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What's the significance of Robots.txt file in a website?

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Dani AI

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Short answers from and are correct: robots.txt is the small text file (placed at your site root) that gives instructions to well‑behaved crawlers. is also right to name it the robots exclusion protocol. That description is useful, but a few practical points and common pitfalls are missing.

Robots.txt controls crawling, not security or guaranteed indexing. Use it to save crawl budget (block admin, staging, faceted navigation), point crawlers to your sitemap, or stop resource-heavy bots. Do NOT rely on it to hide sensitive pages — malicious bots ignore it and blocked pages can still be indexed if other sites link to them. For removing pages from search results, allow crawling and use a meta noindex or an X-Robots-Tag header instead of Disallow.

A minimal example:

# block admin, expose AJAX, point to sitemap
User-agent: *
Disallow: /wp-admin/
Allow: /wp-admin/admin-ajax.php
Sitemap: https://example.com/sitemap.xml

And to block all crawlers:

User-agent: *
Disallow: /

Practical cautions and troubleshooting: robots.txt must be at (one file per protocol/host). Ensure it returns HTTP 200 and content-type text/plain. Different crawlers support different directives (e.g., Crawl-delay, wildcards, Allow), so test for the engines you care about. Don’t block CSS/JS required for rendering — that can harm indexing. ’s duplicate‑page point is valid, but canonical tags or noindex are usually better than blanket Disallow.

Quick workflow: (1) inventory what truly needs blocking, (2) prefer canonical/noindex for duplicate or deindexing needs, (3) place and test /robots.txt with webmaster tools and monitor crawl/index coverage.

Recommended Answers

All 5 Replies

Member Avatar for Dani

To tell bots (such as Googlebot) and other spiders and crawlers what parts of your site to avoid.

Member Avatar for pty

The irony is palpable.

commented: Webguru asks this question? +6
Member Avatar for Vikash_12

The robots.txt file is used in a website to tell web robots which pages to crawl and index and which not.

Member Avatar for agustina

Robots.txt files are beneficial to you for search engines to ignore the duplicate pages on your website.

Member Avatar for sandy_5

The robots exclusion protocol (REP), or robots.txt is a text file webmasters create to instruct robots how to crawl and index pages on their website.

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