SEO Basics: Understanding Crawlability and its Impact on Rankings
If you want to surpass your competition and achieve higher rankings in search engines, having a solid understanding of technical SEO is crucial. While creating quality and relevant content is important, it's equally vital to grasp key concepts like crawlability. Let's explore the significance of crawlability and how it relates to your website's performance.
What is a Crawler?
To comprehend crawlability, we first need to familiarize ourselves with web crawlers. A search engine crawler, also known as a bot, robot, or spider, is an automated program that systematically scans and indexes web pages. When a crawler visits a website, it saves the HTML version of the pages in a massive database called the index. This index is regularly updated to reflect any changes or additions made to the website.
What is Crawlability?
Crawlability refers to the accessibility of your website for search engine crawlers. In other words, it determines how easily Google or other search engines can crawl and index your site's content. While it's possible to block crawlers from accessing your website or specific pages, doing so may prevent your site from appearing in search results.
Factors Affecting Crawlability:
Several factors can influence the crawlability of your website:
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Robots.txt File:
If your robots.txt file instructs crawlers to stay away, search engines won't explore your website or specific pages mentioned in the file.
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HTTP Header:
The HTTP header of a page contains a status code. If this code indicates that the page doesn't exist, crawlers won't index it.
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Robots Meta Tag:
By using the robots meta tag, you can control whether search engines should index a particular page. If the tag instructs the crawler not to index the page, it will still crawl the page but won't include it in the search index.
The Environmental Impact of Crawlers:
Interestingly, the frequent crawling performed by search engine bots has an environmental impact. Crawlers visit websites multiple times a day to discover new content or check for updates. However, this leads to unnecessary crawling of URLs that don't undergo significant changes. The excessive crawling consumes substantial energy resources, which has a negative effect on the environment.
Expand Your Knowledge of Crawlability: While crawlability is a fundamental aspect of technical SEO, it can be complex for many individuals. Nevertheless, understanding crawlability is crucial for your website's success. Inadvertently blocking crawlers from accessing your site can severely impact your rankings in search engines. To gain a deeper understanding, consider taking our technical SEO training courses. These comprehensive SEO courses cover topics such as detecting and resolving technical SEO issues using the Yoast SEO plugin. We even offer a specialized training module on crawlability and indexability.