What do you mean by Robots.txt? Why it is used?

[Ravina123]

Robots.Txt is a textual content file webmasters create to instruct web bots or crawlers ( search engine robots) easy methods to crawl pages on their website. The robots.Txt file is part of the the robots exclusion protocol (REP), a group of web standards that keep watch over how crawlers crawls the web, entry and index content material, and serve that content material up to customers. The REP additionally includes directives like meta robots, as well as page-, subdirectory-, or web page-broad guidelines for how search engines like google and yahoo must treat links (such as to “follow” or “nofollow”).

[SteveS]

If you are running a site so you better have to understand about how we can use to this Robot.txt file. It is a file that use to make understand of google crawl that what pages should be crawls or not. we can better know this file like what pages of our site has to make crawl by Google and what pages not. here is a format to this: User- Agent : * (follow) & Disallow: / (no follow)

[riyajindal]

The robots exclusion standard, also known as the robots exclusion protocol or simply robots.txt, is a standard used by websites to communicate with web crawlers and other web robots. ... The standard is different from but can be used in conjunction with, Sitemaps, a robot inclusion standard for websites.

[Arpita]

Thankyou for sharing this useful information!

[jay22]

Robots.txt is basically a file that instructs or tells google which pages of your website to crawl or index and which pages to avoid. IT can also give directions to not to crawl a particular image or certain files like PDF etc. It has a process
User-agent: *
Disallow: /
This tells all the search engine crawlers not to index the particular page or file. The star signifies crawling denied by all the search engines. On the other hand if you specify the name of the bot then it denies only that particular search engine to crawl. For example
User-agent: Googlebot
Disallow: /
This will stop only the google search engine to crawl your website.

There are reasons to allow or disallow search engines to index certain information on your website:
* in case of e commerce websites you have to protect the personal information of the customers, so you can disallow the same
* in case similar information is present on different pages( this can also be done by canonical tag)
* specify location of sitemap
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[printablescalendars]

Robots.txt is a file which tells crawlers to crawl website or not.

[Ronald91]

Robots.txt
The robots exclusion standard, also known as the robots exclusion protocol or simply robots.txt, is a standard used by websites to communicate with web crawlers and other web robots. The standard specifies how to inform the web robot about which areas of the website should not be processed or scanned.
Use of it:
Web site owners use the /robots.txt file to give instructions about their site to web robots; this is called The Robots Exclusion Protocol. The "User-agent: *" means this section applies to all robots. The "Disallow: /" tells the robot that it should not visit any pages on the site.