Check Your robots.txt File for Crawl Blocks and Sitemap Signals
Enter your domain and get an instant robots.txt report. We check whether the file exists, whether key directives are present, and whether any rules look risky for search discoverability.
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What We Check
File existence, HTTP status, sitemap declarations, user-agent groups, and suspicious rules that may block important content.
Why It Matters
A single bad Disallow rule can suppress blog, docs, or product URLs from routine crawler discovery.
What To Do Next
Fix crawl directives first, then run a sitemap audit to see whether discoverability issues are already affecting live URLs.
What is a robots.txt checker?
A robots.txt checker fetches the rules search crawlers see first and explains whether those rules are helping or hurting discovery. The main job is to catch problems like a missing file, a site-wide disallow, blocked content sections, or a missing Sitemap directive before those issues turn into indexing gaps.
This matters because robots.txt affects crawl access, not just crawler behavior in theory. If key sections such as /blog, /docs, or /products are blocked for User-agent: *, you can quietly suppress important URLs from normal search discovery.
How this robots.txt validator works
1. Fetch the public file
The tool requests https://yourdomain.com/robots.txt, follows redirects, and records the final response URL and HTTP status.
2. Parse the directives
It extracts user-agent groups, Sitemap directives, Allow rules, Disallow rules, crawl-delay directives, and a sample of the file contents.
3. Flag risky patterns
Warnings are generated for high-risk setups such as a full site block, missing sitemap declarations, malformed lines, or blocked high-value sections.
4. Publish a shareable report
Each result gets a public URL so you can reference the current robots.txt state or compare it with a fresh check later.
Common robots.txt mistakes this tool helps catch
Blocking the whole site
User-agent: * with Disallow: / is useful only when that block is intentional. On a live marketing site it usually means discovery is being shut off entirely.
Forgetting the Sitemap directive
Search engines can still find your sitemap without it, but declaring it in robots.txt is a strong crawlability signal and a good baseline configuration.
Blocking content sections by accident
Directives aimed at staging, admin, or search pages sometimes grow too broad and end up blocking blog, docs, product, or resource sections as well.
Treating robots.txt as an indexing control
robots.txt controls crawling access. It is not a substitute for noindex on pages that are already discoverable elsewhere.
Frequently asked questions
What does this robots.txt checker test?
The checker fetches your robots.txt file, confirms it is publicly reachable, lists user-agent groups, finds Sitemap directives, counts Allow and Disallow rules, and flags risky patterns such as a full site block or missing sitemap declarations.
Why does robots.txt matter for SEO?
robots.txt influences what crawlers are allowed to fetch. A bad rule can block important sections like your blog, docs, or product pages and reduce discoverability in search.
Does this check replace a full site audit?
No. This tool is focused on robots.txt validation. Use the sitemap audit if you want broken links, missing metadata, and broader SEO checks across your site.
Related reading
Need more than a robots.txt check?
Use the sitemap audit to inspect live URLs for broken links, missing metadata, and other issues that impact technical SEO beyond crawl controls.