DES 4.4 Use the correct image format for the job
Different formats are suited to different types of image - the type you use affects the image quality and file size.
- Choose the correct format for the job:
- Use JPEGs for photographs;
- Use GIFs for line art, cartoons, blocks of colour, etc;
- SVG/PNG - are getting better supported by browsers but use with caution.
- Optimise the image:
- Balance file size and quality using design/image processing software;
- Scale to the exact dimensions used on the page:
- and specify the dimensions in the
img
element.
- and specify the dimensions in the
- Do not use ascii art.
Tip: Many image packages allow you to reduce the file size (of JEPs in particular) without any noticeable effect on quality.