Select images that have a strong focal point. This helps to capture the attention of the visitors and convey the message of the site. Images with a strong focal point also look better on different devices and screen sizes1.
Do NOT use embedded text on images. Embedded text is the text that is part of the image file, not the HTML code. Embedded text is not accessible to screen readers, search engines, or translation tools. It also reduces the quality and clarity of the image, especially on high-resolution screens2.
Unique alt text should be populated for all images in all languages. Alt text is the text that describes the content and function of an image, and it is displayed when the image cannot be loaded or is accessed by screen readers. Alt text helps to improve the accessibility, SEO, and user experience of the site. It should be unique for each image and language, and it should be concise and relevant3.
Reference:
1: SAP SuccessFactors Recruiting: Candidate Experience Administration, Unit 4: Career Site Design and Accessibility, Lesson: Image Best Practices
2: SAP SuccessFactors Recruiting: Candidate Experience Administration, Unit 4: Career Site Design and Accessibility, Lesson: Image Best Practices
3: SAP SuccessFactors Recruiting: Candidate Experience Administration, Unit 4: Career Site Design and Accessibility, Lesson: Image Best Practices