GoogleChrome/lighthouse
What happens to a stranger's pull request here, in the Porchlamp snapshot of 17 October 2026.
Outside pull requests to GoogleChrome/lighthouse got a first human reply in a median of 2.9 days (21 pull requests, 18 April to 15 October 2026); 53% got none within 14 days. It ranks 1,755 of 3,219 overall. For first-time contributors it ranks 1,244 of 1,525 (the bottom 19%).
| Rank | 1,755 of 3,219 |
|---|---|
| Score | 49.25 |
| Tier | C |
| Median first reply | 2.9 days (69.4 hours) |
| 14-day no-reply share | 53% |
| First-timer rank | 1,244 of 1,525 |
| Ecosystem | JavaScript |
| Window | 18 April to 15 October 2026 |
Composite
- Rank
- 1,755 of 3,219
- Score
- 49.25
- Tier
- C
- Coverage
- 100% · Full
- Quadrant
- Crucible
Coordinates: leverage 53.5 (coverage 100%), friction 56.4 (coverage 100%)
Five pillars
| Pillar | Score | Coverage |
|---|---|---|
| Responsiveness | 41.7 | 100% |
| Criticality | 67.2 | 100% |
| Governance | 40.0 | 100% |
| Rigor | 39.7 | 100% |
| Accessibility | 53.8 | 100% |
The measured parameters
Responsiveness
| Parameter | Value | Score | Count | Window | Source |
|---|---|---|---|---|---|
| Decision Rate (90d)Share of outside pull requests that were merged or closed within 90 days. | 63.6% | 79.5 | 22 | 18 April to 17 July 2026 | primaryraw/pr_window/GoogleChrome__lighthouse.json |
| PR Ghost Rate (14d)Share of outside pull requests with no maintainer response, merge or close within 14 days. | 53.5% | 0.0 | 43 | 20 April to 17 October 2026 | primaryraw/pr_window/GoogleChrome__lighthouse.json |
| First-timer Merge RateShare of first-time outside authors' decided pull requests that were merged. | 41.7% | 52.1 | 24 | — | primaryraw/author_history/GoogleChrome__lighthouse.json |
| Time to First ResponseMedian hours from an outside pull request opening to its first substantive human reply. | 69.4 hours (2.9 days) | 36.7 | 21 | 18 April to 15 October 2026 | primaryraw/pr_window/GoogleChrome__lighthouse.json |
| Time to Merge (p90)Hours within which 90% of merged outside pull requests were merged. | 1620.4 hours (67.5 days) | 4.3 | 14 | 18 April to 15 October 2026 | primaryraw/pr_window/GoogleChrome__lighthouse.json |
Criticality
| Parameter | Value | Score | Count | Window | Source |
|---|---|---|---|---|---|
| DependentsPackages in the registry that depend on this project, counted once each. | 566 | 68.7 | — | — | primaryraw/dependents/GoogleChrome__lighthouse.json |
| Monthly DownloadsDownloads from the package registry in a month. | 87.1 million downloads a month | 86.5 | — | — | primaryraw/downloads/npm__lighthouse.json |
| OpenSSF CriticalityOpenSSF criticality score from 0 to 1, computed from the project's public activity signals. | 0.5162 | 51.6 | — | — | primaryraw/github_meta/GoogleChrome__lighthouse.json |
Governance
| Parameter | Value | Score | Count | Window | Source |
|---|---|---|---|---|---|
| Elephant FactorThe fewest organisations that account for half of the last year's commits. | 1 | 25.0 | 216 | — | primaryraw/commits_365d/GoogleChrome__lighthouse.json |
| Legal IP RegimeThe contributor licence regime: DCO, none, a foundation CLA or a corporate CLA. | Company CLA | 25.0 | — | — | primaryraw/governance/GoogleChrome__lighthouse.json |
| Promotion LadderHow openly a contributor can become a maintainer, from closed to verified. | A written path to becoming a maintainer | 75.0 | — | — | primaryraw/governance/GoogleChrome__lighthouse.json |
Rigor
| Parameter | Value | Score | Count | Window | Source |
|---|---|---|---|---|---|
| AI Policy PostureWhether the project has a written policy on AI-assisted contributions. | No written AI policy | 40.0 | — | — | primaryraw/governance/GoogleChrome__lighthouse.json |
| Pipeline DefensesHow well the project's build and review pipeline defends against bad changes, 0 to 100. | 65 | 65.0 | — | — | primaryraw/scorecard/GoogleChrome__lighthouse.json |
| Substantive Review RateShare of decided pull requests that received a substantive review. | 4.6% | 5.7 | 66 | 18 April to 15 October 2026 | primaryraw/pr_window/GoogleChrome__lighthouse.json |
Accessibility
| Parameter | Value | Score | Count | Window | Source |
|---|---|---|---|---|---|
| Developer ExperienceDeveloper experience, 0 to 100: half CI run time, half setup signals. | 50 | 50.0 | 18 | — | primaryraw/actions_runs/GoogleChrome__lighthouse.json |
| Newcomer ConversionShare of first-time authors whose first pull request merged within 180 days. | 40.0% | 80.0 | 15 | — | primaryraw/author_history/GoogleChrome__lighthouse.json |
| Newcomer Issue SupplyOpen, unassigned, up-to-date issues marked for newcomers. | 4 | 40.0 | — | — | primaryraw/gfi/GoogleChrome__lighthouse.json |
| Newcomer Return RateShare of those merged first-time authors who sent a second pull request within 90 days. | 14.3% | 28.6 | 7 | — | primaryraw/author_history/GoogleChrome__lighthouse.json |
Persona view
| Persona | Rank | Score | Tier | Status |
|---|---|---|---|---|
| Balanced | 1,755 of 3,219 | 49.25 | C | Rated |
| First-timer | 1,244 of 1,525 | 47.43 | C | Rated |
| Career capital | 592 of 798 | 52.59 | C | Rated |
| Senior systems | Fewer than 3 organizations account for most commits (not multi-vendor). | |||
| AI-assisted | 2,298 of 3,696 | 47.06 | C | Rated |
Integrity
- Snapshot
- 2026-10-17
- Raw hash
- 6274e5de74ecac1e416bb26af75232c01ec7ef7a7f4fa924088bd95e525a6fc3
No suspicion flags on this repository.
The full record is in data/2026-10-17/repos/f8.json, under the key GoogleChrome/lighthouse.
How every number is measured: Porchlamp methodology.
Open an issue about this record and say what looks wrong.
Porchlamp (2026). GoogleChrome/lighthouse. Snapshot 2026-10-17. https://porchlamp.org/projects/googlechrome/lighthouse/. CC BY 4.0.
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