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Overview of Alt Text
Keep in mind the following points. Credit for the following list goes to https://webaim.org/techniques/alttext/
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- Adding alternative text to images is one of the easiest accessibility principles to learn and one of the hardest to master.
- Alternative text may be provided in the
alt
attribute or in the surrounding context of the image. - Every image must have an
alt
attribute. - Alternative text should:
- present the CONTENT and FUNCTION of the image.
- be succinct.
- Alternative text should not:
- be redundant (be the same as adjacent or body text).
- use the phrases "image of…" or "graphic of…".
- Appropriate alternative text depends heavily on the image's context.
- Alt text of a functional image (e.g.for example, an image within a link) should describe the function as well as the content.
- Decorative images still need an
alt
attribute, but it should be null (alt=""
).
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Alternative text must be included for every image posted on the wiki. Keep the alt text short; browsers truncate excessively long alt text. In addition, describe the important aspects of the image in the text. However, there is no need to precede alt text with "This is an image of" or explain its relative position on the page. Accessible technology users know when alt text is being read to them and require an equivalent experience to sighted users when it comes to the content of the image that they cannot see. |
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Adding Alt Text in the Insert Image Dialog Box
Confluence supports adding alternative text in the Image Properties dialog box.
- Open In the page on which you want to see the image.
- Select > Files and Images.
- change, click Edit.
- Select the image to insert.
- Click the image to display the image properties menu.
- Adding a border and reducing the size of the image can give it a more professional look.
- Click the Properties button.
- The image properties panel appears.
- Click Properties. The Image Properties dialog box appears.
- Enter Alt text in
In the Alt text field, enter alt text. Until CONFSERVER-34728 has been fixed, avoid using the following special characters in alt text:
- forward slash (/)
- colon (:)
- question mark (?)
- double quote (")
- semi colon (;)
Do not add text in the Title text field.
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Adding Alt Text in the
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Source Editor
To enter alt text in the Source Editor (XHTML), enter the ac:alt attribute in the ac:image element as follows.
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<ac:image ac:alt="caDSR logo"> |
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Until CONFSERVER-34728 has been fixed, avoid using the following special characters in alt text:
ac:image . |
An image inserted this way has alt text, which is evident to the user of a screen reader for the following image. Display
Checking Alt Text
To view the alt text, you can display the image properties in the your browser to . To view the alt text inline with the images, consider using a checker such as the WAVE Web Accessibility Evaluation Tool, available at the following site:
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