When developing your new website it is important that both you and your designer/developer think about and work on the images of the website. We need to think about there size, relevance, their effectiveness within the site. We also need to think about their quality and their relevance to the whole site or the particular page they are on.
We just love images. A website without any images is boring and even with a nice design, most of us would probably prefer one with a lot of images. Why is that? There are many reasons that explain why we think images are attractive. For example, visual information is very convenient. Instead of reading a lot of text, which takes time and effort, we rather quickly scan an image or a graph. Then, images can trigger all sorts of emotions and memories, which makes them very engaging. Also, a lot of people can better memorize visual information and often it’s easier to share than written content. At last, images can cross language barriers a lot better than text can.
Images are an easy way to improve the user experience of your website. 90 percent of all information that we perceive and that gets transmitted to our brains is visual.. Images can help you to attract attention and to guide your visitor’s line of sight. They can be of great value when it comes to presenting important information. Also are images a great emotion trigger that you can use to draw your visitors in and get them engaged in your content.
When using images, it is important that you know why. Don’t just use them to get rid of too much white space or because you have heard that people like them. For every image on your site, you should be able to answer two questions. (1) Why did you chose that image and not a different one? (2) Why did you place the image where you placed it, and not somewhere else? If you don’t know the answer to either one of these two questions, you should take a minute to think about it. Keep in mind that you should only use images that somehow support your content. Be it because they show some relevant information, because they proof a point you make elsewhere, or because they convey a feeling that supports your message.
For more information here is an in-depth article : http://www.1stwebdesigner.com/design/images-on-web-design-usability-guide