nnasa.gov

The file contains no "Sitemap:" line.

Consequence. Crawlers have to discover every URL by following links. Pages that are deep, newly published, or poorly linked internally take longer to be found, and some may never be. A sitemap is the most direct way to hand a crawler the full list.

If that is not intended. Publish an XML sitemap and declare it with an absolute URL, e.g. "Sitemap: https://example.com/sitemap.xml". The line is global — it belongs outside any User-agent group and applies to every crawler.

The file declares user agents but no effective Disallow rule.

Consequence. Every URL is crawlable, including any that exist only for internal use. Crawl budget is spent evenly rather than on pages worth ranking.

If that is not intended. Consider disallowing sections with no search value — internal search results, faceted or parameterised URLs, cart and account pages.

Crawl-delay was never part of the standard. Google has never supported it; Bing and Yandex do.

Consequence. Any rate limit intended for Googlebot is not being applied. If the goal was to reduce load from Google specifically, it is not working.

If that is not intended. Set the crawl rate for Google in Search Console instead. Keep the directive if the limit is meant for Bing or Yandex, which do honour it.

• Crawl-delay: 1L2

All 6 checked search engines are allowed at the site root.

All 4 checked AI answer engines are allowed at the site root.

All 3 checked user-triggered AI fetches are allowed at the site root.

All 5 checked social link previews are allowed at the site root.

All 6 checked AI training crawlers are allowed at the site root.

1 meta tag and 0 X-Robots-Tag headers, with no contradictions.

• <meta name="robots" content="follow, index, max-snippet:-1, max-video-preview:-1, max-image-preview:large">Page HTML

Every line parses as a directive crawlers understand.

Comfortably within the 500 KB that crawlers will read.