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+[Back to 3 Understandable index](index.md)
+
+# 3.1.1 Language of Page
+
+- Level: A
+- Guideline: 3.1 Readable
+- Principle: 3 Understandable
+
+## What it is
+
+The default human language of each web page can be programmatically determined.
+
+## How to test
+
+- Check: The default human language of each web page can be programmatically determined.
+- Use the sufficient techniques below as acceptable methods when applicable.
+
+## Sufficient techniques (W3C)
+
+- H57: Using the language attribute on the HTML element
+- PDF16: Setting the default language using the /Lang entry in the document catalog of a PDF document
+- PDF19: Specifying the language for a passage or phrase with the Lang entry in PDF documents
+
+## Advisory techniques (W3C)
+
+- SVR5: Specifying the default language in the HTTP header
+
+## Resources
+
+- WCAG 2.2 SC: https://www.w3.org/TR/WCAG22/#language-of-page
+- Understanding: https://www.w3.org/WAI/WCAG22/Understanding/language-of-page.html
+- Quick reference: https://www.w3.org/WAI/WCAG22/quickref/?versions=2.2#language-of-page
+
+[Back to 3 Understandable index](index.md)