Impression (YouTube)

An Impression on YouTube is recorded each time a video's thumbnail is shown to a viewer on YouTube — including in the Home Feed, search results, suggested videos, and other surfaces. Impressions are a key metric for understanding a video's reach and discoverability. The relationship between impressions and views is measured by Click-Through Rate (CTR) — a high CTR indicates that the thumbnail and title are compelling enough to convert impressions into actual views. YouTube Studio provides impression data broken down by traffic source, allowing creators to understand where their content is being surfaced and how effectively it is converting impressions into views.