Placeholder Text

Text that is used to fill in a gap in a document.

More terms you might want to know

Trim Size

The width and height of a document, after having been cut down to size from a larger sheet.

PSD File

A digital file created in Adobe's illustration and photo manipulation software Photoshop. PSD files are used to edit images, create graphics, art, icons, images, among a plethora of other things.


A small picture or design that represents an idea, function, or some other type of visual concept. For example, in computer graphics and web development, an icon is a pictorial representation of a program or file type.

A/B Testing

A statistical method in which two variants of the same activity are compared against each other (typically with several variants), one at a time, and the most effective variant is selected.

Rule of Thirds

A rule of thumb used in photography to create more visually appealing images which states that an image should be composed so that the subject or focus of the image occupies one-third of the picture space, with two equal vertical lines dividing their composition into two.

Complementary Colours

Colours that directly across the colour wheel, like blue and orange. When you put these colours next to each other, they make a great contrast together. Complementary colours are often found in nature.

Empathy Map

A way of researching users and understanding their behaviour in the context of the product, helping designers in understanding users' needs and expectations and what motivates them to act.

Designers can use this type of research to understand better their users and what kinds of experiences they are looking for. And this will allow the designers better empathize with their users, making them a part of the learning cycle.

AI File

An Adobe Illustrator vector format file. Files with the extension .ai are often used for artwork and illustrations as users can resize them without distortion. It is composed of several layers with objects and text on each layer. Users can import Illustrator files into many other programs like InDesign, Acrobat, Photoshop etc. If you design or print your t-shirts, you can create your designs in Illustrator and apply them to your t-shirt using a heat press.


A form of typographic ornament used by a type designer for decorative purposes. Common ligatures are based on joining two or more letters together, often with figures embedded in the design

Flat Design

A design style first introduced by Microsoft Design Language based on minimalism and simplicity. This newer trend focuses on reducing nonsensical designs and makes the content more accessible for all users.

In this way of designing, fewer elements are used to create shapes and less emphasis on gradients and textures. This modern trend moves away from skeuomorphism. Instead, it focuses on a realistic view or illustration with buttons and icons appearing flat with no shadows.


Got a suggestion or found an issue with the glossary?
Let me know!