Glossary

Red, Green, Blue) colour mode is for anything that is computer based design. This includes websites, apps, banner ads or any other design created for electronic use.

(Cyan, Magenta, Yellow, Black) colour mode is used for print design.

This includes logos, business cards, stationery, illustration, packaging and any other designs used for print.

Vector image are made up of points, lines, and curves that can be infinitely scaled without any loss in image quality.

Raster images are made up of a set grid of dots called pixels where each pixel is assigned a colour. Unlike a vector image, raster images are resolution dependent, meaning they exist at one size.

When you transform a raster image, you stretch the pixels themselves, which can result in a "pixelated" or blurry image. When you enlarge an image, your software is essentially guessing at what image data is missing based on the surrounding pixels. More often than not, the results aren't great.

Lossless image formats capture all of the data of your original file. Nothing from the original file, photo, or piece of art is lost-hence the term "lossless."

The file may still be compressed, but all lossless formats will be able to reconstruct your image to its original state.

Lossy image formats approximate what your original image looks like. For example, a lossy image might reduce the amount of colours in your image or analyze the image for any unnecessary data.

These clever technical tricks will typically reduce the file size, though they may reduce the quality of your image.

JPEG is a lossy raster format that stands for Joint Photographic Experts Group, the technical team that developed it. This is one of the most widely used formats online, typically for photos, email graphics and large web images like banner ads.

JPEG images have a sliding scale of compression that decreases file size tremendously, but increases artifacts or pixelation the more the image is compressed.

EPS is an image format that stands for Encapsulated Postscript. Although it is used primarily as a vector format, an EPS file can include both vector and raster image data.

Typically, an EPS file includes a single design element that can be used in a larger design.

PNG is a lossless raster format that stands for Portable Network Graphics. Think of PNGs as the next-generation GIF. This format has built-in transparency, but can also display higher colour depths, which translates into millions of colours.

PNGs are a web standard and are quickly becoming one of the most common image formats used online.

Al is a proprietary vector image format that stands for Adobe Illustrator. The format is based on both the EPS and PDF standards developed by Adobe. Like those formats, Al files are primarily a vector-based format, though they can also include embedded or linked raster images.

Al files can be exported to both PDF and EPS files (for easy reviewing and printing), and also JPEG, PNG, GIF, TIFF and PSD (for web use and further editing).

PDF stands for Portable Document Format and is an image format used to display documents and graphics correctly, no matter the device, application, operating system or web browser. At its core, PDF files have a powerful vector graphics foundation, but can also display everything from raster graphics to form fields to spreadsheets.

Because it is a near universal standard, PDF files are often the file format requested by printers to send a final design into production.

TIFF is a lossless raster format that stands for Tagged Image File Format. Because of its extremely high quality, the format is primarily used in photography and desktop publishing. You'll likely encounter TIFF files when you scan a document or take a photo with a professional digital camera.

TIFF files can also be used as a "container'' for JPEG images. These files will be much smaller than traditional TIFF files, which are typically very large.