UNDERSTANDING FILE FORMATS

RASTER: VECTOR: Uses pixel data – lots of little dots to create Uses paths and strokes to create graphics that graphics that lose quality when resized can be scaled to any size without losing quality .JPG .EPS JOINT PHOTOGRAPHIC EXPERTS GROUP ENCAPSULATED POSTSCRIPT FILE

Typically used for high-quality Used for logos and illustrations as a photography and online use. vector graphic. Can be scaled to any Will lose quality if scaled over its size without losing quality. Suitable existing pixel dimentsions. Does not for screenprinting, large-format support . Suitable for posters, billboards etc. A universal online or desktop print use. format that supports transparency. .PNG .PDF PORTABLE NETWORK GRAPHICS PORTABLE DOCUMENT FORMAT

Designed for transferring images on Used to share documents without the internet. Supports transparancy, losing design or quality. A digital but not intended for print. Though version of a hardcopy. Suitable for can be used in applications like emailing, sharing and printing. microsoft word for desktop Elements and illustrations can be printing. Cannot be scaled up. extracted with the correct software. .PSD .AI

Used for editing photos, graphics Developed for representing a and web design. Stores an image single-page vector-based drawing with support for most imaging in either .eps or . formats. It is options including layers with masks, a layered file used for illustrations transparency, text, etc. Cannot be and graphic design. Supports scaled over its pixel width. transparency and can be printed.

IMAGE RESOLUTION COLORS

HIGH RESOLUTION: 300 dpi – Used for magazine PANTONE: A set of standard colors for printing, and high-quality prints. each of which is specified by a number. Ideal for (5” x 7” photo = 1,500 px wide x 2,100 px high screenprinting, or 1-2 color press printing. LOW RESOLUTION: 75 dpi – Resolution used online 4C: CMYK – Cyan, Magenta, Yellow and Black ink and on-screen, not for print. colors used for offset process printing. (5” x 7” photo = 375px wide x 525 px high RGB: Red, Green, Blue, colors of light used to make up pixels on-screen. Used for web and devices.

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