What are the benefits of Robots.txt Tester?

Shows how robots.txt rules apply to a specific crawler and path.. Makes rule conflicts and user-agent differences easier to validate.. Helps with SEO QA and pre-release crawler-control reviews..

Is Robots.txt Tester free?

Yes, it is completely free to use, and no registration is required. Tool processing happens entirely in your browser, and your input content and uploaded files are not sent to a server. Our first-party improvement metrics use no cookies, visitor IDs, or session IDs and store only normalized page paths and daily counts for fixed event IDs.

Robots.txt Tester

Quickly check crawler access rules from robots.txt in the browser.

SEO Utility

robots.txtテスター

User-agent とパスを指定して robots.txt ルールの許可・拒否を確認します。

robots.txt

User-agent

Path

Result

ALLOW

No rule matched yet.

長いパターンが優先され、同じ長さなら Allow が Disallow より優先されます。

パターン: * = ワイルドカード / $ = 末尾固定

About Robots.txt Tester

Robots.txt Tester is a browser-based checker for evaluating whether a specific path is allowed or blocked for a given user-agent under a pasted robots.txt file. It is useful for SEO reviews, crawler-control audits, site migrations, staging checks, CMS template validation, and release QA where a small rule mistake can lead to blocked indexing or unintended crawling.

Robots.txt looks simple, but in practice it is easy to misread the interaction between user-agent groups, `Allow` and `Disallow` lines, and rule specificity. This tool helps by selecting the most specific matching user-agent group, applying longest-match logic, and showing which rule actually determined the result.

That makes it practical for testing crawler access before deployment, reviewing generated robots rules, and aligning SEO and engineering teams on the expected behavior.