Microcopy appears everywhere on interfaces. It's the snippets of text one sees on apps and websites that help find what one is looking for. Error messages, labels on buttons, placeholders in input fields, and tooltips are all examples of microcopy.
Microcopy is the term used to refer to these small bits of copy on a product. We use it everywhere in our interfaces, including the labels on call to action buttons as well as placeholder text in input fields. Small snippets of copy have a big effect on our experience. Even though these little pieces of text aren't taking up huge amounts of space on our products, they also have a huge impact collectively. They can be held responsible for shaping a substantial portion of the user experience on the site.