The Technical Syntaxes of a robots.txt File

A robots.txt generator is a tool that you can use to produce a robots.txt file which is a very useful text file especially if you own a website. The robots.txt file can be used by you to give directions to web crawlers like search engines about which pages in your website they can visit and which pages they are not allowed to go into. This can be used by you to prevent being accused of duplicate contents or to protect sensitive and private information in your site. There are a lot more uses for the robots.txt file and all of them are super beneficial for your website.

The robots.txt file works through the robots.txt language. This language is composed of several technical syntaxes that the text file follows, much like a programming code. If you want to know these technical syntaxes, then continue reading below.

The User Agent Syntax

The user agent syntax is basically used to specify the web crawlers, usually the search engines, that you permit access into your website. If you indicate an empty field in the user agent, then this means that you are permitting all agents to gain access to your webpages. On the other hand, if you specifically indicate which user agents can crawl into your website, then the file will not permit page access to those agents not included in the user agent syntax. You can find a list of user agents on the internet to select from.

The Disallow Syntax

The disallow syntax is where you specify the specific URL that cannot be crawled by web crawlers. Take note that only one disallow line is permitted for each URL. Indicate here the webpages that you do not want to be crawled by the user agents.

The Allow Syntax

The allow syntax can only be applied to Googlebot. This syntax indicates to Googlebot which specific pages or subfolders it can access regardless of whether the parent folder of this subfolder was allowed to be accessed or not. This is useful if a specific folder contains only some specific subfolders that can be accessed while the rest in it are not accessible.

robots.txt generator

The Crawl Delay Syntax

The crawl delay syntax is the amount of number of milliseconds that a web crawler must wait before being able to crawl into a specific page. However, take note that this command will not work for Googlebot. An alternative is to set the crawl rate for Googlebot.

The Sitemap Syntax

The sitemap syntax can be used to specify the location of an XML sitemap that is associated with the URL. However, take note that this syntax is only applicable to search engines like Yahoo, Ask, Bing, and Google.

Now, you know the technical syntaxes of the robots.txt file. But note that his is just the general. There are a lot more fundamentals behind the workings of the robots.txt file. If you do not have enough time to learn all, then you can just use the robots.txt generator to generate your own robots.txt file.