Robots.txt Tester & Checker for Better Crawl Control
Test your robots.txt file, validate crawler access, and check whether important pages or resources are blocked. Use this free Robots.txt Tester to review directives for Googlebot, Bingbot, and custom user agents before crawl or indexing issues affect SEO.
LIVE
Live Robots.txt Fetch
4
Crawler User Agents
CSS/JS
Blocked Resource Check
Enter the exact live website address, including the protocol and any subdomain.
Inspect Every Robots.txt Rule That Affects Crawling
See how robots.txt directives influence crawler behavior, file accessibility, sitemap discovery, resource loading, and search engine access before indexing begins.
Fetch the Live Robots.txt File
Retrieve the current robots.txt file directly from the live website to analyze its latest crawl directives.
Test Crawler-Specific Rules
Test the matching rule group for Googlebot, Bingbot, a generic crawler, or a custom user agent.
Check Allow & Disallow Directives
Identify pages, directories, and resources allowed or blocked for the selected crawler
Check CSS & JavaScript Access
Identify CSS and JavaScript files restricted by robots.txt that could impact rendering and page evaluation.
One Robots.txt Rule Can Affect Your Entire SEO Strategy.
A single robots.txt mistake can prevent search engines from crawling valuable pages, JavaScript, CSS, images, or entire website sections. A Robots.txt Tester helps verify crawl rules before launches, migrations, technical SEO audits, and website updates to reduce indexing risks and maintain consistent search visibility.
Prevent Crawl Blocking Issues
Identify blocked pages, folders, or resources before they reduce crawl efficiency or limit search engine visibility.
Verify Robots.txt Updates
Test new crawl rules before deployment to avoid indexing issues during website releases, migrations, or technical updates.
Share Clear Crawl Reports
Provide verified crawl rules and blocked URL insights so developers can resolve issues with confidence.
From Robots.txt Check to crawl clarity
Enter a website or URL, run the Robots.txt Tester, and review crawl rules, blocked paths, sitemap references, and crawler-specific results in just a few steps.
Enter a Domain or URL
Choose Domain Check for multiple URLs or Single URL Check for one URL.
Set the Crawler and Scope
Select the user agent, URL limit, sitemap option, and resource checks.
Run the Live Check
Wranker fetches the published robots.txt file and applies its rules.
Review the Results
See allowed or blocked URLs, matched rules, and resource warnings.
Use the Robots.txt Tester Across Every SEO Workflow
Use the Robots.txt Tester before technical SEO audits, website launches, migrations, indexing reviews, and developer updates to identify crawl issues before they affect search engine visibility.
Validate Crawl Rules
Review robots.txt rules and blocked URLs before starting a technical SEO audit.
Verify Pages Before Launch
Test a publicly accessible staging site, then recheck the live site after deployment
Check Crawl Rules After Migration
Identify outdated robots.txt directives that may still block important live URLs.
Share Verified Crawl Reports
Export crawl findings and blocked URL reports for faster developer implementation.
Continue From Crawl Access to Indexing Checks
After reviewing robots.txt access, validate sitemap health, inspect response headers, check index signals, and review page-level SEO.
SITEMAP QA
Sitemap Validator
Check sitemap access, redirects, canonical mismatches, and coverage gaps.
OpenRESPONSE QA
HTTP Header Checker
Review status codes, redirects, X-Robots-Tag directives, and response headers.
OpenINDEXABILITY QA
Google Index Checker
Check sampled Google index signals and common technical blockers.
OpenINDEXABILITY QA
Website SEO Analyzer
Review page-level metadata, links, indexability, schema, and technical SEO signals.
Robots.txt Tester Questions Answered
Find clear answers about robots.txt testing, crawl access, blocked URLs, Googlebot behavior, robots.txt validation, and technical SEO best practices before making website changes.
A Robots.txt Tester checks whether your robots.txt file allows or blocks search engine crawlers from accessing specific pages, folders, or resources. It helps identify crawl restrictions before they affect website indexing and organic visibility.
Enter your website URL or robots.txt file into a Robots.txt Tester, choose the user agent you want to simulate (such as Googlebot), and review which URLs are allowed or blocked. The results help verify that your crawl directives work as intended.
A robots.txt validator reviews the syntax, directives, Allow and Disallow rules, sitemap references, and crawler-specific instructions. It also detects configuration issues that may prevent search engines from crawling important pages.
Testing robots.txt before launch helps ensure that important pages, CSS, JavaScript files, and images remain accessible to search engines. This reduces the risk of accidentally blocking content that should be indexed after deployment.
Yes. Although robots.txt mainly controls crawling, blocking important URLs may prevent Google from properly discovering or processing pages. In some situations, blocked URLs may still appear in search results without complete indexing information.
A Robots.txt Tester validates the crawl rules inside your robots.txt file, while a Crawlability Checker analyzes whether search engines can actually access and crawl your website. Using both tools provides a more complete technical SEO review.
Most websites should test Googlebot, Bingbot, generic crawlers, and any custom user agents used for specific search engines or services. Comparing different user agents helps verify that each crawler receives the intended instructions.
Review your robots.txt file whenever you redesign your website, migrate URLs, update technical SEO settings, change your CMS, or modify crawl directives. Regular testing helps prevent unexpected crawl and indexing issues.
Yes. Many websites include a Sitemap directive inside robots.txt to help search engines locate XML sitemaps more efficiently. Validating both robots.txt and your sitemap improves crawl efficiency and website discovery.
Update the Allow and Disallow directives, save the revised robots.txt file, and test it again using a Robots.txt Tester before publishing. After deployment, verify that search engines can access the affected pages and resources correctly.
Validate Your Robots.txt Before Crawl Issues Affect SEO
Test your robots.txt file, validate crawler rules, review blocked URLs, verify sitemap directives, and confirm Googlebot or custom user-agent access before publishing website changes.
Use the report for technical SEO audits, website launches, migration QA, crawlability reviews, indexing checks, and developer implementation with confidence.