How Does A Crawler Based Search Engine Work: Understanding Search Engine

Rasheed Nyn
4 min readJul 13, 2021
understanding search engine

When you have a top-notch website and SEO-friendly content, ranking will be a matter of the moment. Search engines crawl and index good content and show them according to its relevance to the search queries or keywords. The better quality content you have, the quicker you will rank for.

So, that’s how a search engine primarily functions. One thing is certain, though: it’s all about crawlers. To learn more about how does a crawler based search engine work, let’s see what a search engine crawler is.

What is a search engine crawler?

Crawler based search engines use crawling methods to gather data online. The bot combs throughout the online data gallery and looks for indexable content. Google and Yahoo are two popular crawler based search engines. The crawlers take every URL into account, list down keywords, and add them to the database.

The main aim of these robots is to discover ever-growing content libraries and identify worthy ones. However, by content, it’s not the written texts. Any image, PDF, video, and other media files with links are subjected to be crawled and indexed.

It may sound too simple. But as mentioned before, the backend is loaded with actions. While you enjoy consumable data just by a click, search crawlers are digging up millions of web pages to show you the most relevant information.

So, search spiders are busy bees- no doubt. And maybe so, sometimes you will require more time than usual to get your website indexed.

Read Also: What is White Hat SEO?

Why Is My Page Not Indexing?

Robots.txt file: This is a great spot to start with your journey towards fixing indexing issues. Google bot primarily looks into the robots.txt file when trying to index. If you are asking the spider not to index your webpage, it will do so.

Too many redirections: Using so many 301 redirects can discourage crawlers to leave your site as it is. Moreover, it is quite annoying and audiences will abandon your website instantly.

Duplicate or think content: Great content is useful and reader-friendly. So, if you have the aforementioned issues fixed, most probably your webpage is not indexed due to poor content. Upgrade your website content quality to invite crawlers and get indexed fast. Avoid duplicate content issues to avoid penalties as well.

Page not responding: Consider the functionality of your website. Make sure the URL is not showing a 404 error message.

How To Optimise Websites For Easy Crawlability & Quick Ranking?

The better your website’s crawlability is, the better your chances for ranking is. After all, your understanding of how does a crawler based search engine work impacts your SEO success.

Website structure

“When you are designing a website, make sure you are optimising for page speed, content readability, and keyword distribution. This sends strong signals to web crawlers and helps you rank faster on Google.”

Authority Links

The number of relevant links will help your website get rank faster. The more your website gets links from relevant sources, the more search crawlers will crawl your site. Evidently, every piece of information will be inspected by the web spiders, keeping it hot all the time. Besides, use internal links to your web pages to show relevance and build a virtual content category.

Keyword Optimisation

Keywords are the most crucial points for a crawler based search engine like Google. With precise keywords, you are asking search bots to show your website to the relevant people. Besides, it helps you rank on top pages. Use any popular keyword research tool like and select the most suitable ones. As keyword selection is a tricky process, let the professional SEO practitioner do it on your behalf.

Page Content

Crawler based search engines cannot read content buried under Flash and Java plugins. So, to make your content indexable, avoid using those. Keep the important information open to all search crawlers. This way, your website is ready to get indexed and ranked on Google.

Final Words

To understand the basic science of search engine optimisation, you have to learn how does a crawler based search engine work first. The more you gather knowledge on those crawlers, the better you can optimise your website for them.

Crawlers or spiders depend on your content and website structure to index your site and give it a decent ranking. Even though crawlers are independent, your action determines how search engine optimisation works on your virtual spot. So, make sure your website is not blocking crawlers with a noindex robots.txt file, you are publishing great content, and your SEO strategies are not fishy in the eyes of a crawler based search engine. Down on confidence? Hire our SEO experts to rank your website on Google.

Originally published at https://leapdigital.online on July 13, 2021.

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Rasheed Nyn

Content writer turned strategic marketer with an artistic mind for love fictions.