网站面包屑导航设计 Skill

Components: Breadcrumb Navigation

Guides breadcrumb implementation for SEO, UX, and GEO. Breadcrumbs show users their location in the site hierarchy and help search engines understand content taxonomy. Well-implemented breadcrumbs can increase CTR by 20–30%, reduce bounce rates by up to 30%, and strengthen internal linking.

When invoking: On first use, if helpful, open with 1–2 sentences on what this skill covers and why it matters, then provide the main output. On subsequent use or when the user asks to skip, go directly to the main output.

Scope

• Breadcrumb UI: Visual trail (Home > Category > Page)
• BreadcrumbList schema: JSON-LD structured data for rich results
• Placement: Typically below header, above main content

Breadcrumb Types

Type	Use case	Recommendation
Location-based	Reflects site hierarchy (Home > Blog > SEO > Page)	Recommended — most SEO-friendly; clear structure
Attribute-based	Shows product attributes (Home > Electronics > Phone > iPhone 15)	E-commerce; product classification
Path-based	Shows user's browsing path	Avoid — different users, different paths; can cause confusion

Default: Use location-based for most sites. Use attribute-based for e-commerce product pages.

Initial Assessment

Check for project context first: If .claude/project-context.md or .cursor/project-context.md exists, read it for site structure and key pages.

Identify:

1. Site structure: Hierarchy depth (e.g., Home > Category > Subcategory > Product)
2. Page types: Blog, e-commerce, docs, etc.
3. Multi-category: Products in multiple categories—need canonical path

Best Practices

Structure & Hierarchy

Practice	Guideline
Depth	3–5 levels optimal; avoid very long trails
Anchor text	Keyword-rich, human-readable; descriptive
Consistency	Same pattern across all pages (blog, category, product)
Canonical path	For items in multiple categories, define one canonical breadcrumb to avoid diluted link equity

Schema (BreadcrumbList)

See schema-markup for BreadcrumbList requirements, JSON-LD example, and multiple paths. Schema must match visible breadcrumbs exactly.

Placement & Design

Practice	Guideline
Position	Below nav bar or above page title; top of content area
Visual	Smaller font, lighter color; avoid competing with main content
Separator	Clear separator (>, /, ›); consistent across site
Naming	Match page title or nav menu; concise, descriptive

UX & Accessibility

Practice	Guideline
Mobile	Tappable; short, readable text; high contrast
Long trails	Horizontal scroll container rather than truncating
Current page	Last item non-linked; use aria-current="page"
Screen readers	nav with aria-label="Breadcrumb"; proper landmark

SEO Impact

• Internal linking: Breadcrumbs distribute link equity
• Crawlability: Helps crawlers understand taxonomy
• GEO: BreadcrumbList appears frequently on pages cited by Google AI Mode
• Note: Google removed visual breadcrumbs from mobile SERPs (Jan 2025) to save space, but schema and algorithmic value remain important for crawlers and AI. See serp-features for breadcrumb SERP display.

Implementation

Semantic HTML

<nav aria-label="Breadcrumb">
  <ol itemscope itemtype="https://schema.org/BreadcrumbList">
    <li itemprop="itemListElement" itemscope itemtype="https://schema.org/ListItem">
      <a itemprop="item" href="https://example.com/"><span itemprop="name">Home</span></a>
      <meta itemprop="position" content="1" />
    </li>
    <li itemprop="itemListElement" itemscope itemtype="https://schema.org/ListItem">
      <a itemprop="item" href="https://example.com/category/"><span itemprop="name">Category</span></a>
      <meta itemprop="position" content="2" />
    </li>
    <li itemprop="itemListElement" itemscope itemtype="https://schema.org/ListItem" aria-current="page">
      <span itemprop="name">Current Page</span>
      <meta itemprop="position" content="3" />
    </li>
  </ol>
</nav>

Implementation: Generate BreadcrumbList from route segments or page metadata. Ensure item URLs are absolute. Use next-seo BreadcrumbJsonLd or custom component. See schema-markup for JSON-LD structure.

When to Use Breadcrumbs

Site type	Use case
E-commerce	Category > Subcategory > Product
Blog	Home > Blog > Category > Post (see article-page-generator for article page structure)
Docs	Home > Docs > Section > Page
Large sites	Any site with 3+ level hierarchy

Skip on flat sites (e.g., single-page, 1–2 level depth).

Deep pages: For 6+ levels, consider omitting middle levels; show only the most important categories to avoid clutter.

Platform Notes

Platform	Options
WordPress	Yoast SEO, Rank Math, Breadcrumb NavXT
Next.js	next-seo BreadcrumbJsonLd, custom from route segments
Shopify, Drupal, Joomla	Built-in or plugin support

Common Errors

Error	Fix
Relative URLs in schema	Use absolute URLs (https://)
Schema doesn't match visible trail	Keep schema and UI in sync
Missing position	Include sequential position (1, 2, 3…)
Last item linked	Current page typically not a link
Too many levels	Limit to 5–7; omit middle levels for deep paths
Inaccurate path	Breadcrumb must reflect actual site structure
No schema	Add BreadcrumbList per schema-markup; otherwise no SERP breadcrumbs; see serp-features

Output Format

• Structure recommendation (levels, labels)
• BreadcrumbList JSON-LD — see schema-markup for structure; with absolute URLs
• HTML structure (semantic, accessible)
• Placement (below header, above main)
• Validation: Rich Results Test, Schema Markup Validator, Search Console enhanced report

Related Skills

• article-page-generator: Article pages use breadcrumbs (Home > Blog > Category > Post)
• schema-markup: BreadcrumbList schema implementation; JSON-LD structure, requirements
• navigation-menu-generator: Header nav; breadcrumbs complement primary nav
• internal-links: Breadcrumbs are internal links; distribute link equity
• site-crawlability: Breadcrumbs help crawlers understand structure
• category-page-generator: Category hierarchy in breadcrumbs
• products-page-generator: Product pages often need breadcrumbs (Category > Product)
• serp-features: Breadcrumb SERP display; rich results