Unicode Text Processing & Interoperability
Understand how digital text works across devices and applications. Explore clear, technical guides to Unicode, text encoding, fonts, accessibility and cross-platform compatibility.
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Unicode Character Model & Properties
8 articlesCode points, Unicode properties, grapheme clusters and the difference between characters and visible text.
Articles in this topic
- Unicode Code Points, Characters, Grapheme Clusters, and Glyphs
- Unicode Scalar Values, Surrogates, and UTF-16
- Unicode General Categories and Character Properties
- Unicode Script and Script_Extensions
- Combining Marks, Diacritics, and Canonical Ordering
- Grapheme Clusters and User-Perceived Characters
- Default-Ignorable Code Points and Invisible Data
- Unicode Versioning and Character Stability
Styled Text & Special Characters
8 articlesMathematical alphanumeric symbols, decorative text and compatibility boundaries.
Articles in this topic
Character Encoding & Data Interchange
8 articlesUTF-8, UTF-16, serialization and reliable text exchange between systems.
Articles in this topic
Normalization, Casing, Collation & Search
10 articlesNormalization forms, locale-aware casing, sorting and matching.
Articles in this topic
- Unicode Normalization: NFC and NFD
- Unicode Normalization: NFKC and NFKD
- Canonical Combining Class and Ordering
- Normalization of Styled Unicode Text
- Unicode Case Folding
- Locale-Sensitive Case Mapping
- Unicode Collation Algorithm
- Accent-Insensitive Text Search
- Canonical-Equivalent Text Matching
- Normalization and Data Consistency
Text Segmentation, Regex & Cursor Behavior
8 articlesWord boundaries, grapheme-aware editing, regular expressions and cursor movement.
Articles in this topic
Fonts, Shaping & Text Rendering
10 articlesGlyph coverage, font fallback, shaping and rendering differences across devices.
Articles in this topic
- Font Coverage and Unicode Support
- Font Fallback Mechanisms
- Missing Glyphs and Tofu Boxes
- Text Shaping vs. Glyph Rendering
- Ligatures and OpenType Features
- HarfBuzz Text Shaping
- CSS unicode-range and Font Subsetting
- Cross-Platform Text Rendering
- Font Metrics and Line Height
- Combining Mark Placement in Fonts
Clipboard, Editors & Markup
9 articlesCopy and paste behavior, rich text, plain text and editor interoperability.
Articles in this topic
- Clipboard text/plain vs text/html
- Unicode Copy/Paste Round Trips
- Invisible Characters in Text Editors
- Rich Text to Plain Text Conversion
- contenteditable and Unicode Text
- Markdown Escaping and Special Characters
- HTML Character References vs. Unicode Characters
- Text Selection and Grapheme Clusters
- Unicode Text in Spreadsheet Import/Export
Multilingual Text & Input Systems
9 articlesInput methods, script handling, directionality and multilingual processing.
Articles in this topic
- Unicode Bidirectional Algorithm (UAX #9)
- Right-to-Left Web Interfaces
- BCP 47 Language Tags and Unicode
- IME Composition Events
- Dead Keys and Combining-Character Input
- Transliteration vs. Script Conversion
- Mixed-Script Text Processing
- Unicode Line Breaking Across Scripts
- Vertical Writing Systems on the Web
Emoji & Symbol Sequences
6 articlesVariation selectors, emoji presentation, modifiers and joined sequences.
Articles in this topic
Identifiers, Confusables & Security
7 articlesLookalike characters, identifier policy, spoofing risks and safe handling.
Articles in this topic
Text Accessibility
5 articlesHow assistive technologies interpret styled text, symbols and nonstandard characters.
Articles in this topic
Text APIs & Implementation Patterns
8 articlesPractical patterns for Unicode-aware applications and cross-platform text handling.