Customization
Answer
The following success criteria are set at a system level and are not things that individual creators need to worry about ensuring in library systems. They should only take care not to alter system wide settings in these areas, or break compatibility for user systems that allow customization.
WCAG Success Criteria
1.4.4 AA Resize Text
Text can be resized without assistive technology up to 200 percent.
1.4.8 AAA Visual Presentation
Foreground and background colors can be selected by the user.
Width is no more than 80 characters or glyphs (40 if CJK).
Text is not justified (aligned to both the left and the right margins).
Line spacing (leading) is at least space-and-a-half within paragraphs, and paragraph spacing is at least 1.5 times larger than the line spacing.
Text can be resized without assistive technology up to 200 percent in a way that does not require the user to scroll horizontally to read a line of text on a full-screen window.
1.4.10 AA Reflow
When content is increased in size, content reorders (while maintaining reading order) to limit scrolling in two dimensions.
1.4.12 AA Text Spacing
Functionality is not lost by increasing line height, paragraph, letter or word spacing.
Examples:
If you incorporate complex html or code into your projects, do
- check to ensure additions have not removed the ability to resize text, change spacing, affect reflow, or adjust color.
- be careful using code you didn't write if you aren't sure what it does or what extra effects it might have.