Some pages are known because Google has already visited them before. Other pages are discovered when Google follows a link from a known page to a new page. Still other pages are discovered when a website owner submits a list of pages a sitemap for Google to crawl.
If you're using a managed web host, such as Wix or Blogger, they might tell Google to crawl any updated or new pages that you make. Once Google discovers a page URL, it visits, or crawls , the page to find out what's on it. Google renders the page and analyzes both the text and non-text content and overall visual layout to decide where it can appear in Search results.
The better that Google can understand your site, the better we can match it to people who are looking for your content.
After a page is discovered, Google tries to understand what the page is about. This process is called indexing. Google analyzes the content of the page, catalogs images and video files embedded on the page, and otherwise tries to understand the page. Online search results are then pulled directly from this index.
A fun and easy way to think of it is as a library with an ever-expanding inventory. Googlebot is a generic term for the tools it uses to discover web content in both desktop and mobile settings. The strategic optimization of webpages works to increase visibility amongst web search results.
Ultimately, the more clear and concise your sitemap and content is, the more prominent your pages are likely to be overall. Googlebot is a crawling bot that in simple terms goes from link to link trying to discover new URLs for its index.
When these pages are discovered their content is rendered by Googlebot and its content is read so that the search engine can determine its subject matter as well as its value to searchers. Crawlability refers to the degree of access Googlebot has to your entire site. The easier it is for the software to sift through your content, the better your performance within the SERPs will be. However, it is possible for crawlers to be blocked, if not from your site as a whole, certainly from select pages.
Common issues that can negatively affect your crawlability include complications with a DNS, a misconfigured firewall or protection program, or sometimes even your content management system. Here are a few tips and suggestions in regard to optimizing your website for the Googlebot crawler:. The performance of your site within Google is a many-layered thing, and it is important to remember that Googlebot is always crawling.
According to Google all websites are likely going to be crawled by both Googlebot Desktop and Googlebot Smartphone. Variations on its crawlers that are designed to collect different information for different devices. When Google announced mobile-first indexing for its index in , it meant that websites with mobile versions would have that version entered into its index by default — signaling to online businesses and websites that mobile traffic was becoming ever more dominant.
Google has sixteen different bots designed for various forms of site rendering and crawling. The truth is that for SEO you rarely ever need to set up your site differently for any of these. Google never accepts payment to crawl a site more frequently — we provide the same tools to all websites to ensure the best possible results for our users. The web is like an ever-growing library with billions of books and no central filing system.
We use software known as web crawlers to discover publicly available webpages. Crawlers look at webpages and follow links on those pages, much like you would if you were browsing content on the web. When crawlers find a webpage, our systems render the content of the page, just as a browser does.
We take note of key signals — from keywords to website freshness — and we keep track of it all in the Search index. The Google Search index contains hundreds of billions of webpages and is well over ,, gigabytes in size.
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