An open-source, web-based 'multi-up' viewer that supports zoom-pan-rotate functionality, ability to display/compare simple images, and images with annotations.
C-Rank Grade: B (Solid) - 52/100
External PR Merge Rate: 51%
Response Time: 2d
First Timer Success: 40%
ProjectMirador/mirador has a recorded first-timer success rate of 40.0%. Repositories ranked B typically provide actionable feedback during code reviews and actively nurture new community contributors.
Maintainers in ProjectMirador/mirador respond to incoming external pull requests in approximately 46.3 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 51.8 places ProjectMirador/mirador in the B tier.
The external contributor pull request merge rate for ProjectMirador/mirador is 50.8%, based on public PR activity from non-core contributors.
ProjectMirador/mirador currently has 2 active issue(s) tagged with beginner-friendly labels like "good first issue", "beginner", or "up-for-grabs".
An open-source, web-based 'multi-up' viewer that supports zoom-pan-rotate functionality, ability to display/compare simple images, and images with annotations.
Active maintainer team in ProjectMirador/mirador welcoming community pull requests and bug fixes.
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/ProjectMirador/mirador?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 14:00 UTC (14:00 UTC in your timezone). Recommended submission window is Tuesday - Thursday from 12:00 to 16:00 UTC (12:00 - 16:00 UTC local).
Limited recent maintainer review activity recorded for this repository. Prediction based on heuristic baseline.
Maintainer Strategy: Maintainer Sweet Spot: PRs under 150 lines merge in ~30 hours (63% approval). Large PRs (>500 lines) take ~222 hours (23% approval). Keep your diff compact for rapid review.
Enter your branch size and test coverage below to forecast review turnaround and get 1-click git splitting commands.
Alternative open-source projects with active maintainers in JavaScript.
local multi-agent harness
HTML5 video speed controller (for Google Chrome)
Eole blows gently into your ear his nicest melodies.
I don't know why this is literally the only class component remaining in /src -- maybe there is a reason. Good first issue I thought.
A11y issue -- automated audit -- Elements must only use supported ARIA attributes. Impact: Critical https://www.w3.org/WAI/WCAG22/Understanding/name-role-value.html In the vertical sidebar for copyright, etc, one of the wrapper divs has aria-orientation="vertical" but it should not, because that's not a valid attribute for a div without a role. Proposed solution: Remove that attribute from that div.
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 ProjectMirador/mirador, 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 ProjectMirador/mirador acknowledge new external contributions in approximately 1 days+. Out of all submitted pull requests from non-core authors in the last 180-day window, 50.8% were successfully merged into the primary branch.
ProjectMirador/mirador has a recorded first-timer success rate of 40.0%. Repositories ranked Solid 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 51.8 places ProjectMirador/mirador in the Solid tier.
The external pull request merge rate is 50.8%. GetMerged isolates non-core community contributions so external developers get an accurate benchmark of PR acceptance probability.
Yes, ProjectMirador/mirador currently has 2 active issue(s) tagged with beginner-friendly labels. You can inspect these directly from the repository issues tab.
All metrics displayed for ProjectMirador/mirador 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.