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Robots.txt Tester & Analyzer

Paste your robots.txt to validate the syntax, see each crawler's rules, and catch mistakes that quietly block your pages — free, no signup.

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Crawler groups: 0
Rules: 0
Sitemaps: 0
Issues: 0

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What is robots.txt?

robots.txt is a plain-text file that lives at the root of your site — https://yoursite.com/robots.txt — and tells search-engine crawlers which parts of the site they may or may not request. It uses a simple set of directives: User-agent to name a crawler, Disallow and Allow to control paths, and Sitemap to point to your XML sitemap. A single typo here can accidentally hide your whole site from Google, so it's worth checking.

What this analyzer checks

How to use it

1

Paste your file

Copy the contents of your live robots.txt (or a draft) into the box.

2

Analyze

The tool parses it instantly and groups the rules by crawler, with a list of issues to review.

3

Fix & re-test

Correct anything flagged, paste again to confirm, then verify in Google Search Console's robots.txt report.

Common robots.txt mistakes

Blocking what you want indexed. Disallow: / under User-agent: * hides everything — a frequent accident after a site migration. Using Disallow to deindex. Disallow stops crawling but a blocked URL can still appear in results without a snippet; use a noindex tag for true removal. Forgetting the sitemap. Adding Sitemap: helps crawlers discover your URLs faster.

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