What Is a Backlink Audit? Checklist, Steps and Tools
A backlink audit reviews the external links pointing to a website, verifies their live evidence and turns link records into protect, repair, …
SEO Foundations Reference
Learn the core systems behind SEO, including crawling, rendering, indexing, canonicalization, retrieval, ranking, search intent, and search results.
What Is Broken Link Building? A Practical SEO Guide
Broken link building finds relevant dead links on external pages and offers a useful replacement. Learn the workflow, qualification rules and outreach …
What Is a Lost Backlink? Causes, Tracking and Recovery
A lost backlink is a previously observed external link that is no longer present or available in the current dataset. Learn how …
What Is Backlink Reclamation? How to Recover Lost Links
Backlink reclamation recovers external link relationships that became broken, lost or misdirected. Learn how to find opportunities and verify each repair.
What Is a Broken Backlink? Causes, Detection and Fixes
A broken backlink is an external link that no longer reaches its intended destination. Learn why backlinks break, how to find them …
What Is Anchor Text? Types, Examples and SEO Best Practices
Learn what anchor text is, explore common anchor text types, review clear examples, avoid over-optimization, and audit internal and external links for …
Dofollow vs Nofollow Backlinks: What Is the Difference?
Dofollow is shorthand for a normal backlink, while nofollow is an explicit rel value. Learn how nofollow, sponsored and UGC links differ …
What Is a Referring Domain? Referring Domains vs Backlinks
A referring domain is an external website that contains at least one backlink pointing to your website. Learn how domains differ from …
What Is a Backlink? Types, Quality Signals and How to Check Them
A backlink is a link from a page on one website to a page on another website. Learn how backlink types, referring …
What Is Crawl Depth in SEO? Levels, Impact and Examples
Crawl depth in SEO is the minimum number of observed link or crawl transitions required to reach a URL from a defined …
What Is a Crawl Path in SEO? Routes, Depth and Examples
A crawl path in SEO is an observed sequence of crawlable links or transitions through which a crawler moves from a known …
What Is Crawlability in SEO? Access, Rules and Testing
Crawlability in SEO is the ability of a specified search crawler to discover or receive a URL, reach its host, obtain permission …
How Do Search Engines Discover URLs? Links, Sitemaps & More
Search engines discover URLs by extracting addresses from resources they already know and by receiving URLs through supported discovery systems such as …
What Is a Search Engine Crawler? How Web Crawlers Work
A search engine crawler is automated software used to discover URLs, request web resources, extract new references, and return collected information for …
What Is Crawling in SEO? How Search Engines Find Pages
Crawling in SEO is the process through which search-engine software discovers URLs and requests their resources. Crawling allows a page to enter …