Hugo is a wonderful tool to generate static web sites. Out of the box, it generates a sitemap.xml with all the generated pages in it. But, how to hide a page from sitemap.xml in Hugo? It is very easy, and the official documentation is clear.
Just create a custom sitemap.xml implementation in the following path:
layouts/_default/sitemap.xml
{{- printf "<?xml version=\"1.0\" encoding=\"utf-8\" standalone=\"yes\" ?>" | safeHTML }}
<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9"
xmlns:xhtml="http://www.w3.org/1999/xhtml">
{{- range .Data.Pages }}
{{- if not .Params.noSitemap }}
<url>
<loc>{{ .Permalink }}</loc>{{ if not .Lastmod.IsZero }}
<lastmod>{{ safeHTML ( .Lastmod.Format "2006-01-02T15:04:05-07:00" ) }}</lastmod>{{ end }}{{ with .Sitemap.ChangeFreq }}
<changefreq>{{ . }}</changefreq>{{ end }}{{ if ge .Sitemap.Priority 0.0 }}
<priority>{{ .Sitemap.Priority }}</priority>{{ end }}
{{- if .IsTranslated }}
{{- range .Translations }}
<xhtml:link rel="alternate" hreflang="{{ .Lang }}" href="{{ .Permalink }}" />
{{- end }}
<xhtml:link rel="alternate" hreflang="{{ .Lang }}" href="{{ .Permalink }}" />
{{- end }}
</url>
{{- end }}
{{- end }}
</urlset>
To hide a page from sitemap.xml, just add the noSitemap flag to the frontmatter of the page.
content/page.md
---
title: "Title"
noSitemap: true
---