This documentation explores the ways the Internet has or can use text as image replacement. Caveat: I'm not an expert in unicode, foreign languages, or screen readers.
- Extra-language symbols
- Whitespace
- Look-alike replacement symbols (homoglyph) and leetspeak
- Emoji (ideograms)
- Private and unassigned unicode
- Sequences (joining, and modifiers)
- Ligatures and "stacks"
- Emoticons
- Art (ASCII art, emoji compositions, etc.)
Relevant criteria: 1.1.1: Non-text Content (Level A)
Reading:
Technical Notes: