Technical SEO

Redirect Loop

Quick Definition

A redirect loop occurs when URL A redirects to URL B, which redirects back to URL A — creating an infinite cycle.

In context

Browsers detect redirect loops and stop after several hops, showing an error to users. Search engines abandon the URL entirely. Audit with crawl tools to detect and fix immediately.

Have a question this didn't answer?

Book a free 60-minute strategy call. We'll explain how this concept applies to your specific situation.

Book a Free Call Browse 50+ Detailed Answers

Related terms

Schema Markup

Schema markup is structured data added to pages (in JSON-LD format) that helps search engines understand content type — product, recipe, FAQ, local business, article.

Render-Blocking Resource

A render-blocking resource is a CSS file or JavaScript file that the browser must download and parse before showing the page.

JavaScript Rendering

JavaScript rendering is the process by which search engines (and AI engines) execute a page's JavaScript to expose dynamically generated content for indexing.

Sitemap Index File

A sitemap index is a special XML file that references multiple individual sitemap files — required when a single sitemap exceeds 50,000 URLs or 50 MB and useful for organising sitemaps by content type.

X-Robots-Tag (HTTP header)

The X-Robots-Tag is an HTTP response header that controls indexing behaviour — equivalent to the <meta name="robots"> tag but applied at the HTTP level, useful for non-HTML resources (PDFs, images).

Mobile-First Indexing

Mobile-first indexing means Google primarily uses the mobile version of your site for crawling, indexing, and ranking. As of 2025, every site is mobile-first indexed.

Back to all terms