Problems encountered by search engine bots when trying to access pages, often due to broken links or blocked resources.
A crawl error happens when a search engine bot tries to reach a page on your site but fails. If Google can't crawl it, it can't index it, and you can't rank.
Google Search Console → Settings → Crawl stats (for server issues) and Pages → Not indexed (for 404s). Check these weekly. A spike in 5xx errors usually means your hosting is underpowered or misconfigured.
Browse related definitions in the same glossary category.
Algorithm
A complex system used by search engines to retrieve data and deliver results for a query. Google uses multiple algorithms to rank websites.
Algorithm Update
Changes made to a search engine's ranking algorithms that can impact website visibility and traffic.
AMP (Accelerated Mobile Pages)
A framework that enables ultra-fast loading of mobile pages by simplifying HTML and limiting scripts.
API Quotas
Hard limits on total API usage over a billing period, often tied to pricing tiers.
API Rate Limits
Restrictions on how many API requests can be made within a time period, requiring throttling and retry logic.
Broken Link
A hyperlink that no longer works because the destination page has been deleted or moved. Damages UX and SEO value.
Understanding "Crawl Errors" is just the first step. Our team at TwoSquares specializes in technical SEO and digital strategy, helping brands turn complex concepts into measurable growth.