x-height

The distance between the baseline and the mean line of lowercase letters in a typeface. Nearby descenders (such as j) and ascenders (such as q) usually extend slightly below or above this height.

More terms you might want to know

Type Size

The height of a font, measured in points or pixels.

PPI

PPI stands for Point Per Inch. PPI is the number of dots per inch in a printer's resolution or the number of pixels per inch in a monitor's screen resolution. The more PPI, the higher your image quality will be as it becomes sharper and clearer. The lower your PPI, the lower your image quality will be, and the more likely you'll see individual pixels in an image.

Right-aligned

Text that flows from right to left and is the default reading direction of a page with its content aligned on the right margin.

Ellipsis

Also known as a suspension point, is a series of dots (…) that is used either as a substitute for some text that has been omitted from a sentence or when the author does not wish to pause in their writing.

PDF File

An abbreviation for Portable Document Format. The PDF format was originally developed to share documents between different operating systems in the late 1980s. Any text document, image or page layout can be saved as a PDF file that includes all of the font information needed to display it without losing quality.

Ligature

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

Typeface Design

The art and discipline of putting together set of typefaces into a harmonious and readable type system. A typeface designer spends much time considering many things such as clear visual message, readability at different sizes, legibility at small point sizes, ease of use for printing processes on its own or over the top of other fonts.

ID

A selector that can be applied to any HTML element. ID should be used when designing for a single instance, such as using the id="main" attribute on an <h1> tag.

Readability

A measure of the ease of understanding text.

Pixel

A pixel, or a picture element, is the smallest addressable element in a display device.

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