Free technical SEO tool

Robots.txt Tester for crawl-rule clarity

Test robots.txt rules, check crawler access, and find blocked URLs or resources before they affect crawlability. Review directives for Googlebot, Bingbot, generic crawlers, or custom user agents.

Live

robots.txt fetch

user-agent modes

CSS/JS

resource checks

Robots.txt Tester

Fetch robots.txt and test crawl-discovered URLs and key resources for blocking risks.

We’ll fetch /robots.txt and test a sample of discovered URLs (crawl + optional sitemaps).

Detection settings

User-agent

Rules may differ by user-agent section.

Discovery limit

Higher limits may take longer.

Include sitemap URLs

If sitemaps are present in robots.txt.

Check CSS/JS resources

Flags render risk when resources are disallowed.

Optional crawl handling preferences are available here.

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What it checks

Focused crawl-rule validation

Use the Robots.txt Tester to understand how live directives affect crawler access, sitemap discovery, blocked paths, and rendering resources.

Use it during internal linking audits, content optimisation, technical SEO reviews, website migrations and content hub planning.

Live file

Fetch live robots.txt

Check whether the robots.txt file is available and can be fetched from the live site.

User agents

Test crawler-specific rules

Review rule groups for Googlebot, Bingbot, Generic *, or a custom user agent.

Rules

Review Allow and Disallow

See how Allow and Disallow directives affect specific pages, folders, assets, or endpoints.

Resources

Check CSS and JS blocks

Find blocked CSS or JavaScript resources that may affect rendering and page evaluation.

Why it matters

One broad rule can block an entire SEO path.

Robots.txt is useful for controlling crawl access, but incorrect directives can create crawlability problems. Testing rules before and after deployment keeps audits, migrations, launch QA, and developer handoff safer.

Prevent crawlability mistakes

Check whether important pages or folders are blocked before they affect organic visibility.

Validate robots.txt changes

Test rules before or after deployment to reduce launch, migration, and template-update risk.

Improve developer handoff

Prepare matched rules, blocked URLs, and risk context so developers can update robots.txt accurately.

How it works

From input to crawl clarity

Set up the check in a few clicks, then review the parsed robots.txt findings inside your Wranker results workflow.

Enter a live domain or URL

Add the website, page, folder, asset, or endpoint you want to test.

Choose the user agent

Select Googlebot, Bingbot, Generic *, or a custom user agent.

Run the check

Wranker fetches and parses the live robots.txt file.

Review results in Wranker

Check matched rules, risk level, blocked pages, blocked resources, and report options.

When to use it

Practical workflows for technical teams

Use the tool during audits, launches, migrations, indexation checks, rendering reviews, and developer handoff.

Technical SEO audit

Review robots.txt rules and blocked URLs as part of a focused technical audit.

Website launch QA

Confirm important pages and resources are not accidentally blocked before the site goes live.

Migration review

Check whether old, staging, or legacy rules are still blocking live URLs.

Developer handoff

Export matched rules, risk flags, and blocked resources for safer implementation.

Related Wranker tools

Continue the technical SEO workflow

Pair robots.txt testing with crawlability, sitemap, indexability, page health, and reporting tools.

Open

Site Audit Tool

Run a broader technical SEO audit across crawlability, indexability, and page health.

Open

Crawlability Checker

Review crawler access signals beyond a single robots.txt rule set.

Open

Indexability Checker

Check whether important pages can be indexed after crawl access is validated.

Open

Sitemap Checker

Validate sitemap references and discovery signals for search crawlers.

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FAQ

Robots.txt Tester questions

Clear answers for SEO teams, developers, marketers, and agencies using robots.txt testing as part of technical SEO QA.

A Robots.txt Tester checks robots.txt rules and helps you understand whether specific URLs, folders, or resources are allowed or blocked for crawlers.

Yes. The tool is designed to check live domains and live URLs. It should not be described as scanning staging, private, or password-protected URLs unless that functionality is confirmed.

Robots.txt is used to give crawl instructions to search engine bots and other crawlers.

Robots.txt blocks crawling, not indexing directly. If a blocked URL is discovered through links, it may still appear in search in limited cases.

Disallow tells a crawler not to crawl a specific path or URL pattern.

Allow can permit crawling of a specific path, often inside a broader disallowed folder.

Yes. The tool can test access for Googlebot, Bingbot, Generic *, and custom user agents.

Blocked CSS or JavaScript can affect how search engines render and understand a page.

Yes. Use Download Report when you need to share robots.txt findings with developers, clients, or SEO reviewers.

No. This tool focuses on robots.txt testing. For a complete technical audit, use Wranker’s Site Audit Tool.

Crawlability QA

Test your robots.txt rules before they block SEO

Enter a live domain or URL to review robots.txt rules, blocked URLs, blocked resources, sitemap directives, and user-agent access.

Use the results for crawlability QA, technical SEO audits, migrations, launch reviews, and developer handoff.

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