Automated auditing, performance metrics, and best practices for the web.
C-Rank Grade: A (Welcoming) - 63/100
External PR Merge Rate: 65%
Response Time: 1d
First Timer Success: 56%
GoogleChrome/lighthouse has a recorded first-timer success rate of 55.6%. Repositories ranked A typically provide actionable feedback during code reviews and actively nurture new community contributors.
Maintainers in GoogleChrome/lighthouse respond to incoming external pull requests in approximately 33.1 hours on average. Keeping PRs focused on single tasks and ensuring tests pass helps maintainers review faster.
The C-Rank™ system evaluates GitHub projects on a 0–100 scale using real data: PR merge rates, review turnaround time, active maintainer presence, and first-time contributor success. A score of 63.2 places GoogleChrome/lighthouse in the A tier.
The external contributor pull request merge rate for GoogleChrome/lighthouse is 64.8%, based on public PR activity from non-core contributors.
GoogleChrome/lighthouse does not currently have active "good first issue" tags indexed, but accepts external contributions through standard GitHub issue tracking.
Automated auditing, performance metrics, and best practices for the web.
Highly encouraging & supportive maintainers (100% positive review sentiment). Active code reviews with constructive guidance for new contributors in GoogleChrome/lighthouse.
Average Response Latency
Tracks hours until a maintainer leaves a review, comment, or PR response.
External Acceptance Rate
Percentage of community pull requests successfully merged into main.
First PR Conversion
Rate at which developers submitting their first repository PR succeed.
Show contributors that your repository actively reviews and merges external pull requests.
[](https://getmerged.abhishekco.de/GoogleChrome/lighthouse?utm_source=github&utm_medium=badge)
Historical health & responsiveness evolution
External PR acceptance
First PR success rate
50% receive response in
90% receive response in
Maintainer review activity heatmap & prime window prediction
Calculating local time...
Calculating local time...
Detected: UTC
Maintainers are most responsive around 16:00 UTC (16:00 UTC in your timezone). Recommended submission window is Wednesday - Friday from 16:00 to 20:00 UTC (16:00 - 20:00 UTC local).
Maintainer Strategy: Maintainer Sweet Spot: PRs under 150 lines merge in ~22 hours (81% approval). Large PRs (>500 lines) take ~159 hours (29% approval). Keep your diff compact for rapid review.
No cached good first issues currently tracked for GoogleChrome/lighthouse.
Rate what actually matters after opening a pull request here.
Rate your first-hand PR experience (review speed, maintainer responsiveness, and onboarding ease) to help other contributors.
When evaluating whether to contribute to GoogleChrome/lighthouse, response velocity and maintainer engagement are crucial. GetMerged continuously tracks pull request trajectories, first-comment latency, and code review rounds to help developers avoid submitting pull requests to backlogged repositories.
Currently, maintainers of GoogleChrome/lighthouse acknowledge new external contributions in approximately 1 days+. Out of all submitted pull requests from non-core authors in the last 180-day window, 64.8% were successfully merged into the primary branch.
GoogleChrome/lighthouse has a recorded first-timer success rate of 55.6%. Repositories ranked Welcoming typically provide actionable feedback during code reviews and actively nurture new community contributors.
The initial maintainer response time averages ~1 days+. Keeping PRs scoped to single concerns and ensuring CI checks succeed will optimize review turnaround.
The C-Rank™ index scores repositories on a 0 to 100 scale using an objective formula: external PR merge rates, initial response speed, active maintainer count, and first-time contributor retention. A score of 63.2 places GoogleChrome/lighthouse in the Welcoming tier.
The external pull request merge rate is 64.8%. GetMerged isolates non-core community contributions so external developers get an accurate benchmark of PR acceptance probability.
GoogleChrome/lighthouse does not have open beginner labels indexed currently, but external PRs for bugs and documentation improvements are evaluated via normal issue triage.
All metrics displayed for GoogleChrome/lighthouse are automatically retrieved via the public GitHub API and recalculated daily. Insider pull requests submitted by repository owners or organization members are excluded from merge rate calculations to preserve objective external contributor statistics.