Public record
Software health reportschema 0.31.0 · metrics 2.10.0 · 2026-08-13 22:05 UTC

johannesvollmer / exrs

100% Safe Rust OpenEXR file library

RustCustom license★ 185 stars⑂ 36 forkssince Aug 2018View on GitHub ↗

johannesvollmer/exrs holds a health index of 75 out of 100, placing it in the Good band. It scores highest on Vitality (72/100) and lowest on AI Readiness (56/100). It was last updated 28 days ago. A single contributor accounts for most of its recent work.

75
overall / 100
Good

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.

75
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 65 is calibrated to 75 on the published index scale (record calibration 2026-08-02).

Ownership

Johannes VollmerPersonal account
44 followers63 public repossince Sep 2017

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
crates.ioexr1.74.25,211,9383133 days agobinaryexrfileioopenexrencodingfilesystemmultimediagraphics

Metrics by category

Vitality

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

72Good · 21% of overall
How it's scored
28.8/36Push recencylast push 28 days ago
6.9/36Commit cadence10/52 weeks with commits
18/18Commit volume175 commits in the last year
10/10OpenSSF Scorecard: Maintained30 commit(s) and 1 issue activity found in the last 90 days -- score normalized to 10
Inputs used
commits_last_year175
human_commit_share1
days_since_last_push28
active_weeks_last_year10
How it's scored
27/27Ships releases17 releases published
36/36Release recencylatest release 36 days ago
12.6/27Release cadencea release every ~219.6 days
0/10OpenSSF Scorecard: Signed-Releasesno data
Inputs used
releases_count17
latest_release_tagv1.74.1
releases_from_tagsno
days_since_latest_release36
mean_days_between_releases219.6
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?

62Moderate · 17% of overall
How it's scored
36.7/60Stars185 stars
12.9/25Forks36 forks
3.9/15Watchers6 watchers
Inputs used
forks36
stars185
watchers6
growth_stateunverified
growth_factor_pct100
growth_unverified_reasonno_history
How it's scored
22.5/22.5README
16.9/22.5Licenselicense file present, not a recognized license
0/18CONTRIBUTING guide
0/13.5Code of conduct
0/7.2Issue template
0/6.3PR template
Inputs used
has_readmeyes
has_licenseyes
readme_badges4
has_contributingno
has_issue_templateno
has_code_of_conductno
readme_badge_servicesshields.io
has_pull_request_templateno
How it's scored
80/80Monthly downloads5,211,938 downloads/month across crates
0/20Registry dependentsnot reported by this ecosystem
Inputs used
packagesexr
dependents
ecosystemscrates
total_downloads64,127,411
monthly_downloads5,211,938
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?

62Moderate · 23% of overall
How it's scored
9/54Bus factor1 contributor(s) cover half of all commits
3.4/22.5Commit distributiontop contributor authored 85% of commits
13.5/13.5Contributor breadth17 contributors
10/10OpenSSF Scorecard: Contributorsproject has 10 contributing companies or organizations
Inputs used
bus_factor1
contributors_sampled17
top_contributor_share0.847
How it's scored
26.2/42Issue resolution62% of issues closed
25.2/30PR acceptance106/126 decided PRs merged
13/13Newcomer PR acceptance1/1 first-time contributors' PRs merged in 30d
1.5/15OpenSSF Scorecard: Code-ReviewFound 1/7 approved changesets -- score normalized to 1
Inputs used
merged_prs106
open_issues54
closed_issues90
prs_merged_7d0
prs_decided_7d0
prs_merged_30d1
prs_decided_30d3
issue_closed_ratio0.625
closed_unmerged_prs20
first_time_authors_30d1
first_time_prs_merged_30d1
first_time_prs_decided_30d1
How it's scored
10/30Ownership backingpersonal (user) account
0/20Verified domainnot applicable to user accounts
11.9/25Owner reach44 followers of johannesvollmer
25/25Track record63 public repos, account ~8 yr old
Inputs used
followers44
owner_typeUser
is_verified
owner_loginjohannesvollmer
public_repos63
account_age_days3,252
Excluded from scoring (no data or not applicable): Verified domain. Remaining weights renormalized.

Package maintenance

100Exceptional
How it's scored
25/25Published & resolvable1 package(s) on crates
35/35Publish recencylatest publish 33 days ago
20/20Version history31 published versions
20/20Not deprecatedactive, not deprecated or yanked
Inputs used
packagesexr
ecosystemscrates
any_deprecatedno
min_days_since_publish33

Engineering Quality

Are baseline engineering and documentation practices in place?

71Good · 19% of overall
How it's scored
24/24CI workflows1 workflow(s)
24/24Tests present
0/16Linter config
0/9.6Pre-commit hooks
0/6.4.editorconfig
20/20OpenSSF Scorecard: CI-Tests5 out of 5 merged PRs checked by a CI test -- score normalized to 10
Inputs used
has_ciyes
has_testsyes
has_editorconfigno
has_linter_configno
has_precommit_configno
How it's scored
30/30README
0/25Documentation directory
15/15Documentation / homepage sitehttps://docs.rs/exr
10/10Repository description
10/10Topics6 topics
10/10Wiki
Inputs used
topicsopenexr, parallel, exr, file, rust, crate
has_wikiyes
homepage
docs_sitehttps://docs.rs/exr
has_readmeyes
has_docs_dirno
has_descriptionyes

Security

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

57Moderate · 16% of overall
How it's scored
7.5/7.5Binary-Artifactsno binaries found in the repo
0/7.5Branch-Protectionno data
2.5/2.5CI-Tests5 out of 5 merged PRs checked by a CI test -- score normalized to 10
0/2.5CII-Best-Practicesno effort to earn an OpenSSF best practices badge detected
0.8/7.5Code-ReviewFound 1/7 approved changesets -- score normalized to 1
2.5/2.5Contributorsproject has 10 contributing companies or organizations
10/10Dangerous-Workflowno dangerous workflow patterns detected
7.5/7.5Dependency-Update-Toolupdate tool detected
0/5Fuzzingproject is not fuzzed
2.2/2.5Licenselicense file detected
7.5/7.5Maintained30 commit(s) and 1 issue activity found in the last 90 days -- score normalized to 10
0/5Packagingno data
0/5Pinned-Dependenciesdependency not pinned by hash detected -- score normalized to 0
0/5SASTSAST tool is not run on all commits -- score normalized to 0
0/5Security-Policysecurity policy file not detected
0/7.5Signed-Releasesno data
0/7.5Token-Permissionsdetected GitHub workflow tokens with excessive permissions
0/7.5Vulnerabilities16 existing vulnerabilities detected
Inputs used
sourceopenssf_scorecard
checks_evaluated15
scorecard_versionv5.5.0
checks_inconclusive3
scorecard_aggregate4.8
Excluded from scoring (no data or not applicable): Branch-Protection, Packaging, Signed-Releases. Remaining weights renormalized.
How it's scored
35/35Direct dependencies free of known advisoriesno direct dependency carries a known advisory
19/25Indirect dependencies free of known advisories1 affected: paste 1.0.15 (unknown)
37.2/40No advisories left outstanding1 advisory-carrying package(s) unaddressed past 90 days; oldest published 675 days ago
Inputs used
sourceosv
advisories1
affected_packages1
assessed_packages55
unassessed_packages0
affected_by_severityunknown 1
direct_affected_packages0
Matched the crates:exr@1.74.2 runtime dependency closure — what installing the published package pulls in — 55 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.

56Moderate · 4% of overall
How it's scored
0/45Agent instructionsno CLAUDE.md / AGENTS.md / editor rules
0/15Machine-readable docs (llms.txt)
10.1/40Legible commit history19 of 100 human commits state their intent (structured subject or explanatory body)
Inputs used
has_llms_txtno
llms_txt_url
legible_history_share0.19
agent_instruction_files
agent_instruction_max_bytes
How it's scored
12.6/18One-command bootstrapCargo.toml, exrs-wasm/Cargo.toml (toolchain convention, no task runner)
22/22Automated tests
0/11Lint / format config
11/11Static type checkingexrs-wasm/examples/typescript-vite/tsconfig.json, exrs-wasm/js/tsconfig.json
10/10Reproducible environmentlockfile
2/10Demonstrated agent practice1 of the last 100 commits agent-authored or agent-credited
0/8Automated maintenanceno automated dependency updates observed
0/10OpenSSF Scorecard: Pinned-Dependenciesdependency not pinned by hash detected -- score normalized to 0
Inputs used
has_nixno
has_testsyes
lockfilespackage-lock.json
has_dockerfileno
typed_languageyes
bootstrap_files
has_devcontainerno
has_linter_configno
typecheck_configsexrs-wasm/examples/typescript-vite/tsconfig.json, exrs-wasm/js/tsconfig.json
agent_commit_share0.01
toolchain_manifestsCargo.toml, exrs-wasm/Cargo.toml
dependency_bot_commit_share0
How it's scored
45/45Type-checkable codeRust (statically typed)
53.1/55Manageable file sizes3/87 source files over 60KB
Inputs used
primary_languageRust
largest_source_bytes1,081,699
source_files_sampled87
oversized_source_files3
How it's scored
0/40API schema (OpenAPI/GraphQL/proto)not applicable to this kind of software
0/20MCP servernot applicable to this kind of software
40/40Runnable examplesexamples
Inputs used
example_dirsexamples
has_mcp_signalno
api_schema_files
interfaces_expected_of
Excluded from scoring (no data or not applicable): API schema (OpenAPI/GraphQL/proto), MCP server. Remaining weights renormalized.

Key facts

185GitHub stars
17contributors
175commits, last 12 months
28days since last push
17releases
1bus factor
54open issues
crates.iopackage ecosystems

Data collection warnings

  • Star history unavailable: GitHub GraphQL error: Resource not accessible by personal access token
  • Could not fetch crates package 'exrs-raw-wasm-bindgen' from its registry

More detail

Star and fork history 0 ★ / 36 ⇿
0Stars
36Forks
17Releases

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.

01325383512020-022023-042026-07
Major 1Minor 9Patch 7

Each point covers 6 days.

OpenSSF Scorecard 4.8 / 10
4.8aggregate

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 · 2026-08-13 22:04 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-Tests5 out of 5 merged PRs checked by a CI test -- score normalized to 10
0CII-Best-Practicesno effort to earn an OpenSSF best practices badge detected
1Code-ReviewFound 1/7 approved changesets -- score normalized to 1
10Contributorsproject has 10 contributing companies or organizations
10Dangerous-Workflowno dangerous workflow patterns detected
10Dependency-Update-Toolupdate tool detected
0Fuzzingproject is not fuzzed
9Licenselicense file detected
10Maintained30 commit(s) and 1 issue activity found in the last 90 days -- score normalized to 10
n/aPackagingpackaging workflow not detected
0Pinned-Dependenciesdependency not pinned by hash detected -- score normalized to 0
0SASTSAST tool is not run on all commits -- score normalized to 0
0Security-Policysecurity policy file not detected
n/aSigned-Releasesno releases found
0Token-Permissionsdetected GitHub workflow tokens with excessive permissions
0Vulnerabilities16 existing vulnerabilities detected
Direct dependencies 14
RegistryPackageVersion constraintManifest
crates.iolebe^0.5.2Cargo.toml
crates.iohalf2.1.0Cargo.toml
crates.iobit_field^0.10.1Cargo.toml
crates.iominiz_oxide^0.8.0Cargo.toml
crates.iosmallvec^1.7.0Cargo.toml
crates.iorayon-core^1.11.0Cargo.toml
crates.iozune-inflate^0.2.3Cargo.toml
crates.iopulp0.22.3Cargo.toml
crates.ionum-complex0.4.6Cargo.toml
crates.ioexrexrs-wasm/Cargo.toml
crates.iosmallvec1.7exrs-wasm/Cargo.toml
crates.iohalf2.1exrs-wasm/Cargo.toml
crates.iowasm-bindgen=0.2.100exrs-wasm/Cargo.toml
crates.ioconsole_error_panic_hook0.1exrs-wasm/Cargo.toml
All dependencies 167

Full resolved dependency set from the GitHub dependency graph: 11 direct and 156 indirect (transitive) packages. The transitive closure is complete when the repository commits a lockfile.

RegistryPackageVersionRelation
crates.iobit_fielddirect
crates.ioconsole_error_panic_hookdirect
crates.iohalfdirect
crates.iolebedirect
crates.iominiz_oxidedirect
crates.ionum-complexdirect
crates.iopulpdirect
crates.iorayon-coredirect
crates.iosmallvecdirect
crates.iowasm-bindgen0.2.100direct
crates.iozune-inflatedirect
crates.iobencherindirect
crates.ioimageindirect
crates.iorandindirect
crates.iorayonindirect
crates.iowalkdirindirect
npm@esbuild/aix-ppc640.21.5indirect
npm@esbuild/aix-ppc640.27.2indirect
npm@esbuild/android-arm0.21.5indirect
npm@esbuild/android-arm0.27.2indirect
npm@esbuild/android-arm640.21.5indirect
npm@esbuild/android-arm640.27.2indirect
npm@esbuild/android-x640.21.5indirect
npm@esbuild/android-x640.27.2indirect
npm@esbuild/darwin-arm640.21.5indirect
npm@esbuild/darwin-arm640.27.2indirect
npm@esbuild/darwin-x640.21.5indirect
npm@esbuild/darwin-x640.27.2indirect
npm@esbuild/freebsd-arm640.21.5indirect
npm@esbuild/freebsd-arm640.27.2indirect
npm@esbuild/freebsd-x640.21.5indirect
npm@esbuild/freebsd-x640.27.2indirect
npm@esbuild/linux-arm0.21.5indirect
npm@esbuild/linux-arm0.27.2indirect
npm@esbuild/linux-arm640.21.5indirect
npm@esbuild/linux-arm640.27.2indirect
npm@esbuild/linux-ia320.21.5indirect
npm@esbuild/linux-ia320.27.2indirect
npm@esbuild/linux-loong640.21.5indirect
npm@esbuild/linux-loong640.27.2indirect
npm@esbuild/linux-mips64el0.21.5indirect
npm@esbuild/linux-mips64el0.27.2indirect
npm@esbuild/linux-ppc640.21.5indirect
npm@esbuild/linux-ppc640.27.2indirect
npm@esbuild/linux-riscv640.21.5indirect
npm@esbuild/linux-riscv640.27.2indirect
npm@esbuild/linux-s390x0.21.5indirect
npm@esbuild/linux-s390x0.27.2indirect
npm@esbuild/linux-x640.21.5indirect
npm@esbuild/linux-x640.27.2indirect
npm@esbuild/netbsd-arm640.27.2indirect
npm@esbuild/netbsd-x640.21.5indirect
npm@esbuild/netbsd-x640.27.2indirect
npm@esbuild/openbsd-arm640.27.2indirect
npm@esbuild/openbsd-x640.21.5indirect
npm@esbuild/openbsd-x640.27.2indirect
npm@esbuild/openharmony-arm640.27.2indirect
npm@esbuild/sunos-x640.21.5indirect
npm@esbuild/sunos-x640.27.2indirect
npm@esbuild/win32-arm640.21.5indirect
npm@esbuild/win32-arm640.27.2indirect
npm@esbuild/win32-ia320.21.5indirect
npm@esbuild/win32-ia320.27.2indirect
npm@esbuild/win32-x640.21.5indirect
npm@esbuild/win32-x640.27.2indirect
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npm@rollup/rollup-android-arm644.55.3indirect
npm@rollup/rollup-android-arm644.56.0indirect
npm@rollup/rollup-darwin-arm644.55.3indirect
npm@rollup/rollup-darwin-arm644.56.0indirect
npm@rollup/rollup-darwin-x644.55.3indirect
npm@rollup/rollup-darwin-x644.56.0indirect
npm@rollup/rollup-freebsd-arm644.55.3indirect
npm@rollup/rollup-freebsd-arm644.56.0indirect
npm@rollup/rollup-freebsd-x644.55.3indirect
npm@rollup/rollup-freebsd-x644.56.0indirect
npm@rollup/rollup-linux-arm-gnueabihf4.55.3indirect
npm@rollup/rollup-linux-arm-gnueabihf4.56.0indirect
npm@rollup/rollup-linux-arm-musleabihf4.55.3indirect
npm@rollup/rollup-linux-arm-musleabihf4.56.0indirect
npm@rollup/rollup-linux-arm64-gnu4.55.3indirect
npm@rollup/rollup-linux-arm64-gnu4.56.0indirect
npm@rollup/rollup-linux-arm64-musl4.55.3indirect
npm@rollup/rollup-linux-arm64-musl4.56.0indirect
npm@rollup/rollup-linux-loong64-gnu4.55.3indirect
npm@rollup/rollup-linux-loong64-gnu4.56.0indirect
npm@rollup/rollup-linux-loong64-musl4.55.3indirect
npm@rollup/rollup-linux-loong64-musl4.56.0indirect
npm@rollup/rollup-linux-ppc64-gnu4.55.3indirect
npm@rollup/rollup-linux-ppc64-gnu4.56.0indirect
npm@rollup/rollup-linux-ppc64-musl4.55.3indirect
npm@rollup/rollup-linux-ppc64-musl4.56.0indirect
npm@rollup/rollup-linux-riscv64-gnu4.55.3indirect
npm@rollup/rollup-linux-riscv64-gnu4.56.0indirect
npm@rollup/rollup-linux-riscv64-musl4.55.3indirect
npm@rollup/rollup-linux-riscv64-musl4.56.0indirect
npm@rollup/rollup-linux-s390x-gnu4.55.3indirect
npm@rollup/rollup-linux-s390x-gnu4.56.0indirect
npm@rollup/rollup-linux-x64-gnu4.55.3indirect
npm@rollup/rollup-linux-x64-gnu4.56.0indirect
npm@rollup/rollup-linux-x64-musl4.55.3indirect
npm@rollup/rollup-linux-x64-musl4.56.0indirect
npm@rollup/rollup-openbsd-x644.55.3indirect
npm@rollup/rollup-openbsd-x644.56.0indirect
npm@rollup/rollup-openharmony-arm644.55.3indirect
npm@rollup/rollup-openharmony-arm644.56.0indirect
npm@rollup/rollup-win32-arm64-msvc4.55.3indirect
npm@rollup/rollup-win32-arm64-msvc4.56.0indirect
npm@rollup/rollup-win32-ia32-msvc4.55.3indirect
npm@rollup/rollup-win32-ia32-msvc4.56.0indirect
npm@rollup/rollup-win32-x64-gnu4.55.3indirect
npm@rollup/rollup-win32-x64-gnu4.56.0indirect
npm@rollup/rollup-win32-x64-msvc4.55.3indirect
npm@rollup/rollup-win32-x64-msvc4.56.0indirect
npm@standard-schema/spec1.1.0indirect
npm@types/chai5.2.3indirect
npm@types/deep-eql4.0.2indirect
npm@types/estree1.0.8indirect
npm@types/node25.0.9indirect
npm@types/shallow-equals1.0.3indirect
npm@vitest/expect4.0.17indirect
npm@vitest/mocker4.0.17indirect
npm@vitest/pretty-format4.0.17indirect
npm@vitest/runner4.0.17indirect
npm@vitest/snapshot4.0.17indirect
npm@vitest/spy4.0.17indirect
npm@vitest/utils4.0.17indirect
npmassertion-error2.0.1indirect
npmchai6.2.2indirect
npmes-module-lexer1.7.0indirect
npmesbuild0.21.5indirect
npmesbuild0.27.2indirect
npmestree-walker3.0.3indirect
npmexpect-type1.3.0indirect
npmexrs1.0.0indirect
npmexrs1.0.2indirect
npmexrs-raw-wasm-bindgen0.1.0indirect
npmfdir6.5.0indirect
npmfsevents2.3.3indirect
npmmagic-string0.30.21indirect
npmnanoid3.3.11indirect
npmobug2.1.1indirect
npmpathe2.0.3indirect
npmpicocolors1.1.1indirect
npmpicomatch4.0.3indirect
npmpostcss8.5.6indirect
npmprettier3.8.1indirect
npmrollup4.55.3indirect
npmrollup4.56.0indirect
npmshallow-equals1.0.0indirect
npmsiginfo2.0.0indirect
npmsource-map-js1.2.1indirect
npmstackback0.0.2indirect
npmstd-env3.10.0indirect
npmtinybench2.9.0indirect
npmtinyexec1.0.2indirect
npmtinyglobby0.2.15indirect
npmtinyrainbow3.0.3indirect
npmtslib2.8.1indirect
npmtypescript5.9.3indirect
npmundici-types7.16.0indirect
npmvite5.4.21indirect
npmvite7.3.1indirect
npmvitest4.0.17indirect
npmwhy-is-node-running2.3.0indirect
Dependency advisories 1

Installing crates:exr@1.74.2 pulls in 55 packages, direct and transitive: 1 carry known advisories, of which 0 are direct dependencies.

PackageVersionRelationSeverityAdvisoriesFixed in
paste1.0.15indirectunknown1

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

Feedback

Spotted something off in this report, or have thoughts to share? Wrong measurements, missed tooling, ideas, questions — anything is welcome. Every message is read and gets a response.

The message is kept through sign-in.

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 v0.31.0 — full methodology · metrics wiki.

How one result sits in the wider record: aggregate statisticscrates.io.