Specifications for Website Images
Resolution and file formats for web images need to be much smaller than for print images so that they can load quickly.
The three main file formats used are JPG (JPEG), PNG and Gif.
In general, JPGs are used for (rectangular) photos while Gifs are used for cropped images with transparent backgrounds, such as logos, and animations.
Gif images do not use as many colours as JPGs and PNGs so the quality is much lower making them unsuitable for photos.
Instead, PNGs, which can also display images with a variety of transparency effects, can be used for both photos and transparent images.
If your image is saved in a different file format, such as Tiff, EPS or PSD, and you don’t have image editing software, don’t worry. We can do it for you as part of our design process.