Web Development
Web Developer Guidelines
Visual Design Recommendations

Checkpoint 5.1 - Core

Images are correctly created and optimized for web page use

DEECD Requirement

DEECD Guideline

While images can add visually to the appearance of a web page and contribute to the information presented, they can also compromise a web page and the information quality if used inappropriately.

Every image on the web page requires a connection to the server, so many images on a web page can contribute to a longer download time. Additionally the physical size of the image can cause longer than necessary download times for the user. Therefore, it is important to ensure that all images on a page have been optimized for quality and size.

Requirement

Always analyse images on a page using a browser and ensure the following points are met:

  • Images are used properly in the context of the document
  • The overall number of images is justified
  • Images appear of a good quality
  • Images do not cause horizontal scrolling

Checking Tool

  • Browse through the images on the page to ensure they are used appropriately
  • Internet Explorer - AIS Toolbar: Images > Image List [New Window]
  • Firefox - Web Developer's Toolbar: Images > Display Image File Sizes
 

Back to top