ui-before-after

ui-before-after is an End-to-end & browser testing skill for AI agents, published by Stirling-Tools in the Stirling-PDF repository on GitHub. Skillspace rates ui-before-after D (62/100) and it passed the safety scan; the rating is based on static analysis only.

Analyse a branch or PR and automatically capture before/after screenshots of every UI surface its changes touch, then pixel-diff the pairs to surface what actually changed and assemble PR-ready before/after montage images. Generic and diff-driven: it derives the capture targets from the diff (changed tools/routes → URLs) instead of hand-listing screens, captures "before" from the base branch and "after" from the head, then keeps only the views that visually differ. Each comparison is auto-cropped to the region that actually changed (the bounding box of differing pixels), falling back to the full page only when the change spans most of it. Use for before/after shots, a visual diff of a branch/PR, "screenshots for the PR description", "show what changed in the UI", or a side-by-side of UI changes. Takes a PR number/URL (resolved via gh) or a branch; defaults to the current branch vs its base. Flags: --scope <selector>, --base <ref|merge-base>, --theme light|dark|both, --all (capture…

Grade
D
Quality
62 / 100
Safety
Passed
GitHub stars
87,185

Unproven: rated by static analysis only, not yet compared head-to-head.

Our two independent classifiers differ on this skill's category, so treat the placement as provisional.

This rating describes the version of the repository we crawled; it may have changed since, so go by its current files.

View source on GitHubStirling-Tools/Stirling-PDF

Our review

Architecture
78 / 100
Maturity
Structured: ships references or scripts
Security scan
No issues found
License
Not declared. Check the repository before reusing it.
Adoption
Adopted by 0 other repositories, in 1 collections
Scope
Portable: works in any project. Generic diff-driven before/after UI screenshot workflow for any PR

Not checked yet

  • Not judged on the rubric yet (not a contender in its category)
  • No blind task eval yet
  • Sibling files (scripts, references) not fetched; security scan covers SKILL.md only

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