--- title: "Robots.txt Tester & Validator - Check Crawler Access | Free Tool by Snezzi" canonical: https://snezzi.com/tools/robots-txt-tester/ source: https://snezzi.com/tools/robots-txt-tester/ --- > Canonical page: https://snezzi.com/tools/robots-txt-tester/ Robots.txt Validation # Test Your Robots.txt Paste your robots.txt, pick a crawler including AI bots like GPTBot and ClaudeBot, and instantly check whether any path is allowed or blocked. No signup required Instant results 100% Free Fetch from your domain We will load this site's live robots.txt for you. Paste your robots.txt content URL or path to test User-agent \* (all) Googlebot Bingbot GPTBot ClaudeBot PerplexityBot Google-Extended CCBot ### Validation Summary ### Errors Found ### Warnings ### Sitemaps Declared ### User-agent Groups ### Email me the test report Enter your name and work email to download the full robots.txt test report, including every rule, error, and verdict. The tester stays free. No spam. Just your export and the occasional useful tip. [Or: book a free strategy session β†’](/strategy-session/) ## How to read a robots.txt file A robots.txt file is a plain-text list of directives grouped under one or more User-agent lines. Each line is a directive followed by a colon and a value. Reading it top to bottom, you match the crawler you care about to its group, then apply that group's Allow and Disallow rules to the URL in question. These are the directives you will encounter: Directive Example What it does `User-agent` `User-agent: Googlebot` Names the crawler the rules below it apply to. An asterisk (\*) means the rules apply to every crawler that has no more specific group of its own. `Disallow` `Disallow: /admin/` Tells the group not to crawl any URL path that starts with this value. An empty Disallow value means nothing is blocked (full access). `Allow` `Allow: /admin/public/` Re-opens a path that a broader Disallow would otherwise block. When Allow and Disallow both match, the longer (more specific) rule wins. `Sitemap` `Sitemap: https://site.com/sitemap.xml` Points crawlers to your XML sitemap. It must be an absolute URL and is independent of any User-agent group. `Crawl-delay` `Crawl-delay: 10` Requests a pause (in seconds) between requests to ease server load. Bing and some bots honor it; Googlebot ignores it and uses crawl-rate settings instead. Directives are case-insensitive but path values are case-sensitive, and wildcards (`*` to match any characters, `$` to anchor the end of a URL) are supported by most modern crawlers. Paste a file above to see each group, rule, and verdict parsed out for you. Copied to clipboard! ## Want this done for you? Snezzi is a done-for-you AI SEO agency. We get your brand cited and ranked across ChatGPT, Perplexity, Google AI, and search, so you show up where your buyers now ask. [Book Free Strategy Session](/strategy-session/) [See how many leads you can generate with AI.](/ai-audit/) ## Other Free Tools Explore more tools from Snezzi [ πŸ€– Robots.txt Generator Generate robots.txt with AI crawler rules ](/tools/robots-txt-generator/)[ πŸ—ΊοΈ Sitemap Checker Validate your XML sitemap for errors ](/tools/sitemap-checker/)[ πŸ“œ llms.txt Generator Create an llms.txt for AI crawlers ](/tools/llms-txt-generator/) ## Robots.txt Tester FAQ Common questions about this tool A robots.txt file lives at the root of your domain and tells web crawlers which parts of your site they may or may not request. It uses User-agent groups with Allow and Disallow rules, plus optional Sitemap and Crawl-delay directives. It is a voluntary standard, so well-behaved crawlers respect it, but it does not enforce access control. AI crawlers such as OpenAI's GPTBot, Anthropic's ClaudeBot, PerplexityBot, Common Crawl's CCBot, and Google-Extended read robots.txt to decide what content they may fetch for training or answer generation. To allow or block them you add a User-agent group naming the specific bot. Blocking GPTBot, for example, keeps your pages out of that crawler's data collection. Google and most modern crawlers use the longest-match-wins rule: the rule whose path matches the most characters of the requested URL takes precedence. If an Allow rule and a Disallow rule match with the exact same path length, the Allow rule wins. This lets you block a folder with Disallow while re-opening a specific file inside it with a more specific Allow. No. Disallow only stops compliant crawlers from fetching the page content; it does not remove an already indexed URL, and a blocked URL can still appear in results from external links. To keep a page out of the index, allow crawling and use a noindex meta tag or X-Robots-Tag header, or remove the page entirely. Robots.txt is used to manage crawler traffic to your site and tell search engines and other bots which URLs they can access. Site owners use it to keep low-value or duplicate areas (such as admin panels, internal search results, or faceted URLs) out of crawling, to point crawlers to the sitemap, and increasingly to allow or block AI crawlers. It is a crawl-management tool, not an access-control or indexing tool. 'Blocked by robots.txt' means a crawler wanted to fetch a URL but a Disallow rule in your robots.txt file told it not to, so it skipped the request. In Google Search Console this status shows that Google saw the URL but did not crawl its content because of your rules. If the block is unintended, edit or remove the matching Disallow line; if it is intended for a page you also want de-indexed, use noindex instead, since blocked pages can still be indexed from external links. Yes, for the crawlers that choose to follow it. Robots.txt is a voluntary standard, so reputable bots like Googlebot, Bingbot, and major AI crawlers honor it, but malicious scrapers can ignore it entirely. It reliably controls crawling for compliant bots, but it does not enforce anything and should not be relied on to hide sensitive data. Yes, robots.txt is safe and is a standard part of most websites. The one caution is that the file is public (anyone can read yoursite.com/robots.txt), so listing a secret path in a Disallow rule actually advertises its location. Use robots.txt to guide crawling, and protect truly sensitive URLs with authentication or a noindex directive rather than by disallowing them. Add /robots.txt to the end of the site's root domain and load it in a browser, for example https://example.com/robots.txt. If a text file with rules appears, the site has one; if you get a 404, it does not, which crawlers treat as full-access allowed. You can also paste the domain into the fetch box above to load and validate the live file instantly. ![Background](/background/cta_background.jpg) ### Ready to turn AI search into high-intent buyers? Our AI agents draft, audit, and track. Our editors review every output. Your team approves. ~60–90 min/week from your side. [Generate Leads Now](/strategy-session/) ![Snezzi](/favicon/favicon-16x16.png)