Web Standard: Graphic Formats and File Sizes

Definitions

A graphic is an image, including photos, logos, banners, icons, maps, charts (including bar charts, pie charts, flow charts and organizational charts), graphs and other images.

Content Requirements

  • Use only GIF (.gif), JPEG (.jpg, .jpeg), or PNG (.png) formats.
  • Optimize web images. Reduce file size as much as possible while retaining acceptable visual quality.
  • Do not use large images and reduce their size using HTML. These images slow download.

About this Standard

Effective date: 09/28/2005
Date approved: 09/12/2012
Web Council review by: 09/02/2014 (or earlier if deemed necessary by the Web Council)