There are many occasions when I hear a client say, "oh you need my logo, it is on my social media account, can you not use that?" The simple answer is no not really, so let's take a look at the basics that you need to know in order to ensure that your brand and logo remains professional and consistent.
Any logo that has been designed professionally will normally be produced as an EPS (Encapsulated Post Script) file. This type of file is scale-able to any size without loosing any quality and without seeing the dreaded pixelation.
So let's look at the application of a logo for use on print and online.
If you are using the logo on a website then the image should be based on the size of the image in terms of pixels and how large the image needs to be. You might have heard the suggestion that it’s important to save images for web at 72 ppi (or perhaps they even said 72 dpi if they didn’t understand the difference between ppi and dpi).
In fact, it is not important at all to set images to be 72 ppi for the web. It doesn’t hurt, but it’s not important. The ppi of an image makes no difference to the file size and neither does it make any difference to the visual appearance of an image on a monitor.
Where the 72 ppi myth originally comes from is that screen resolution, in the first Macintosh computers back in the mid 80s, used to be 72 ppi. But it’s not a fixed number and nowadays it’s a lot more on most monitors. Some screens are around 96 ppi, some are up around 120 ppi, while the latest screens on tablets are achieving mind blowing resolutions of over 500 ppi.
So if you are looking to use your logo on the web, then it is best said to either leave it to the designer to scale accordingly to the site and its use, or to double check that the image is not such a huge file that it will slow the site down, but large enough for the image not to look bad! Simples!