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Component Inventory Audits for Outsourced Website Production

How to inventory reusable website components, states, owners, accessibility behavior, and evidence before approving a handoff.

Component Inventory Audits for Outsourced Website Production editorial illustration

A component inventory turns a design system into something a reviewer can inspect. Each entry should show purpose, states, inputs, responsive behavior, accessibility expectations, examples, and the owner of future changes.

Key Stats

  • WCAG 2.2 has 4 principles (W3C)
  • CSS has 5 generic font families (W3C)
  • Core Web Vitals has 3 metrics (web.dev)

    • Key Takeaways

  • Inventory behavior, not only screenshots.
  • Tie each component to examples and acceptance checks.
  • Record exceptions rather than hiding one-off variants.

    • Methodology

    The source set supplies formal references for accessibility, CSS, performance, and structured data. The inventory model is a practical interpretation for outsourced web production.

    Inventory fields

    Record name, purpose, anatomy, content limits, states, inputs, responsive behavior, keyboard behavior, focus treatment, contrast expectation, example routes, code or design location, version, owner, and review status.

    Audit evidence

    Review the component in at least one real page and one edge state. Confirm text expansion, focus movement, error handling, image behavior, and mobile layout. Link findings to the component entry so later changes remain traceable.

    Sources

    1. W3C WCAG 2.2 Accessibility requirements.

    2. W3C ARIA Authoring Practices Widget patterns and keyboard behavior.

    3. W3C CSS Fonts Font-family reference.

    4. Google Core Web Vitals Performance metrics.

    5. Schema.org Structured-data vocabulary.

    6. MDN CSS reference CSS implementation reference.

    7. Google Search Central SEO starter guide Page organization guidance.

    8. OWASP ASVS Security verification.

    9. NIST least privilege Access principle.

    10. Sitemaps protocol Site discovery reference.

    Further reading

    Component governance

    Design tokens

    Related Research

    Accessibility review

    Design review protocol

    Performance handoff

    Frequently asked questions

    Is a design screenshot a component specification?

    No. It usually omits states, inputs, responsive behavior, and accessibility interaction.

    Who should maintain the inventory?

    Assign an owner inside the company and require the external team to update the evidence with each accepted change.

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