Sitemap lastmod
A declared resource modification time.
What Sitemap lastmod does not show
It is useful only when it reflects meaningful page changes rather than every build or request.
How CrawlCheck measures Sitemap lastmod
One finding code measures it. Its share of all scans is computed from the live corpus when this page is served, not typed into it.
| Finding code | Share of scans | Guide |
|---|---|---|
SITEMAP_NO_LASTMOD | 6.4% | How to audit an XML sitemap: status, content type, canonical URLs and stale entries |
Every code, its rule and its current rate: the dataset page. Scan a site to see which apply to it.
Where Sitemap lastmod comes up on this site
- Sitemap lastmod: 103 pages, one date, and why engines skip itA sitemap is a list of a site's pages, and the lastmod date beside each one tells a search engine or AI crawler which pages changed since it last looked.
Related terms in Crawling and indexing
How a crawler discovers, schedules, fetches and selects pages, and why a fetched page is not an indexed one.
Crawler identity · Product token · Identification string · Crawl frontier · Crawl queue · Crawl scheduler · Seed URL · URL discovery · Link extraction · Recrawl interval · Crawl frequency · Host politeness · Crawl rate · Crawl-delay · Robots group merging · Longest-match rule · Wildcard rule · End-anchor rule · Robots cache · Robots parse error · Robots redirect · Robots unavailable · Sitemap · Sitemap URL set · Sitemap hreflang · Image sitemap · Video sitemap · News sitemap · Canonical cluster · Duplicate cluster · Index selection · Crawl demand · Rendering queue · Rendered HTML · Indexing pipeline · Index freshness · Index lag · Deindexing · Removal request · URL inspection · Crawl anomaly · Bot spoofing · Shared IP range · Web Bot Auth
Questions about Sitemap lastmod
What is Sitemap lastmod?
A declared resource modification time.
What does Sitemap lastmod not show or guarantee?
It is useful only when it reflects meaningful page changes rather than every build or request.
How does CrawlCheck measure Sitemap lastmod?
Through the finding code SITEMAP_NO_LASTMOD, each with a stated rule, evidence bytes and a live share of scans on the dataset page.
Which area of the glossary does Sitemap lastmod belong to?
Crawling and indexing: How a crawler discovers, schedules, fetches and selects pages, and why a fetched page is not an indexed one.
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