Bounce Rate
The percentage of sessions in which a user leaves a site after viewing only one page without any interaction.
Definition
Bounce rate is a web analytics metric that measures the percentage of single-page sessions — visits where a user lands on a page and leaves without interacting with anything or navigating to another page on the same site. In Universal Analytics (UA), a bounce was defined purely as a single-page session regardless of time spent. In Google Analytics 4 (GA4), this was replaced with "Engagement Rate" (the inverse of bounce rate), where an engaged session is one lasting at least 10 seconds, having a conversion event, or viewing multiple pages.
The SEO relevance of bounce rate is indirect but significant. High bounce rates can signal to Google that content is not satisfying user intent — searchers click through from the SERP, don't find what they're looking for, and return to Google ("pogo-sticking"). This behavioral pattern is a negative quality signal. However, bounce rate context matters enormously: a blog post that fully answers a question in one page should have a high bounce rate (the user got what they needed), while an e-commerce product page with high bounce rate signals something is wrong.
Strategies to reduce bounce rate where it matters: ensure content matches search intent precisely, improve page load speed (every second of delay increases bounce probability), use clear internal linking to guide users to related content, ensure the page is mobile-responsive, and test page content and layout with user research to identify friction points.