# WCAG 2.2 – 4.1.1 Parsing

- Level: A
- Principle: 4 Robust
- Guideline: 4.1 Compatible
- Introduced in: WCAG 2.0
- Removed: this rule has not been part of the standard since WCAG 2.2.

## What the rule requires

This rule was removed in WCAG 2.2. It required a few basics: properly closed and nested elements, no duplicate attributes and unique IDs. Modern browsers and assistive technology cope with such code errors; real problems are covered by other rules.

## How to get it right

Clean HTML is still a good idea. Check your code with the W3C validator.

## Who benefits

- Blind people

## Sources

- [This rule on wcag.dehl.net](https://wcag.dehl.net/en/wcag/4-1-1/)
- [Official W3C explanation](https://www.w3.org/WAI/WCAG22/Understanding/parsing)
- [Techniques (WCAG Quick Reference)](https://www.w3.org/WAI/WCAG22/quickref/#parsing)

_Plain-language explanation. Only the original W3C text is normative._