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What is Robot.txt in SEO?

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  • Latest Post Latest Post by bhav123

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Good start from (purpose) and the filename correction from — and good question from about placement. The posts cover the basics; below is a compact, current checklist that fills the gaps, highlights gotchas, and gives a ready-to-use example.

Key points and common misunderstandings: robots.txt is a standardized, advisory protocol (RFC 9309) and is public — do not use it to “hide” secrets. It controls crawling, not indexing: a Disallow stops a crawler from fetching a page but does not reliably remove the URL from search results; to prevent indexing use a meta noindex tag or an X-Robots-Tag header (and note Google no longer supports an unofficial noindex in robots.txt). Major crawlers support Allow/Disallow, limited wildcards (*, $) and Sitemap: entries; Google imposes a practical size/encoding/caching behavior you should be aware of. (rfc-editor.org)

Practical example (change paths to match your site):

User-agent: *
Disallow: /wp-admin/
Allow: /wp-admin/admin-ajax.php
Disallow: /cart/
Disallow: /*?*utm_
Sitemap: /sitemap.xml

Notes on the example: block admin and cart pages you don't want crawled, allow the single AJAX endpoint if needed, block common tracking query parameters, and point crawlers to your sitemap so discovery is efficient. Keep the file plain UTF-8 text, named exactly robots.txt at the site root, and keep it simple — complex patterns are more error-prone. (developers.google.com)

Testing & troubleshooting: fetch the live file (for example, in a browser or via curl) to confirm it returns the correct plain-text 200 response; use Search Console’s URL Inspection and Coverage reports to find “indexed though blocked” or “blocked by robots.txt” cases; check server logs to see which user-agents are actually requesting pages; and do not block CSS/JS that your pages need to render, because blocked resources can break rendering and ranking. Also watch caching (Google typically refreshes robots.txt about every 24 hours) and the 500 KiB practical size limit. (developers.google.com)

Troubleshooting tips: if important pages are missing, temporarily allow crawling and add noindex on the page (or use X-Robots-Tag) to remove them; avoid listing sensitive URLs in robots.txt; test any change on a staging domain first; and after fixes request a re-crawl in Search Console.

Recommended Answers

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Member Avatar for Octet

It is a file that tells a crawler how it should behave on your site.
Search engines send out web crawlers, also known as bots to websites which follow links and collect bits of information such as the number of images and meta tags.

A robot.txt is a text file on the web server which tells these crawlers what they can and cannot do (although they don't have to be followed). An example would be to tell them not to index certain pages or even entire directories.

In SEO, they can be useful for stopping them attempting to visit pages which require logging in, or to stop them visiting pages which are X months old. This way, the search engines only view the latest content that you have selected.

Edited by Octet
commented: thanks for answer but do reply my quary +0
Member Avatar for allenhill99

robots.txt is a simple text file in your web site that inform search engine bots how to crawl and index website or web pages.

Member Avatar for semseogurus

It is a file that tells a crawler how it should behave on your site.
Search engines send out web crawlers, also known as bots to websites which follow links and collect bits of information such as the number of images and meta tags.

A robot.txt is a text file on the web server which tells these crawlers what they can and cannot do (although they don't have to be followed). An example would be to tell them not to index certain pages or even entire directories.

In SEO, they can be useful for stopping them attempting to visit pages which require logging in, or to stop them visiting pages which are X months old. This way, the search engines only view the latest content that you have selected.

Yes, i am agree with your answer.

Member Avatar for almostbob

note the corrections in allenhill99 & creditcards replies

robot.txt is nothing
the file must be named robots.txt

Member Avatar for ravinder yadav

but where is this file attached? is it attached with index file(i mean is it in root directory of our site?)

Member Avatar for Octet

The file goes in the root directory of your website, yes.

commented: thanks +0
Member Avatar for bhav123

A robots.txt file restricts access to your site by search engine robots that crawl the web. It is a text file that tells search engine spiders also known as search engine robots, which parts of your website they can enter and which parts they can’t.

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