Above you will see two examples:
Example A: is a supplied EPS file that has been printed, as you can see the logo displays a full resolution when printed with no pixelation.
Example B: displays a supplied logo downloaded from a website and printed, as you can see the logo will display a pixelation, this is because websites and screen resolutions will generally display files at 72dpi and industry standard print requires a resolution of 300dpi, so its very important we are supplied with either a .EPS file or a 300dpi JPG/Tif of a company logo in order for print material to look correct once hot off the press.
So many times the question is asked ‘how can I open a .eps file?’ or do we need some fancy software for viewing EPS files?’ Firstly let me explain what an EPS file is and why us designers like making logos in that format and always request clients to send logos within a .EPS format.
.EPS, so What is it?
EPS stands for Encapsulated PostScript, which basically means a PostScript document that is encased into a self contained file, which can be placed inside another PostScript document. EPS files will typically have some kind of low-resolution preview and some computer operating systems will allow and disallow a on screen preview.
Identifying an EPS
Yes, it’s the one with the .eps file extension, but how do you know what’s inside without being able to open it? If you are a creative professional like ourselves you’ll have the tools to open these files and edit them, most commonly Adobe Illustrator, but if not how can you tell what’s in the file? A rough indication of whether the file contains vector or bitmap graphics can be the file size. Bitmap graphics tend to be larger file sizes, especially high-resolution bitmap graphics for print, than vector graphics. This can be really confusing when you are looking for a high-resolution logo, where the file size can be tiny, typically under 100k, but can be enlarged an infinite amount without loss of quality.
Why work with an EPS?
If you have a graphic element that needs to be used in a number of ways, like a logo, EPS is a useful format, because it can be placed into a number of applications that can use the graphic in a layout. EPS files can hold bitmap, graphics (e.g. photographs) and vector graphics (e.g. logos and fonts). Vector graphics are really useful because they can be scaled without any loss of quality or resolution and can be edited by applications such as Adobe Illustrator. That’s why we designers like them so much.
Software to open EPS files
Editing a EPS file will need some fancier software that costs more money, luckily we have the right tools for the job.
- Adobe Illustrator
A vector graphics editor
- Adobe Photoshop
A bitmap graphics editor
- Corel Draw
A vector and bitmap graphics editor
You can edit a EPS file from the above programmes. Please remember if you are converting a vector EPS and saving to either a bitmap format, tif or JPG, then you wont be able to scale the image above 100% without pixelation.