Missing alt text (Table)
Requirements for 508 compliance
Use a summary or a caption when displaying data tables.
Watch video (1:39 mins)
Check to see if a caption or alternate text summary has been added to data tables
To determine whether Alternate Text has been applied to a Data Table
- Run the accessibility checker: "Missing Alt Text: Tables"
Note: This test only works when the Table style is set to 'Table Grid'.
To determine whether a caption has been applied to a Data Table
- On the References Tab, in the Captions Group, Select Cross-reference
- The Cross-reference Dialog Box appears
- If tables have proper cross-references then the tables will show in this dialog box.
Note: This requirement is for either a caption or an alternate text summary, but having both a caption and a summary is more accessible.
Watch video (2:16 mins)
To add an alternate text description to a data table
- Place the cursor anywhere in the table
- On the Table Tools Tab, in the Layout Sub-Tab, in the Table Group, Select Properties
- The Table Properties Dialog Box appears
- In the Alt Text Tab of the Table Properties Dialog Box, insert text in the Description field. The text should orient a non-sighted user on the table's design and content.
Note: The Title field is not necessary for accessibility. It can be left blank.
To add a caption to a data table
- Place the cursor anywhere in the table
- On the References Tab, in the Captions Group, Select Insert Caption
- The Caption Dialog Box appears
- Enter a descriptive caption in the Caption field. The caption description should ideally make sense when spoken in isolation. This makes it easy for screen reader users to access and use a list of tables.
Note: Once a caption has been added to a table, it can be programmatically cross-referenced from elsewhere in the document. Cross-referencing ensures that table numbers are correct even when new tables are added, or tables deleted. Cross-referencing also makes it easier for people with low or no vision to navigate the document. To add a cross reference to a data table:
- Place the cursor where the cross-reference is to go in the text of the document
- On the References Tab, in the Captions Group, Select Cross-reference
- The Cross-reference Dialog Box appears
- Select the desired cross-reference options
- The cross-reference becomes a selectable, navigable item in the document's text
Use a summary or a caption when displaying data tables.
Correct:
(Select the image to download example file in MS Word format)
Incorrect:
(Select the image to download example file in MS Word format)
Use a summary or a caption when displaying data tables.
Sighted users can quickly scan tables to understand their purpose, but many assistive technology users navigate with the keyboard. These users need a table summary or caption to describe the purpose of a table.
Legal References
508 references:
1194.22(a); 1194.31(a); 1194.31(b).
WCAG references:
No WCAG coverage.
All Microsoft Word Requirements



