Images and accessibility
Images are a powerful way to enhance content, but using them correctly is essential to ensure your website remains accessible to everyone.
Best practices for images:
- Use images that support your content and are visually clear.
- Avoid busy images with excessive text, such as posters or flyers, as these are not accessible.
- Provide alt text for every image. Alt text should be concise, descriptive, and contextual to the content it accompanies.
- Follow recommended image dimensions to maintain consistent layout and page performance.
- Infographics should be simplified, clear, and supported with descriptive alt text or accompanying text summaries.
By following these best practices, your images will not only look great but also ensure your content is accessible to all visitors.
When in doubt:
Complex workflows, organizational charts, or images with a lot of embedded information can be tricky to make accessible. The web team or the Digital Accessibility Team can provide guidance to ensure all content meets accessibility standards.
Recommended image dimensions
For the best website performance and visual quality, save images as JPEG files whenever possible and use the lowest quality setting that still looks clean and sharp. A resolution of 72 DPI is recommended for web use. Following the recommended aspect ratios and pixel dimensions listed below for each image type will help ensure images display consistently and correctly throughout the website theme.
Slider/Carousel

Slider/Carousel recommended image size: 850px x 650px
Hero featured and subsite home

Hero featured and subsite home recommended image sizes: 1285px x 450px
Subpage featured image

Subpage featured image recommended image size: 730px x 260px
Featured Highlight

Featured Highlight recommended image size: 850px x 650px (image only)
Photo card

Photo card recommended image size: 1:1 (w:h) ratio; 350px x 350px
Homepage CTA (Campaign Photo & Text CTA)

Homepage CTA with image recommended image size: 590px x 590px
Testimonial and staff photo

Testimonial and staff photo recommended image size: 280px x 280px
Logo lists

Logo lists recommended logo image size: 150px x 100px
In-line images

Full width of Main region is 800px

1/2 width of Main region is 375px

1/3 width of Main region is 250px

1/4 width of Main region is 188px

Full width image inside Accordions is 720px