Full Definition
Bounce rate has two different definitions depending on the tool: **In Universal Analytics (pre-2023)**: Percentage of sessions in which a user visited only one page and left without triggering any other requests. A user could spend 10 minutes reading a long article and still 'bounce' if they didn't click anything. **In Google Analytics 4 (2023 onwards)**: GA4 flipped the concept to 'engagement rate' — sessions with meaningful engagement (scrolling past 90%, staying 10+ seconds, or visiting 2+ pages). The inverse of engagement rate is effectively GA4's bounce rate. This is a more accurate measure of whether people actually absorbed your content. Context is everything when interpreting bounce rate. A high bounce rate is: - **Fine or expected**: On a contact page (people find the phone number and call), a thank-you page, or a blog post where reading and leaving is the intended behaviour - **Problematic**: On a product page, service page, or homepage where you want visitors to explore further or convert Common causes of high bounce rate on pages where it matters: - Page loads too slowly (users leave before content appears) - The page content doesn't match what the ad or SEO result promised - Poor mobile experience - Unclear next step — no visible CTA, no navigation to related content - The wrong audience is being sent to the page Actionable tip: In GA4, filter pages by high 'bounce rate' (or low engagement rate) + significant traffic volume. These pages are your priority for UX and content review — they're bringing people in but failing to hold them.