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How to Optimize “Robots.txt”

May 27, 2016 | Author: | Posted in SEO

CRB Tech Reviews would like to guide you about Robots.txt through this blog. As the name suggests, it is nothing but a text file which webmasters often create, to command search engine robots and crawlers like Google bot on ways to crawl & index pages on their website.


To show signs of comprehending it, consider robots.txt a visit guide for crawlers and bots. It takes the non human guests to the astonishing regions of the site where the content is and demonstrates to them what is critical to be and not to be indexed. Every one of this is finished with the assistance of a couple lines in a txt document design. Having an all around experienced robot aide can build the velocity at which the site is indexed, carving the time robots experience lines of code to locate the content the clients are searching for in the SERPs.

The Robots protocol called Robots Exclusion Protocol or REP is a collection of web standards that control web robot behavior and search engine indexing as well. It comprises of the following:

  • The first REP from 1994, expanded 1997, characterizing crawler orders for robots.txt. Some web indexes bolster augmentations like URI patterns (wild cards).

  • Its augmentation from 1996 characterizing indexer mandates (REP tags) for use in the meta robots component, otherwise called “robots meta tag.” Meanwhile, web indexes support extra REP tags with a X-Robots-Tag. Website admins can apply REP tags in the HTTP header of non-HTML assets like PDF reports or images.

  • The Microformat rel-nofollow from 2005 characterizing how search engines ought to handle links where the A Element’s REL property contains the value “nofollow.”

Important Standards or Rules:

  • Meta robots having the parameters “noindex, follow” should be deployed as a method to restrict crawling or indexation.

  • Only single “Disallow” line is permitted for each of the URL.

  • Subdomains associated with a root domain make use of separate robots.txt files.

  • Filename of this file is case sensitive. “robots.txt” is proper way, not “Robots.TXT.”

  • Query parameters cannot be separated by spaces. e.g. “/category/ /product page” would not be honored by robots.txt.

See More:7 Best Content Marketing Techniques in 2016

SEO Best Practices:

Blocking a Domain Page:

There are a few methods which help to block search engines from getting access to a particular domain.

Block with robots.txt:

This instructs the search engine not to crawl the provided URL. On the other hand, keep it in index and display in search results.

Block With Nofollowing Links:

A poor method to use and not recommended. Using this way, the search engines can find pages through toolbars of browser, links from various pages, analytics etc.

URLs blocked due to robots.txt errors:

Google was not able to crawl the URL because of a robots.txt confinement. This can happen for various reasons. For example, your robots.txt file may deny the Googlebot totally; it may restrict access to the registry in which this URL is found; or it may preclude access to the URL particularly. Frequently, this is not an error. You may have particularly set up a robots.txt file to keep us away from crawling this URL. On the off chance that this is the situation, there’s no compelling reason to settle this; we will keep on respecting robots.txt for this file.

For other topics related to SEO; like, On page Optimization and off page optimization, heading tags, blocked links etc. please visit crb tech reviews.

General Information:

The robots.txt file is public—know that a robots.txt document is a freely accessible file. Anybody can see what areas of a server the webmaster has hindered the engines from. This implies if a SEO has private client data that they don’t need freely search-able, they ought to utilize a more secure methodology, for example, password protection—to keep viewers from surveying any classified pages they don’t need filed.

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