be assessed — no resolved version, an unsupported ecosystem, or beyond the reported package list. This repository publishes no package the index resolves, so the repository dependency graph was assessed instead. That graph mixes development and test pins with shipped dependencies, so only the declared runtime dependencies are scored; transitive findings are reported as context and excluded from the score. 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.

52Moderate · 4% of overall

Agent context & guidance

1Critical
How it's scored
0/45Agent instructions — no CLAUDE.md / AGENTS.md / editor rules
0/15Machine-readable docs (llms.txt)
0/40Legible commit history — no data
Inputs used
has_llms_txtno
llms_txt_url—
legible_history_share—
agent_instruction_files—
agent_instruction_max_bytes—
Excluded from scoring (no data or not applicable): Legible commit history. Remaining weights renormalized.

Verify loop (build / test / typecheck)

72Good
How it's scored
0/18One-command bootstrap
22/22Automated tests
11/11Lint / format config — .eslintrc.json, eslint.config.js
11/11Static type checking — packages/parse5-html-rewriting-stream/tsconfig.json, packages/parse5-htmlparser2-tree-adapter/tsconfig.json, packages/parse5-parser-stream/tsconfig.json, packages/parse5-plain-text-conversion-stream/tsconfig.json, packages/parse5-sax-parser/tsconfig.json, packages/parse5/tsconfig.json, test/tsconfig.json, tsconfig.json
10/10Reproducible environment — lockfile
0/10Demonstrated agent practice — no agent-authored commits among the last 100
8/8Automated maintenance — 93 of the last 100 commits are automated dependency updates
10/10OpenSSF Scorecard: Pinned-Dependencies — all dependencies are pinned
Inputs used
has_nixno
has_testsyes
lockfilespackage-lock.json
has_dockerfileno
typed_languageyes
bootstrap_files—
has_devcontainerno
has_linter_configyes
typecheck_configspackages/parse5-html-rewriting-stream/tsconfig.json, packages/parse5-htmlparser2-tree-adapter/tsconfig.json, packages/parse5-parser-stream/tsconfig.json, packages/parse5-plain-text-conversion-stream/tsconfig.json, packages/parse5-sax-parser/tsconfig.json, packages/parse5/tsconfig.json, test/tsconfig.json, tsconfig.json
agent_commit_share0
toolchain_manifests—
dependency_bot_commit_share0.93

Code legibility for models

98Exceptional
How it's scored
45/45Type-checkable code — TypeScript (statically typed)
52.9/55Manageable file sizes — 2/52 source files over 60KB
Inputs used
primary_languageTypeScript
largest_source_bytes116,705
source_files_sampled52
oversized_source_files2

Key facts

3,918GitHub stars
36contributors
236commits, last 12 months
1days since last push
51releases
1bus factor
28open issues
npmpackage ecosystems

Data collection warnings

  • Star history unavailable: GitHub GraphQL error: Resource not accessible by personal access token
  • Could not fetch npm package 'parse5-benchmarks' from its registry
  • deps.dev does not index npm:parse5@8.0.1; advisories assessed against the repository dependency graph instead

More detail

Star and fork history 0 ★ / 255 ⇿
0Stars
255Forks
50Releases

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.

05010015020025024652013-092020-022026-07
Major 7Minor 10Patch 33

Each point covers 12 days.

OpenSSF Scorecard 7.8 / 10
7.8aggregate

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 · 2026-08-04 17:52 UTC

10Binary-Artifactsno binaries found in the repo
n/aBranch-Protectioninternal error: error during branchesHandler.setup: internal error: some github tokens can't read classic branch protection rules: https://github.com/ossf/scorecard-action/blob/main/docs/authentication/fine-grained-auth-token.md
10CI-Tests30 out of 30 merged PRs checked by a CI test -- score normalized to 10
0CII-Best-Practicesno effort to earn an OpenSSF best practices badge detected
n/aCode-ReviewFound no human activity in the last 30 changesets
10Contributorsproject has 37 contributing companies or organizations
10Dangerous-Workflowno dangerous workflow patterns detected
10Dependency-Update-Toolupdate tool detected
0Fuzzingproject is not fuzzed
10Licenselicense file detected
10Maintained30 commit(s) and 1 issue activity found in the last 90 days -- score normalized to 10
n/aPackagingpackaging workflow not detected
10Pinned-Dependenciesall dependencies are pinned
10SASTSAST tool is run on all commits
10Security-Policysecurity policy file detected
n/aSigned-Releasesno releases found
0Token-Permissionsdetected GitHub workflow tokens with excessive permissions
7Vulnerabilities3 existing vulnerabilities detected
Direct dependencies 13
RegistryPackageVersion constraintManifest
npmbenchmark^2.1.4bench/package.json
npmhuman-format^1.2.1bench/package.json
npmparse5npm:parse5bench/package.json
npmentities^8.0.0packages/parse5-html-rewriting-stream/package.json
npmparse5^8.0.0packages/parse5-html-rewriting-stream/package.json
npmparse5-sax-parser^8.0.0packages/parse5-html-rewriting-stream/package.json
npmdomhandler^6.0.1packages/parse5-htmlparser2-tree-adapter/package.json
npmparse5^8.0.0packages/parse5-htmlparser2-tree-adapter/package.json
npmparse5^8.0.0packages/parse5-parser-stream/package.json
npmparse5^8.0.0packages/parse5-plain-text-conversion-stream/package.json
npmparse5-parser-stream^8.0.0packages/parse5-plain-text-conversion-stream/package.json
npmparse5^8.0.0packages/parse5-sax-parser/package.json
npmentities^8.0.0packages/parse5/package.json
All dependencies 262

Full resolved dependency set from the GitHub dependency graph: 13 direct and 249 indirect (transitive) packages. The transitive closure is complete when the repository commits a lockfile.

RegistryPackageVersionRelation
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npmlightningcss-win32-x64-msvc1.32.0indirect
npmlinkify-it5.0.2indirect
npmlocate-path6.0.0indirect
npmlodash4.18.1indirect
npmlunr2.3.9indirect
npmmagic-string0.30.21indirect
npmmagicast0.5.2indirect
npmmake-dir4.0.0indirect
npmmake-error1.3.6indirect
npmmarkdown-it14.3.0indirect
npmmdurl2.0.0indirect
npmminimatch10.2.5indirect
npmms2.1.3indirect
npmnano-staged1.0.2indirect
npmnanoid3.3.16indirect
npmnatural-compare1.4.0indirect
npmnode-releases2.0.19indirect
npmobug2.1.1indirect
npmoptionator0.9.3indirect
npmoutdent0.8.0indirect
npmp-limit3.1.0indirect
npmp-locate5.0.0indirect
npmpackages/parse58.0.1indirect
npmpackages/parse5-html-rewriting-stream8.0.1indirect
npmpackages/parse5-htmlparser2-tree-adapter8.0.1indirect
npmpackages/parse5-parser-stream8.0.0indirect
npmpackages/parse5-plain-text-conversion-stream8.0.0indirect
npmpackages/parse5-sax-parser8.0.0indirect
npmparse5-benchmarks1.0.0indirect
npmparse5-test-utils1.0.0indirect
npmpath-exists4.0.0indirect
npmpath-key3.1.1indirect
npmpathe2.0.3indirect
npmpicocolors1.1.1indirect
npmpicomatch4.0.4indirect
npmplatform1.3.6indirect
npmpluralize8.0.0indirect
npmpostcss8.5.23indirect
npmprelude-ls1.2.1indirect
npmprettier3.9.6indirect
npmpunycode2.3.1indirect
npmpunycode.js2.3.1indirect
npmregexp-tree0.1.27indirect
npmregjsparser0.12.0indirect
npmrolldown1.1.4indirect
npmscule1.3.0indirect
npmsemver7.7.3indirect
npmshebang-command2.0.0indirect
npmshebang-regex3.0.0indirect
npmsiginfo2.0.0indirect
npmsource-map-js1.2.1indirect
npmstackback0.0.2indirect
npmstd-env4.0.0indirect
npmsupports-color7.2.0indirect
npmtinybench2.9.0indirect
npmtinyexec1.0.2indirect
npmtinyglobby0.2.17indirect
npmtinyrainbow3.1.0indirect
npmts-api-utils2.5.0indirect
npmts-node10.9.2indirect
npmtslib2.8.1indirect
npmtype-check0.4.0indirect
npmtypedoc0.28.20indirect
npmtypescript6.0.3indirect
npmtypescript-eslint8.65.0indirect
npmuc.micro2.1.0indirect
npmundici-types7.10.0indirect
npmupdate-browserslist-db1.1.3indirect
npmuri-js4.4.1indirect
npmv8-compile-cache-lib3.0.1indirect
npmvite8.1.3indirect
npmvitest4.1.10indirect
npmwhich2.0.2indirect
npmwhy-is-node-running2.3.0indirect
npmyaml2.9.0indirect
npmyn3.1.1indirect
npmyocto-queue0.1.0indirect
Dependency advisories 2

This repository publishes no package the index resolves, so its own dependency graph was assessed — 255 packages, which also include development and test pins that never ship: 2 carry known advisories, of which 0 are direct. 7 could not be assessed — no resolved version, an unsupported ecosystem, or beyond the reported package list.

PackageVersionRelationSeverityAdvisoriesFixed in
brace-expansion5.0.7indirecthigh25.0.9
diff4.0.2indirectmoderate18.0.3

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 v0.30.0 — full methodology · metrics wiki.

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