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XML sitemap exists and is valid

ab-002511 · seo-fundamentals.discoverability.sitemap-exists
Severity: highactive

Why it matters

A sitemap gives Googlebot, Bingbot, and AI crawlers an explicit inventory of every URL you want indexed along with each page's last-modified timestamp. Without one, discovery relies entirely on internal linking — which fails for deep routes, newly published pages, and orphaned content. On a new site the sitemap is often the difference between a week and two months before the first crawl. It also speeds reindexing: updating lastModified on a page prompts the crawler to revisit, bypassing the standard rediscovery delay.

Severity rationale

High because missing sitemaps directly delay indexing of new pages and block efficient recrawling on established sites.

Remediation

In Next.js App Router, export a sitemap() function from app/sitemap.ts. Iterate your routes programmatically from your CMS or filesystem — do not hand-maintain the list.

// app/sitemap.ts
export default function sitemap() {
  return [
    { url: 'https://yoursite.com', lastModified: new Date() },
    { url: 'https://yoursite.com/about', lastModified: new Date() },
  ]
}

For other frameworks, generate a static public/sitemap.xml during build. Submit the URL in Google Search Console once to confirm parsing.

Detection

  • ID: seo-fundamentals.discoverability.sitemap-exists

  • Severity: high

  • What to look for: Check for public/sitemap.xml (static) or a route that generates the sitemap (e.g., app/sitemap.ts or app/sitemap.xml/route.ts in Next.js). Verify the sitemap contains URLs in valid XML format.

  • Pass criteria: A sitemap file exists (static or generated) containing valid XML with at least 1 <url> entry. Count the number of <url> entries in the sitemap. The entry count should be no fewer than the number of public page routes in the project.

  • Fail criteria: No sitemap.xml found, or the sitemap exists but contains 0 URL entries or invalid XML. Report: "Sitemap has X URLs but project has Y public routes."

  • Skip (N/A) when: Never — every public web project benefits from a sitemap.

  • Detail on fail: "No sitemap.xml found in public/ directory or as a generated route" or "sitemap.xml exists but contains no URL entries"

  • Remediation: An XML sitemap helps search engines discover all your pages. In Next.js App Router, create a dynamic sitemap:

    // app/sitemap.ts
export default function sitemap() {
  return [
    { url: 'https://yoursite.com', lastModified: new Date() },
    { url: 'https://yoursite.com/about', lastModified: new Date() },
    // ... all your pages
  ]
}

    Or create a static public/sitemap.xml with your pages listed in standard sitemap XML format.

Taxons

findability

History