SEO Crawl

How Google Crawls Your Site

Google uses an automated program called Googlebot to crawl the web. It starts with a list of known URLs from previous crawls and from how sitemap works submitted by site owners.

When Googlebot visits a page, it downloads the content and follows the links it finds. Those links become new URLs to crawl later. This is how Google discovers most pages.

Google also uses signals like site structure and internal links to decide which pages to crawl first. A well-linked page is more likely to be crawled quickly.

Crawl Signals and Discovery

Google relies on several signals to find new or updated pages. These include internal links, external links, sitemaps, and URL submissions in Search Console.

Not all pages are crawled equally. Google prioritises pages it considers important or frequently updated. This is where crawl budget becomes relevant for large sites.

For most sites, the best way to help Google discover pages is to have a clear internal linking structure and an up-to-date sitemap. Avoid relying on uncrawlable elements like JavaScript links without fallback HTML.

• Internal links: the most common way Google finds new pages.
• Sitemaps: a file listing all important URLs on your site.
• External links: links from other sites can lead Google to your content.

Crawlability vs Indexing

A common mistake is to think crawling and indexing are the same. They are not. Crawling is just the first step: Google downloads the page. Indexing is when Google analyses and stores the page in its index.

A page can be crawled but not indexed. This happens if Google decides the page is low quality, a duplicate, or blocked by a noindex tag. Crawlability is about whether Google can reach the page at all.

If you want a page to appear in search results, it must be both crawlable and indexable. Blocking crawling with robots.txt prevents Google from even seeing the page.

Common Crawlability Issues include blocked resources or incorrect robots.txt directives.

Common Crawl Mistakes

Many site owners accidentally block important pages from crawling. This can happen through robots.txt, nofollow links, or JavaScript that Googlebot cannot parse.

Another mistake is assuming a crawled page will rank. Crawling is necessary but not sufficient. The page still needs to be indexed and meet ranking criteria.

Large sites often ignore crawl budget management. If Google spends its crawl allowance on unimportant pages, it may miss critical updates on key pages.

• Using robots.txt to block pages that should be indexed prevents Google from crawling them.
• Assuming a crawled page will automatically rank or even be indexed is wrong.
• Relying on uncrawlable links, scripts, or infinite scroll without fallback navigation can hide pages from Google.

Tools to Check Crawl Status

Google Search Console provides a URL Inspection tool that shows whether a page was crawled and indexed. It also shows the last crawl date and any crawl errors.

For deeper analysis, you can use a desktop crawler like Screaming Frog. It simulates how Googlebot sees your site and highlights crawl issues such as broken links or blocked resources.

Enterprise sites often hire an what enterprise seo consultant means to manage crawl strategy at scale. They may also use tools like moz sitemap for platform-specific sitemap generation.

Similarly, Magento Sitemap XML is available for Magento sites.