Robots txt Analyzer

Our free robots txt analyzer checks your robots.txt file and tells you exactly what search engine bots can and cannot access on your website. Paste a URL or your file content and get a full breakdown in seconds. No login needed.

Most website owners set up their robots.txt file once and never look at it again. But a single wrong directive can block Googlebot from crawling your most important pages. You won’t get an alert. Traffic just quietly drops.

This tool helps you catch those problems before they affect your search rankings.

What Does This Robots txt Analyzer Tool Do?

The robots txt analyzer fetches or reads your robots.txt file and runs a complete analysis. It does not just count your rules. It tells you what each rule actually means, which bots are affected, and whether your configuration could be hurting your SEO.

The robots.txt file follows the Robots Exclusion Protocol, a web standard used since 1994. According to Google Search Central, misconfigured robots.txt files are one of the most common technical SEO issues found during site audits.

You can also check any related HTTP header issues on your site using our HTTP Header Checker tool.

Features of our Robots txt Validator Tool

Crawlability Score
The tool gives your robots.txt file a score out of 100. The score is based on errors found, bots blocked, missing sitemap declarations, and rule quality. It gives you a fast read on how well your file is configured.

Bot Access Analysis Table
See every bot named in your file, the company behind it, its type (search crawler, SEO tool, AI crawler, social bot), and its current access status — fully allowed, partially restricted, or fully blocked. The table flags SEO-critical bots like Googlebot and Bingbot so you know which access issues matter most.

URL Crawlability Tester
Enter any URL path and select a bot. The tool tells you instantly whether that path is crawlable or blocked for that specific bot, shows you which rule matched, and explains why. This is the most practical feature for diagnosing real crawl issues.

Plain-English Rule Explanations
Every disallow and allow directive in your file is shown with a plain-English explanation of what it actually does. Wildcard patterns using * or end-anchor $ characters are explained clearly, not just displayed.

SEO Impact Detection
The tool checks for rules that block CSS or JavaScript files, which prevents Google from rendering your pages properly. It also flags restrictions on important content paths like /blog/, /product/, or /category/ when those restrictions apply to SEO-critical bots.

Sitemap Validation
Declared sitemap URLs are checked for valid format and HTTPS usage. The tool warns you if a sitemap URL uses HTTP instead of HTTPS. Speaking of HTTPS, if you want to confirm your site’s SSL certificate is properly configured, you can verify your SSL certificate using our free SSL Certificate Checker.

Error and Warning Reports
Critical errors are separated from warnings. Errors need immediate attention. Warnings are potential problems worth reviewing. Each message includes the relevant line number from your file.

Raw File View
The original robots.txt content is shown at the bottom so you can compare what the file says versus what the analysis found.

How to Use the Robots txt Analyzer

Step 1 – Choose your input method
Select the Fetch by URL tab to let the tool retrieve your robots.txt automatically. Or select the Paste Content tab to test a file manually before uploading it live.

Step 2 – Enter your URL or paste your content
For URL input, enter your full domain like https://example.com. The tool finds and fetches the robots.txt file from your root directory. For content input, paste your full robots.txt text into the box.

Step 3 – Click Analyze Robots.txt
The tool processes your file and returns a full report within seconds.

Step 4 – Review the crawlability score and bot access table
Start with the score to understand the overall health of your file. Then check the bot access table to see which crawlers are restricted and whether any SEO-critical bots are fully blocked.

Step 5 – Use the URL tester for specific paths
Type in a path like /blog/ or /wp-admin/ and pick a bot from the dropdown. The tool tells you whether that path is crawlable and exactly which rule applies.

Step 6 – Fix issues and retest
Edit your robots.txt file based on the results. Paste the updated version into the Paste Content tab and run the analysis again to confirm the changes work as intended before going live.

Frequently Asked Questions

What is a robots.txt file and why does it matter?
A robots.txt file is a plain text file stored in the root directory of your website. It tells search engine crawlers which pages or sections they should not visit. Search engines like Google and Bing read this file before crawling your site. A misconfigured file can block important pages from being indexed, which directly affects your visibility in search results.

Why is Googlebot blocked on my site?
The most common reason is a Disallow: / rule under User-agent: Googlebot or User-agent: *. This tells Google’s crawler to avoid your entire site. It can happen accidentally during a site migration or CMS update. Run the robots txt checker to confirm whether Googlebot is blocked and which rule is responsible.

What does Disallow: / mean in robots.txt?
It means the bot is blocked from every page on your website. When applied to the wildcard user-agent *, it blocks all search engines from crawling anything. This is one of the most damaging mistakes you can make in a robots.txt file.

Can blocking CSS and JavaScript files hurt my SEO?
Yes. Google needs to render your pages to understand their content. If your robots.txt blocks CSS or JavaScript files, Googlebot cannot fully render your pages. This can cause your pages to appear poorly in search results or rank lower than they should. The tool flags these resource blocks as warnings.

What is a crawlability score?
The crawlability score is a number out of 100 that reflects how well your robots.txt file is configured from an SEO perspective. It accounts for errors, warnings, blocked SEO-critical bots, missing sitemaps, and rule quality. A high score means your file is well set up. A low score means there are issues that need fixing.

Does robots.txt stop pages from appearing in Google search results?
Not directly. Robots.txt controls crawling, not indexing. If a page was already indexed before you added a disallow rule, it may still appear in search results. To remove an already indexed page from Google, use the noindex meta tag or the URL removal tool in Google Search Console.

What is the URL tester and when should I use it?
The URL tester lets you enter a specific path and select a bot to check whether that path is crawlable or blocked according to your robots.txt rules. Use it when you are unsure whether a particular page is accessible to a specific crawler, especially when your file contains wildcard patterns that are hard to trace manually.

How often should I check my robots.txt file?
Check it whenever you make structural changes to your site, add new sections, update your CMS, or run a technical SEO audit. A quick check every few months is also good practice to catch anything that may have changed unintentionally during updates or migrations.

What is the difference between robots.txt and the noindex tag?
Robots.txt tells crawlers which URLs to visit or skip. The noindex meta tag tells search engines not to include a page in their index. A page blocked in robots.txt can still appear in search results if other sites link to it. For full control over whether a page appears in search results, use the noindex tag on the page itself.

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Disclaimer: Results from this tool are provided for informational purposes only. While we strive for accuracy, we cannot guarantee that every result is complete or error-free. Always verify important findings using additional methods before making security, technical, or business decisions.