bjornmelin/web-lottie
plugins/web-motion/skills/web-lottie/SKILL.md
Use this skill for lottie-web, dotLottie web components, animation JSON/dotLottie assets, player lifecycle, cleanup, renderer choice, accessibility, and asset validation. Trigger on lottie-web, dotLottie, .lottie, Lottie JSON, After Effects animation, Bodymovin. Do not use for near-miss tasks outside these boundaries; route to adjacent motion or platform skills when they own the implementation.
$ install --global
skillsauthnpx skillsauth add bjornmelin/dev-skills web-lottieInstall this skill globally with one command. Works with Claude Code, Cursor, and Windsurf.
Security Scan Results
3 of 9 scanners reported clean
Some scanners were skipped, did not run, or reported a non-clean status. Review each row below.
3
Scanners Passed
9
Scanners in report
Clean
TrivyContainer and dependency vulnerability scanner
95%
Clean
SemgrepStatic code analysis for vulnerabilities
95%
Clean
mcp-scan (Snyk)Model Context Protocol security validation
95%
Skipped
Snyk (dep)Open source security scanning
50%
Skipped
Socket.devSupply chain security analysis
50%
Skipped
VirusTotalMulti-engine malware detection
50%
Skipped
CrowdStrikeAdvanced threat intelligence
50%
Skipped
OSV-ScannerOpen Source Vulnerability database check
50%
Skipped
OWASP Dep-Check
50%
Last scanned: Jun 10, 2026, 3:28 AM93.0s4 files scanned
SKILL.md
- name:
- web-lottie
- description:
- >-
- license:
- MIT
Web Lottie
lottie-web, dotLottie web components, animation JSON/dotLottie assets, player lifecycle, cleanup, renderer choice, accessibility, and asset validation.
Operating Contract
Use this skill as a compact router plus domain checklist. Load references only when the current task matches their condition. Do not cite local scrape paths, machine cache paths, or hidden source locations. Verify API details against the target repo's installed package versions before editing.
Source Order
- Inspect the target repo's installed packages, framework/runtime versions, local design tokens, accessibility policy, and existing motion patterns.
- Use the bundled references below for skill-specific gotchas and copied source excerpts.
- Use official current docs/package source as API truth when local code or bundled notes are version-sensitive.
Decision Boundaries
- Use native-lottie for React Native.
- Use Rive for interactive state machines.
- Use CSS/WAAPI for simple UI motion that does not need designer-authored assets.
Workflow
- Inspect asset format, player package, renderer, autoplay/loop, and hosting path.
- Create and destroy player instances at the owner boundary.
- Respect reduced motion and provide non-canvas semantics.
- Validate asset size, remote URLs, and event listeners.
Gotchas
- Canvas-rendered animation needs external accessible text or labels.
- Remote animation URLs need CSP/cache/security review.
- Looping/autoplay assets require reduced-motion and pause behavior.
Bundled Resources
references/lottie-player-lifecycle.md- lottie-web player lifecycle. Read when creating, updating, or destroying lottie-web animation instances.references/dotlottie-web-component.md- dotLottie web component and worker notes. Read when using .lottie assets, dotLottie players, workers, or web components.references/asset-accessibility-security.md- Asset accessibility and security review. Read before accepting remote assets, canvas-only output, autoplay loops, or URL actions.references/authoring-and-export-compatibility.md- Authoring and export compatibility. Read when accepting designer-authored Lottie JSON/dotLottie assets or debugging mismatch between After Effects preview and runtime output.references/runtime-event-contracts.md- Runtime events, markers, and playback contracts. Read when code controls Lottie playback, segments, markers, events, or synchronization with app state.references/docs-dotlottie-web.md- Copied source excerpt. Load only when exact upstream wording or API detail is needed.references/docs-lottie-web-load-animation-options.md- Copied source excerpt. Load only when exact upstream wording or API detail is needed.references/docs-lottie-web-readme.md- Copied source excerpt. Load only when exact upstream wording or API detail is needed.references/implementation-notes.md- Copied source excerpt. Load only when exact upstream wording or API detail is needed.references/index.md- Complete reference inventory and routing summary.references/source-ledger.md- Source list, checked date, and copy policy.references/provenance.json- Machine-readable source and local-resource metadata.scripts/audit.mjs- Self-contained audit CLI; rundoctorbeforescanwhen setup is unclear.assets/templates/web-lottie-audit-report.md- Audit response/report template.assets/templates/web-lottie-review-checklist.md- Manual review checklist.assets/examples/web-lottie-starter.tsx- Starter fixture/example for this skill.evals/trigger-queries.json- Trigger/near-miss eval set for description tuning.evals/evals.json- Task-quality evals with assertions.
Audit CLI
node scripts/audit.mjs doctor --root . --format json
node scripts/audit.mjs scan --root . --format markdown
node scripts/audit.mjs scan --root . --format json --output web-lottie-audit.json
Treat script findings as leads. Verify every finding against current code before changing behavior or reporting it as valid.
Closeout
Before finalizing, run the repo's focused validation command, this skill's audit CLI when relevant, and any browser/device/manual proof required by the changed surface. Report commands run, findings fixed, findings skipped with reasons, and residual risk.
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