This is something that I came across over 1 year ago, but it happened again recently, in a slightly different context, so I thought I’d cover the topic again.

Many people don’t realise this, but there are 2 types of jpg images:

RGB (its what most people use)

and CMYK (used by graphic design companies)…

Often, you cannot tell the difference, unless you use an image viewer like IrfanView… where, if you view the image properties, you will see the compression field will be either “jpeg” or “jpeg, cmyk”

The big problem, is that Internet Explorer and Chrome cannot display CMYK images, while Firefox, Opera, and Safari might be slow to display them.

Note: soon after publishing this post, I noticed that Chrome could actually display CMYK images… probably due to an update.

Here is an example:

Logo in RGB:

Logo in CMYK:

Obviously, you can only see the CMYK logo if you are using Firefox, Opera, Chrome, or Safari