Downloading

With downloading naturally you're looking for a file suitable to use in whatever application you are intending to use. Generally you should have an idea of the sort of file formats, colour-space and resolution you require. If not we hope the following will help you decide.

Uploading

When uploading, you'll need to consider what Downloaders are going to want for their workflows at download time. This usually requires a bit of forethought. In most cases you should upload the source file, but in many cases you'll also want to consider uploading addittional files that are more easily consumable generic file formats.

Vector vs Raster vs Container

  • Vector files: Vector artwork is artwork that is created in an illustration or drawing application like Adobe Illustrator and uses nodes and lines (vectors) to create shapes. Vector are scalebale and resolution independent.
  • Raster files: Raster artwork is artwork that is created from dot or bits. A photograph is a raster file. Typically raters are created with a camera or scanner or created with applications like Adobe Photoshop. Rasters do not scale well and resolution is important.
  • Container files: Container files are files that hold both vector and raster files together. A commonly used container file is an PDF file. PDF's can be created by a number of applications including Adobe Illustrator, Photoshop, Indesign and many others.

Typical File Types

You can tell a lot about a file by it's file extension. Below is a list of common file extensions and their meaning.

  • .ai = Adobe Illustrator. AI files are vector files (sometimes can include embedded raster files).
  • .psd = Adobe Photoshop. PSD files are raster files. If saved as a .psd it can have advanced features like layers, clipping paths, editable text and more. Generally a PSD file will have be either a modified photographic image or a created piece of art.
  • .tif = Tagged Interchange File Format. TIFF files are raster files. TIF's can include layers and transparency. TIF's are often the preferred raster format for high resolution images for reuse in professional workflows. BrandFM recommends TIFF for high resolution raster images
  • .eps = Encapsulated Poscript file
  • .pdf = Portable Document Format file
  • .jpg = Joint Picture Experts Group raster image - one of the most commonly used raster formats and compatible with most modern applications.
  • .png = Portable Network Graphics file. A great compact raster format that support alpha transparency and is used more and more on the web. But earlier web browsers such as IE 5/6 may have trouble displaying transparency correctly.

Typical Uses & what you probably need

This is a quick but by no means comprehensive guide as to what file types you'll(probably) need for a particular purpose.

Using in a Printed document

If you're going to print something you'll need a high resolution (300dpi) raster file or a vector file. CMYK is the primary colourspace for print but SPOT colour files give better colour control, although SPOT is usually used in vector files only (e.g. logos). RGB for photos is fine also as most printers will convert the RGB to CMYK using the appropriate colour-profile at print time.

For use on computer displays or the web

If you want something for the web, or a computer monitor - then you'll want an RGB(colour space) raster(type) file with a suitable resolution(72dip) and pixel size to suit your design. Typically JPG, PNG or GIF.

Adding to other artwork in a design application

If you're a designer or and going be giving the file to a designer, you'll most likely need a source vector or raster file. Probably an Adobe Illustrator(.ai or .eps) file for vector art and a Photoshop (.psd or .eps) or TIFF(.tif) file for raster art.