Discover how Spider.es helps you audit crawler access, diagnose technical SEO issues and manage the new wave of AI bots.
Pick a topic to scroll straight to the answer.
Spider.es maintains a curated, categorised directory of crawlers. From headline search engines and AI LLM bots to SEO auditors, social platforms, security services and research scrapers, you know exactly who is hitting your site and why that matters.
Here's a snapshot of the ecosystems Spider.es monitors to help you stay in control of crawlability, security and performance.
Turn every report into a checklist that keeps search engines focused on your most valuable content.
Watch for these warning signs before they erode organic traffic:
Spider.es inspects robots.txt, meta robots tags and X-Robots-Tag headers side by side to show which bots can crawl, who is blocked and the reason behind each outcome.
Robots.txt stops compliant bots before a URL is fetched. Because it is public, treat it as guidance for well-behaved crawlers, not a security barrier, and pair it with meta and header directives for finer control.
Meta robots tags live in HTML, while X-Robots-Tag headers apply to any file type. Combined, they control indexing behaviour for pages and assets that make it past the crawl gate.
AI crawlers can consume bandwidth, reuse proprietary content or spark legal debates. Blocking them in robots.txt or response headers makes your policy explicit and protects your data.
It's appropriate to block private areas, staging sites, duplicate content or aggressive scrapers. Pair disallow rules with noindex where necessary and maintain a whitelist for the bots you rely on.