In content implemented using markup languages that support the following text style properties, no loss of content or functionality occurs by setting all of the following and by changing no other style property:
- Line height (line spacing) to at least 1.5 times the font size;
- Spacing following paragraphs to at least 2 times the font size;
- Letter spacing (tracking) to at least 0.12 times the font size;
- Word spacing to at least 0.16 times the font size.
Exception: Human languages and scripts that do not make use of one or more of these text style properties in written text can conform using only the properties that exist for that combination of language and script.
Checklist – System Foundations
Typography
| Test | Priority | Automated test? |
|---|---|---|
| Are font faces correct? | High | None |
| Are font sizes correct? | High | None |
Checklist – Components
Breadcrumbs
| Test | Priority | Automated test? |
|---|---|---|
| Is the breadcrumb still usable when the user overrides text spacing properties? Is the breadcrumb still usable when the user overrides text spacing and zooms in to 400%? | High | None |
Forms
| Test | Priority | Automated test? |
|---|---|---|
| Is the field still usable when the user overrides text spacing properties? | High | None |
Additional resources
Parked here until I get the rest of this page filled out.
- Text spacing bookmarklet for a quick and dirty test of this criterion, by Steve Faulkner.