BackstopJS Visual Testing
BackstopJS visual regression testing for self-hosted visual comparison
npx skills add a5c-ai/babysitter --skill backstopjs-visual --agent claude-code
Same command for any agent — swap --agent for codex, cursor, copilot.
Weekly change comes from our own snapshots, not the repository page — it measures attention, not adoption.
# BackstopJS Visual Testing Skill ## Overview This skill provides expert-level capabilities for BackstopJS-based visual regression testing, enabling self-hosted visual comparison without external dependencies. ## Capabilities ### Scenario Configuration - Configure BackstopJS scenarios - Define viewport configurations - Set up selectors for capture - Configure scenario-specific settings ### Reference Management - Execute reference runs - Update reference images - Handle reference versioning ### Visual Comparison - Execute test runs against references - Analyze visual diff reports - Configure diff thresholds ### Interaction Handling - Configure click and hover interactions - Handle scroll positions - Implement wait conditions - Execute custom scripts before capture ### Report Generation - Generate HTML comparison reports - CI-friendly report formats - History tracking ### Engine Configuration - Configure Puppeteer engine settings - Chrome launch options - Network request handling ## Target Processes - `visual-regression.js` - Visual regression testing - `e2e-test-suite.js` - E2E with visual validation ## Dependencies - `backstopjs` - Visual regression tool - Puppeteer (bundled) - Doc
- Overview
- Capabilities
- Scenario Configuration
- Reference Management
- Visual Comparison
- Interaction Handling
- Report Generation
- Engine Configuration
- Target Processes
- Dependencies
- Usage Example
- Configuration
What does the BackstopJS Visual Testing skill do?
BackstopJS visual regression testing for self-hosted visual comparison
How do I install it?
Run `npx skills add a5c-ai/babysitter --skill backstopjs-visual --agent claude-code` — it drops the skill into your project so the agent can pick it up. Swap the --agent value for codex, cursor or copilot if you use one of those.
Where does this skill come from?
From a5c-ai/babysitter, a repository with 1,642 stars. We read it straight from the repository tree rather than a submitted listing, so what you see here is what is actually published.
Is a popular skill a good skill?
Not necessarily. Stars measure attention, not adoption — a repository can trend for a week and be abandoned. That is why we show the weekly change from our own snapshots next to the total, instead of a single flattering number.