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8.20 WCAG 2.1 Success Criterion 3.1.1 − Language of Page

Ensure the primary language of a webpage is defined within the HTML code. The correct speaking language will be loaded by screen readers to read the words in the webpage.

A webpage sample in Chinese.

The example above is written in Chinese. When using screen readers, it is important for the tool to know the language of the webpage.

Before Rectification

A code snippet showing a plain HTML tag.

After Rectification

The same code snippet with the xml:lang attribute added.

In order for the screen reader to work correctly, the above language specification must be included in the HTML code.

WCAG 2.1 Reference: