Crawler

Crawler is a mechanism that serves as a bridge between users and the information they seek, helping users access the information they want on the World Wide Web quickly and easily by following the links on the web. In Turkish, it means spider, robot or bots. The reason why Crawlers are called "spiders" comes from navigating the web just like real spiders navigate spider webs.

The shortest answer to the question what is a crawler and how it works; it is a software that collects the necessary information about websites for search engines. Their purpose is to index all content of websites on the internet. Thus, these websites can appear in search engine results. Web developers and those interested in seo frequently benefit from the Crewler system.

There is a ton of information and suggestions on the web. These data are constantly changing and their numbers are increasing day by day. Search engines can't magically know which websites are on the internet. Programs need to scan and index them before presenting the right pages for keywords and word phrases or words people use to find a useful page. Spiders have taken on the task of monitoring information in the background of search engines by traveling all over the internet and extracting words on page by page. They emerged with the advent of search engines.

The Crawler looks at the information and follows the bridges on each page. All information is stored in the spider's database. After examining the information, it ranks the search results in a certain order. It usually does this by looking at the analysis of each word on the website and ranking it according to the quality of the data obtained. It also examines whether the content has information related to the query or is a direct copy of another online content, and affects search engine optimization (SEO) by providing entry to search engines like Google.
 

Examples of Crawler

There is a crawler behind all search engines like Google, Yandex and Bing. Major search engines have multiple crawlers with specific focuses. The search engine you may encounter and the crawler it uses are as follows:

1. GoogleBOT

It is one of the most famous web crawling bots developed by Google. It has two types; Deepbot and Freshbot. One of them is a desktop browser that simulates a desktop device user, and the other is a mobile browser that simulates a mobile device user.

Websites are crawled by both Googlebot Desktop and Googlebot Smartphone. Google creates all the data with this web crawling bot. This bot continuously scans many issues such as the content, codes of the websites, and their connection with other websites through links.

The more frequently new content is uploaded to the website, the more frequently GoogleBOT starts to visit you. For more information about GoogleBOT, you can read this article.

2. Bingbot

It is a web crawling bot developed by Microsoft. Its purpose is to add search results to the Bing index. It helps to be higher in Bing search and increase organic reach. For the website to be seen in the directories of the Bing search engine, adjustments should also be made for Bingbot.

3. Yandex Bot

It is the name given to the BOT of the search engine developed by Yandex. YandexBot has many versions. YandexBots continuously scan pages on the internet and present the information they obtain to the search engine's stock. Using Yandex Bot helps to rank higher in Yandex search engine and increase organic reach.

Also, there are different web crawling bots such as Baidu Spider (Baidu), Slurp (Yahoo), DuckDuckBot (DuckDuckGo), Exabot (Exalead).

How Does Crawler Affect SEO?

The answer to the question What is SEO can be defined as all improvement works done for search engines about a website. SEO aims to reach the highest visitor number in the search traffic for the related keywords by being in higher ranks in search engines.

If the crawler does not scan a website, it cannot add it to the index and the website cannot appear in the search results. Therefore, if a website owner wants to get organic traffic from search results, they should not block web browser bots. Understanding web browsers is just a part of effective technical SEO that can significantly improve website performance.
 

What are the Uses of Web Crawling Bots?

Indexing

The primary purpose of web crawling is to keep a current database of all sites on the Web.

Data Mining

In the data mining field, which is the process of extracting information from large volumes of data to identify useful information within a data set, the Crawler is also used.

Site Health

Crawler is used in site improvements, finding broken bridges on the website, and correcting them.