Thumbnail
Thumbnail

Definition
A thumbnail image is a miniature version of a picture or video to assist recognition and organisation of assets on a webpage. Often found on category and product pages.

Source: Very.co.uk
Resources:
Conversion marketing – Glossary of Conversion Marketing.
Over 300 tools reviewed – Digital Marketing Toolbox.
A/B testing software – Which A/B testing tools should you choose?
Types of A/B tests – How to optimise your website’s performance using A/B testing.