STULabel

Benchmarks in the demo app show STULabel is several times faster than UILabel and UITextView, thanks to aggressive caching and efficient text scaling techniques that reduce layout overhead.

Supports asynchronous layout and rendering, allowing text processing on background threads to maintain smooth UI performance, especially beneficial for scrolling lists with complex scripts.

Offers customizable truncation tokens and multiple truncation scopes, enabling interactive elements like 'tap to read more' links within truncated text, as demonstrated in the demo app.

Provides fine-grained control over vertical alignment, baseline positioning, and content insets, with accurate handling of complex scripts and fonts, unlike UILabel's inconsistent behavior.