• Be concise but descriptive: The alt text should be brief, typically under 125 characters, but still convey the key information or purpose of the image.
• Focus on the function: Describe the content or purpose of the image. If the image serves a decorative purpose (like a background or icon), it can be marked as null (empty) alt text (alt="").
• Use plain language: Avoid jargon and complex language. Use simple, clear words that most people can understand.
• Don't repeat information already in the text: If the image's content is described in the text nearby, don’t duplicate that information in the alt text.

Alt Text for Graphs and Charts

Key Points:

• Focus on the data and trends, not the visual aspects (e.g., colors or design).
• Include the axis labels and what they represent.
• Describe the key trends or patterns shown in the graph/chart.
• If possible, include the units of measurement and legend/key if it’s a complex chart.

Example for a Bar Graph:

Example for a Line Chart:

Alt Text for Medical Images

Key Points:

• Describe the relevant features of the image, including anatomy, medical conditions, or procedures depicted.
• Use appropriate medical terminology where necessary but ensure the text is still understandable.
• Focus on specifics: Identify organs, areas of concern (e.g., injury, infection), and other relevant details.

Example for an X-ray Image:

Example for a Medical Diagram of the Heart:

Alt Text for Infographics

Key Points:

• Describe the overall topic and what it’s meant to convey.
• Identify and summarize key points or sections in the infographic.

Example for an Infographic:

Alt Text for Complex Diagrams or Flowcharts

Key Points:

• Describe the structure: Outline the flow or relationship between different components or steps.
• Summarize important connections or outcomes.

Example for a Flowchart:

Alt Text for Tables

Key Points:

• Summarize the key data presented in the table.
• Provide context for what the data shows (e.g., trends, comparisons).

Example for a Table: