SEO foundations

Robots.txt

Robots.txt

Crawler access instructions for a site

Crawler access instructions for a site

IN PLAIN ENGLISH

Robots.txt is a text file at a website’s root that provides supported instructions about which URLs participating crawlers may fetch.

Robots.txt is a text file at a website’s root that provides supported instructions about which URLs participating crawlers may fetch.

Updated October 2026

Why Robots.txt matters in B2B

A mistaken disallow rule can restrict access to valuable B2B pages. A technical team needs to know what it controls and what it does not, especially when launching a resource section or moving from staging. Public availability and crawler permission are separate questions.

How to use the concept

Review the file against the intended public URL paths and relevant crawler names. Test changed rules before launch, then inspect whether important pages can be fetched. Coordinate with hosting and security controls, which can also affect access independently of the file.

An illustrative B2B example

A development restriction blocks a newly launched resources path. The site owner adjusts the rule for the public content and confirms access. Sensitive documents remain protected through authentication rather than simply listing their paths in robots.txt.

What to watch for

Robots.txt is not a privacy mechanism and does not force every crawler to obey. A blocked URL can sometimes still appear based on other information. If a search system must read a noindex instruction, preventing its fetch can undermine that intended control.

Frequently asked questions

Does disallow mean noindex?

No. Disallow controls fetching; noindex is an indexing instruction that normally needs to be read.

Should confidential pages rely on robots.txt?

No. Protect confidential content with appropriate authentication and access controls.

Related glossary terms

Crawlability

Noindex

XML Sitemap

Further reading

Google Search Central: robots.txt

Put this into practice

A definition is the starting point. Build a strategy that connects discovery to qualified inbound demand.

Get your audit →

Windgrove
Searchable Agency Partner Certified
Searchable Agency Partner Certified
Ahrefs Certified

Get in Touch

Spencer Duke

Co-Founder

Mitko Dimitrov

Co-Founder

What does AI think about us?

ChatGPT
ChatGPT
Claude
Claude
Gemini
Gemini
Grok
Grok
Perplexity
Perplexity
Windgrove

© 2026 Windgrove AI Inc. All Rights Reserved.

© 2026 Windgrove AI Inc. All Rights Reserved.

The content on this website is provided for general informational purposes only and is not intended as professional advice. Windgrove AI Inc. makes no representations or warranties regarding the accuracy or completeness of the information contained herein. Any reliance you place on this information is strictly at your own risk.