1. EPS: Encapsulated PostScript
EPS format is a vector file that can be opened by the widest range of software, including older versions of Illustrator, as well as products outside of Adobe, such as Corel Draw and Sketch on Mac. For this reason, an EPS format must be created as an editable source file.
2. SVG: Scalable Vector Graphics
SVG is a vector image format that can be used online. With higher resolution screens becoming more and more common, since it’s a vector format, an SVG file will ensure the logo we designed remains sharp no matter the device it’s viewed on. Therefore, an SVG format should be created for developers to use on web or app projects.
3. PNG: Portable Network Graphics
PNG format allows for transparency, so it can be placed over colored background or images. A PNG format with a transparent background and width of 1000px also should be generated for various usages (e.g. using on a powerpoint).
4. Favicon: Also known as a shortcut icon, website icon, tab icon, URL icon, or bookmark icon
Needed when we are creating a logo for a product that has a website, a favicon is used on apps and browsers. It used to be created specifically in the ICO format. Currently, any transparent file type will work nowadays. PNG is the preferred format of choice.
With the iPhone and so many new devices created during the last 10 years, the favicon is no longer a single 16×16 picture. It has many usages, many sizes, and many designs. The most well-known derivative is the Apple Touch Icon for iOS. This icon is used when your visitor adds your site to his home screen. Therefore, we extract the most recognizable icon from the logo and make it as a favicon in different sizes.
- 32×32: Standard for most desktop browsers (replaces 16×16)
- 128×128: Chrome store and small Windows 8 start screen icon
- 152×152: iPad touch icon
- 167×167: iPad Retina touch icon
- 180×180: iPhone Retina icon
- 192×192: Google Developer web app recommendation
- 196×196: Android home screen icon
5. Color Variation
We should have the following color variation when we creating a logo:
All White (in a dark background)
Figure: Good Example - SSW logo design has three different color set
6. Source file: Illustrator/Sketch
Always keep a copy of the source file in Illustrator/Sketch for designers.