WCAG version: 2.1
Collection of success criterion published in WCAG version 2.1 in 2018. Notably adds mobile, low vision, and cognitive updates.
3.1.3 Unusual Words
Unusual terms, jargon, or figurative language should be avoided when possible, or explained the first time they appear.
3.1.4 Abbreviations
Abbreviations and acronyms should be avoided when possible, or explained the first time they appear.
3.1.5 Reading Level
If content requires reading skills above lower secondary education (around 9th grade), provide a simpler version, a summary, a visual aid, or a spoken version to help with understanding.
3.1.6 Pronunciation
If a word can be pronounced in different ways with different meanings, the intended meaning must be clarified to avoid confusion or ambiguity.
3.2.1 On Focus
No unexpected changes must happen when an element receives focus (like open a popup, move focus, submit a form).
3.2.2 On Input
No unexpected changes must happen when a field value changes (like auto-submit, reload, open new page).
3.2.3 Consistent Navigation
Navigation elements (like menus, links, search) must appear in the same place and order across pages.
3.2.4 Consistent Identification
Elements with the same function must look, behave, and be labeled the same way across pages.
3.2.5 Change on Request
Major changes (like open dialog, navigate, submit) must only happen when explicitly requested.
3.3.1 Error Identification
Errors and validation must be clearly identified and described in text, not just visually (like color or highlighting).
