# Impressions **Impressions** are how many times a certain ad was displayed on websites hosting advertising. An impression only means that the ad was loaded into the website - this doesn’t necessarily mean that the visitor saw the ad. Still, the number of Impressions is suitable for a rough estimation of an ad’s visibility. This metric also finds use as the input variable for indicators such as [click-through rate](/roivenue-resources/glossary/marketing-and-financial-glossary/click-through-rate-ctr.md). ### Parameters **`Roivenue Shortcut:`**` ``impressions` --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.roivenue.com/roivenue-resources/glossary/marketing-and-financial-glossary/impressions.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.