c0ee744 · 14,518 commits · 4,560 files
Issued 2026-10-04
SixLabors-Split-1.0 since 2022-07-16: source available, not open source; Apache-2.0 only for open-source or source-available projects, transitive use, companies under 1M USD annual revenue and non-profits; a commercial licence for everyone else.
105 checks ran across 6 assessable dimensions. None found a significant problem; 1 raised something worth a question. 5 findings, each with evidence. One dimension cannot be assessed without an acquirer.
- 05.60 SixLabors-Split-1.0 since 2022-07-16: source available, not open source; Apache-2.0 only for open-source or source-available projects, transitive use, companies under 1M USD annual revenue and non-profits; a commercial licence for everyone else
- 05.66 The licence is SixLabors-Split-1.0: source available, not open source LICENSE:1
- 05.60 Relicensed: Apache-2.0 → AGPL-3.0 (2020-04-30) → Apache-2.0 (2020-06-07) → SixLabors-Split-1.0 (2022-07-16) LICENSE
- 1 submodule(s) this survey does not read: shared-infrastructure .gitmodules:1
- 1 finding from checks Borehole's calibration found wrong more often than right is no longer published.
| Dimension | Rating | ||
|---|---|---|---|
| 01 | Architecture & Codebase — including AI provenance | strong | |
| 02 | Engineering Process & SDLC Maturity | strong | |
| 03 | Organization & Key-Person Risk | adequate | |
| 04 | Product & Engineering Maturity | strong | |
| 05 | Security & Reliability Posture | strong | |
| 06 | Observability & Operations | not assessable | |
| 07 | Fit with the Acquirer | not assessable |
- 21% of non-merge commits carry any trailer at all
- low trailer coverage: the convention may not be in consistent use
- no widespread author/committer date divergence
Architecture & Codebase — including AI provenance
01 · strong · ratings ↑src/ImageSharp/PixelFormats/PixelBlenders/PorterDuffFunctions.Generated.cs is 13,192 lines, 173× this codebase's median file
adequateThe median source file here is 76 lines. 25 files exceed 1,000 lines, the largest being 13,192. Size is not a defect on its own — some problems genuinely live in one place — but these are where merge conflicts, review fatigue and single-owner knowledge concentrate, and they are the first thing that slows an inheriting engineer down. Measured against its own codebase's median, it is larger than 87% of 382 surveyed projects' largest files.
A note that does not affect this rating: notes like it are common in well-run projects.
| line-count | src/ImageSharp/PixelFormats/PixelBlenders/PorterDuffFunctions.Generated.cs:1 — 13,192 lines (173× median) |
| line-count | src/ImageSharp/PixelFormats/PixelBlenders/AssociatedAlphaPorterDuffFunctions.Generated.cs:1 — 10,922 lines (143× median) |
| line-count | src/ImageSharp/PixelFormats/PixelBlenders/AssociatedAlphaPixelBlenders.Generated.cs:1 — 6,109 lines (80× median) |
| line-count | src/ImageSharp/PixelFormats/PixelBlenders/DefaultPixelBlenders.Generated.cs:1 — 6,109 lines (80× median) |
| line-count | src/ImageSharp/Formats/Png/PngDecoderCore.cs:1 — 2,569 lines (33× median) |
Respond to this finding
Your response is published beside the finding, not instead of it. A finding you can argue with is the point — and a wrong one is calibration data we want.
An owner's response is removed only when it is unlawful, impersonates someone, publishes personal data or a credential, or is not about the finding. Disagreeing with the report is never a reason. To report a response, or to reach us about one, write to takedown@borehole.dev.
Engineering Process & SDLC Maturity
02 · strong · ratings ↑No finding. 16 checks ran and none fired; the rejection log below says why each did not.
Organization & Key-Person Risk
03 · adequate · ratings ↑Bus factor 1: recent work is concentrated in one contributor
adequateIn the last 24 months, one contributor authored more than half of 602 non-merge commits among 22 authors; across all history, a quarter or more of 11,339. In a project with 22 recent contributors and 14 years of history, that is a question about one person's role rather than a fragile team — but it is the question to ask.
| git shortlog -sn | last 24 months: top author more than half of 602 commits; bus factor 1; 22 authors |
Respond to this finding
Your response is published beside the finding, not instead of it. A finding you can argue with is the point — and a wrong one is calibration data we want.
An owner's response is removed only when it is unlawful, impersonates someone, publishes personal data or a credential, or is not about the finding. Disagreeing with the report is never a reason. To report a response, or to reach us about one, write to takedown@borehole.dev.
Product & Engineering Maturity
04 · strong · ratings ↑No finding. 19 checks ran and none fired; the rejection log below says why each did not.
Security & Reliability Posture
05 · strong · ratings ↑The licence is SixLabors-Split-1.0: source available, not open source
adequateLICENSE grants SixLabors-Split-1.0: source available, not open source; Apache-2.0 only for open-source or source-available projects, transitive use, companies under 1M USD annual revenue and non-profits; a commercial licence for everyone else. The reading comes from the licence's own title and clauses. Whether the terms fit the buyer's intended use, and whether any paid licence transfers with the code, is a question for counsel and the licensor.
A note that does not affect this rating: it names the project's licence, a fact for the first screen rather than a weakness.
| LICENSE | LICENSE:1 — 43 lines, LicenseRef-SixLabors-Split-1.0 |
Respond to this finding
Your response is published beside the finding, not instead of it. A finding you can argue with is the point — and a wrong one is calibration data we want.
An owner's response is removed only when it is unlawful, impersonates someone, publishes personal data or a credential, or is not about the finding. Disagreeing with the report is never a reason. To report a response, or to reach us about one, write to takedown@borehole.dev.
Relicensed: Apache-2.0 → AGPL-3.0 (2020-04-30) → Apache-2.0 (2020-06-07) → SixLabors-Split-1.0 (2022-07-16)
adequateThe root licence changed 3 time(s). The latest terms restrict what users, hosts or a buyer may do in ways the earlier ones did not. Code taken under the old terms stays under them, so both matter in diligence.
A note that does not affect this rating: a licence change is a fact for the first screen, and only a narrowing of rights within two years of the surveyed commit costs "strong".
| 5e55856b0 | LICENSE — Apache-2.0 from 2018-01-17 |
| 4ae5ae769 | LICENSE — AGPL-3.0 from 2020-04-30 |
| a8d8ab06b | LICENSE — Apache-2.0 from 2020-06-07 |
| 2c42e41cc | LICENSE — SixLabors-Split-1.0 from 2022-07-16 |
Respond to this finding
Your response is published beside the finding, not instead of it. A finding you can argue with is the point — and a wrong one is calibration data we want.
An owner's response is removed only when it is unlawful, impersonates someone, publishes personal data or a credential, or is not about the finding. Disagreeing with the report is never a reason. To report a response, or to reach us about one, write to takedown@borehole.dev.
11 advisories against this project in the last 24 months, 7 high or critical
adequateThe newest was published on 2026-09-15. A project that publishes advisories is telling its users about its fixes, and the count and pace say how much security work it carries. None of them affects the surveyed version.
A note that does not affect this rating: it describes the project's advisory record, and no advisory in it is known to affect the surveyed commit.
| GHSA-gwg2-r3hj-4w44 | 2026-09-15: GHSA-gwg2-r3hj-4w44 (moderate), fixed in 4.1.2: ICC CLUT parsing allocates from unvalidated channel and grid dimensions |
| GHSA-j3p4-wp97-rph4 | 2026-09-15: GHSA-j3p4-wp97-rph4 (high), fixed in 4.1.2: HistogramEqualization uses an unvalidated luminance as an unchecked histogram index |
| GHSA-wmxv-xphr-5c9g | 2026-09-15: GHSA-wmxv-xphr-5c9g (moderate), fixed in 4.1.2: BigTIFF IFD count can keep a decoder thread in a non-progressing loop |
| GHSA-jjfr-hcj7-qf5w | 2026-09-15: GHSA-jjfr-hcj7-qf5w (high), fixed in 4.1.2: TIFF CCITT T6 encoder writes beyond an undersized output buffer |
| GHSA-j9gm-c75j-xc9q | 2026-09-15: GHSA-j9gm-c75j-xc9q (high), fixed in 4.1.2: TIFF CCITT T4 encoder can write past its compressed output buffer |
Respond to this finding
Your response is published beside the finding, not instead of it. A finding you can argue with is the point — and a wrong one is calibration data we want.
An owner's response is removed only when it is unlawful, impersonates someone, publishes personal data or a credential, or is not about the finding. Disagreeing with the report is never a reason. To report a response, or to reach us about one, write to takedown@borehole.dev.
Observability & Operations
06 · not assessable · ratings ↑Not rated: only 4 of 16 checks could reach a conclusion here; the rest do not apply to this repository or could not read it. What a person adds here.
Fit with the Acquirer
07 · not assessable · ratings ↑Not rated: structurally not assessable from a repository. What a person adds here.
What a person adds
The survey reads what the repository can show. The code cannot settle these questions, and on them this report states nothing. Each says where its answer lives: your own engineer, the company, or an assessor you choose can settle it. Questions marked measured open with something this repository shows.
Architecture & Codebase — including AI provenance
01 · full coverage- measured No architecture or design document is in the tree, across 1,438 product files. Where does the design live, and who holds it?
- measured The repository pulls code in through git submodules (.gitmodules). A buyer receives pointers, not that code. Can every submodule be fetched without the team's credentials, and who owns each one?
- Is the architecture right for the next three years of the product?
- Were the home-grown components reasonable choices when they were made, and are they now?
Engineering Process & SDLC Maturity
02 · high coverage- Is review real or a rubber stamp? Comment depth and time to approve need the pull request history.
- Is delivery planned and measured, or heroic?
- How are incidents run, reviewed and learned from?
Organization & Key-Person Risk
03 · partial coverage- measured One contributor authored a quarter or more of the commits in this history. Is that person part of the transaction, and for how long after it?
- Who mentors whom, and would that survive a departure?
- Can the team grow, and who stands behind the top three contributors?
- Is the seniority mix sound, and will pay survive your salary bands?
- Is the pace sustainable? Commit times cannot say: git keeps no reliable local time.
- Does the team want to stay after close?
- How are decisions made and disagreements resolved?
Product & Engineering Maturity
04 · minimal coverage- measured 373 commits landed in the last year, against 229 the year before (+63%). What drove it: new people, a deadline, or code produced faster than before?
- Can this team deliver the stated roadmap on the stated timeline?
- Does leadership know about the debt, and is time budgeted to repay it?
- Is the engineering shape consistent with the commercial story?
Security & Reliability Posture
05 · partial coverage- What has actually broken, how often, and how badly?
- What did external testing find, and was it fixed?
- What is the SOC 2, ISO 27001 or GDPR status, and where is the evidence?
Observability & Operations
06 · partial coverageNot rated: only 4 of 16 checks could reach a conclusion here; the rest do not apply to this repository or could not read it.
- Are the dashboards opened, the alerts acknowledged and the pages answered?
- Are the service-level objectives actually met?
- Who carries the pager, and how often does it go off?
- What does it cost to run, and how much headroom is there?
Fit with the Acquirer
07 · none coverageNot rated: structurally not assessable from a repository.
- This is primarily a C# codebase. Does your engineering organisation already run C# in production, or would this be the first?
- The bulk of this system sits in src/. Which of your existing systems would each of those have to absorb or replace?
- Nothing in the repository says how this is deployed. Is it shipped as a library, a binary or a service, and if it runs somewhere, who owns that environment?
- What is your tolerance for the findings above remaining unaddressed for the first two quarters after close, given everything else that will compete for this team's time?
- Which of these systems duplicate yours, and which get retired?
- What will integration cost, and in what order?
- Where does the team land in your organisation, and who reports to whom?
- Are there earn-outs, retention packages or contractor IP to assign?
- Do customer contracts limit hosting, regions or vendors?
A human assessment is Borehole's own paid service, €12,000+ (total price is determined per engagement; travel billed at cost). It is not independent of this report: the same business produced both. It is a separate contract, with its own scope, terms and reliance.
A paid survey of a public repository is also reviewed: a language model reads each finding against the code and withdraws only findings it judges the code contradicts, each listed with its reason. The review is a language model's reading of the findings against the code, and it can be wrong. It never adds a finding, never raises a band, and never removes a finding from a proven check or an advisory that affects the surveyed version.
Embed the badge
Tied to this commit and this date, and it fades after 90 days — an honest badge is one that expires. A repository with significant findings gets a neutral "read" badge rather than a red one: the library is where the range is visible, not someone else's README.
[](/r/sixlabors/imagesharp/c0ee744)If you embed it: link it to the report, remove it if the report is delisted, and do not present it as a certification or an endorsement.
Rejection log — 100 signals that ran and did not fire
Appendix: rejection log — 100 signals that ran and did not fire
Published on purpose. A signal that looked and decided not to fire has told you something, and this is the calibration data behind every threshold above.
Looked, and found nothing — 63
| Signal | What it found |
|---|---|
| 04.hotspot_concentration | change is spread across the codebase rather than pooling in a few filesfiles 18,733 · top5 share 0.019 |
| 04.debt_markers | debt markers are sparsemarkers 166 · per kloc 0.44 · lines read 377,865 |
| 04.test_growth | test effort kept pace with code writtenlate test per code 0.297 · early test per code 0.378 |
| 04.churn_trend | rework is not rising against new worklate delete per insert 0.563 · early delete per insert 0.783 |
| 04.fixes_with_tests | fixes usually come with a testfixes 120 · share 0.617 · with tests 74 |
| 06.telemetry_presence | this repository does not deploy a running service, so instrumentation is not expected of itbasis nothing in this repository deploys a long-running server; if it runs as one, its deployment lives elsewhere · files read 2,234 |
| 06.structured_logging | not a running service; structured logging is not expected of a librarybasis nothing in this repository deploys a long-running server; if it runs as one, its deployment lives elsewhere |
| 06.healthcheck_presence | not a running service, so a health endpoint is not expectedbasis nothing in this repository deploys a long-running server; if it runs as one, its deployment lives elsewhere |
| 06.migrate_on_start | migrations do not run at container start |
| 03.active_contributors | more than one contributor active in the trailing yearall time 185 · active 12mo 11 |
| 03.drive_by_contributors | an open contributor base, where one-commit contributors are normalauthors 185 · one off share 0.319 |
| 03.contributor_attrition | the dominant contributor is still activeauthors 185 · top share a quarter or more · top contributor last committed within the last three months |
| 03.critical_path_ownership | more than one person changes the critical pathsauthors 22 |
| 03.second_contributor_attrition | the second and third contributors are still active |
| 03.bus_factor_trend | the team has not narrowed to one person |
| 03.joiners_and_leavers | the team is not shrinkingleft 5 · joined 5 · regular last year 8 |
| 02.merge_discipline | a meaningful share of recent change carries evidence of reviewmerges 277 · window last 24 months · with tracked 18 |
| 02.ci_presence | CI configuration is present in the working treecount 2 |
| 02.test_presence | tests are present in a normal proportion to sourcetests 774 · source 2,130 · test ratio 0.363 |
| 02.release_cadence | tags are presenttags 50 |
| 02.conventional_commits | commit subjects generally carry contentsampled 11,363 · low content share 0.058 |
| 02.branch_protection_hints | process scaffolding is present in the repository |
| 02.ci_runs_tests | CI invokes a test runnerconfigs 2 · with tests 2 |
| 02.skipped_tests | few tests are switched offfocused 0 · skipped 0 · test files 3,113 |
| 02.ci_test_gating | no test run in CI is written so that it cannot failconfigs 2 |
| 02.revert_share | change is rarely undoneshare 0.008 · reverts 5 · recent commits 602 |
| 02.flaky_test_markers | tests are not retried until they passtest retries 0 · suite retries 0 |
| 02.long_lived_branches | the typical branch reaches the trunk quicklyshare 0.129 · merges 139 · long lived 18 |
| 02.commit_size | changes arrive in reviewable sizesshare 0.039 · commits 569 · over 2000 lines 22 |
| 01.burst_import | no commit run met both the rate and the net-addition thresholdgap seconds 180 · min add ratio 3.0 · min net added 2,000 |
| 01.initial_dump | first commit is not a disproportionate share of the codebaseinsertions 17,728 · share of insertions 0.009 |
| 01.message_uniformity | commit subjects vary in wording and lengthlength stdev 22.05 · repeat share 0.234 |
| 01.revision_depth | most files were revisited after they were first writtenfiles seen 1,411 · write once share 0.06 |
| 01.duplicated_blocks | little shipping code is repeated verbatim across filesshare 0.0125 · product files 1,356 · distinct blocks 111,966 |
| 01.swallowed_errors | errors are rarely thrown awayloc 380,081 · files 0 · per kloc 0.0 |
| 01.unfinished_migration | no language migration is stalled halfway |
| 01.weights_in_git | no model weights are committedfiles 0 |
| 05.committed_secrets | no credential-shaped strings outside test and fixture pathsnote the working tree only; the history is 05.5 · patterns 8 · files read 2,234 |
| 05.security_guardrails | at least one standard guard rail is configured |
| 05.license_present | a licence file is presentfound True |
| 05.secrets_in_history | no credential-shaped string was ever added outside test and fixture pathspatterns 8 · truncated False · added lines 1,757,438 |
| 05.secrets_management_pattern | no environment file is committed outside tests and examplesenv files 0 |
| 05.supply_chain_pinning | third-party build steps are pinned, or fewaction refs 19 · pipe to shell 0 · unpinned third party 2 |
| 05.shell_from_strings | product code does not build shell commands from stringssites 0 |
| 05.unsafe_deserialization | no code-executing deserialiser in product codesites 0 |
| 05.tls_verification_off | no TLS verification is switched off in product codefiles 0 · sites 0 · pinned instead 0 |
| 05.known_vulnerabilities | no locked dependency has a published advisoryadvisories 0 · dependencies 2 · high or critical 0 |
| 05.privileged_workloads | no workload runs privileged or in the host's namespacessites 0 · behind a setting or built here 0 |
| 05.credentials_in_deploy_config | deployment configuration references secrets, never holds themfiles 0 · sites 0 |
| 05.signing_material | no signing keystore or profile is committedfiles 0 |
| 05.license_copyleft_inherited | every licence found in vendored code is permissive or weak-copyleftvendored paths 1,179 |
| 05.license_vendored_unlicensed | no vendored third-party code is committedcomponents 0 |
| 05.committed_native_libraries | no widely used compiled library is committed to the productlibraries 0 |
| 04.dependency_churn | few dependencies were added and dropped within 60 daysdependencies seen 2 · added in two years 0 · removed within 60 days 0 |
| 04.ci_platforms_dropped | no platform was dropped from CI in the last two years |
| 04.repository_status | the README's first screen states no end, move or freezestatements 0 |
| 02.development_elsewhere | nothing says development happens elsewhereno pr statements 0 · mirror statements 0 · replayed commit share 0.0 |
| 05.paid_edition | no directory carries a separate paid-edition licencedirectories 0 |
| 04.releases_stopped | releases keep pace with developmentmedian gap days 31.0 · days since last tag 20 · commits last 90 days 165 |
| 04.release_branch | the newest release was cut from the branch surveyedelsewhere 33 · on branch 17 · tags in window 50 |
| 03.single_maintainer | no file says one person maintains itstatements 0 |
| 05.project_advisories | no published advisory affects the surveyed versionaffecting 0 · exploited 0 · advisories 16 |
| 05.project_exploited | no affecting advisory is on CISA's Known Exploited listexploited 0 |
Could not conclude, or did not apply — 37
Not a clean result. Each says why it could not answer here.
| Signal | Why |
|---|---|
| 04.dependency_sprawl | no recognised dependency manifest found |
| 04.eol_runtime | no pinned runtime version to check |
| 04.fix_share_trend | fewer than six busy quarters to compare |
| 04.schema_churn | no schema migrations to read |
| 04.compat_layers | a library, whose compatibility code is usually deliberate |
| 04.dependency_redundancy | no JavaScript manifest to read |
| 06.telemetry_depth | not expected of it: nothing in this repository deploys a long-running server; if it runs as one, its deployment lives elsewhere |
| 06.print_logging | not expected of it: nothing in this repository deploys a long-running server; if it runs as one, its deployment lives elsewhere |
| 06.correlation_ids | not expected of it: nothing in this repository deploys a long-running server; if it runs as one, its deployment lives elsewhere |
| 06.error_reporting | not expected of it: nothing in this repository deploys a long-running server; if it runs as one, its deployment lives elsewhere |
| 06.usage_reporting_default | a reporting host is named, but no setting shows whether it is used by default |
| 06.alert_rules | not expected of it: nothing in this repository deploys a long-running server; if it runs as one, its deployment lives elsewhere |
| 06.deployed_image_floats | not expected of it: nothing in this repository deploys a long-running server; if it runs as one, its deployment lives elsewhere |
| 06.probes_identical | no Kubernetes probes |
| 06.single_replica | no Kubernetes deployments |
| 06.environment_branching | not expected of it: nothing in this repository deploys a long-running server; if it runs as one, its deployment lives elsewhere |
| 06.release_markers | not expected of it: nothing in this repository deploys a long-running server; if it runs as one, its deployment lives elsewhere |
| 06.feature_flags | no feature-flag service; flags may live elsewhere |
| 03.knowledge_silos | too few substantial top-level directories to read ownership |
| 02.dependency_update_cadence | no lockfile to date |
| 01.build_reproducibility | no product Dockerfile to read |
| 01.notebook_outputs | not a data or machine-learning repository |
| 05.dependency_pinning | no manifest whose pinning can be read without a lockfile |
| 05.container_runs_as_root | no Dockerfile to read |
| 05.outbound_timeouts | not a running service |
| 05.migration_reversibility | too few migrations to judge |
| 05.sql_from_strings | not a running service; a library that builds SQL is doing its job |
| 05.resource_limits | no Kubernetes workload manifests |
| 05.public_env_secret | not a frontend |
| 05.unsafe_html | not a frontend |
| 05.source_maps_shipped | not a frontend |
| 05.cleartext_traffic | not a mobile app |
| 05.dataset_provenance | not a data or machine-learning repository |
| 05.license_manifest_conflict | no packaging manifest states a licence |
| 04.flags_accumulating | few or no feature flags in the history |
| 04.api_versions_coexisting | not a running service |
| 04.deprecations_lingering | a library, which keeps deprecated interfaces for its users |
Anyone can check this report against the authoritative record — click the stamp, or enter Q45H-7VYG-VRB2 at borehole.dev/verify.
The code commits to the 106 checks this run performed, the bands they produced, and the commit they were read at. It does not cover checks written since.
Put the mark in your README
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[](https://borehole.dev/verify/Q45H7VYGVRB2?via=badge)
A survey is a reading by a particular version of the assessor. Older readings are kept rather than replaced, because a verification mark attests to the survey it was issued for — overwriting one would make every code already in circulation read as tampered.
| Read | Assessor | Findings | Band |
|---|---|---|---|
| 2026-10-04 · shown | borehole 0.7.13 | 6 | adequate |
4 earlier (show)
| 2026-10-03 | borehole 0.7.12 | 6 | adequate |
| 2026-10-03 | borehole 0.7.11 | 6 | adequate |
| 2026-10-02 | borehole 0.7.10 | 6 | adequate |
| 2026-10-01 | borehole 0.7.9 | 5 | adequate |
Where this scan ran
This scan ran on ordinary cloud infrastructure (cloud-run), not in a hardware-isolated confidential VM. Nothing about it is attested by Google.
What an attested survey proves, and what it does not.
What this scan did with the repository — 3 steps
Written by the steps themselves as they ran, not described afterwards. A hand-written account of a data flow drifts the first time somebody changes the flow and not the account.
| At | Step | Detail |
|---|---|---|
| 0.0s | re-read from the facts kept at the last survey; nothing was cloned | facts version: 1d7c04ef8dca7905 |
| 11.3s | ran the deterministic checks | blame pass: Falseread working tree: False |
| 11.3s | recorded where this scan ran | attested: Falseenvironment: cloud-run |
Total 11.3s ·source content sent off this machine: none · calls to a language model: 0 · the clone was deleted when the survey ended
An automated reading of a repository's code and its history up to one commit, with public advisory records. It may be wrong, it is not legal, financial, investment or security advice, and it does not replace diligence by a qualified person. It is provided for information: nobody may rely on it (Borehole's terms, section 3).