raspu/Highlightr

Health v2 · maintenance only

Adoption not part of the score

1868 stars · 304 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

Highlightr is a Swift library for iOS and macOS that wraps highlight.js via JavaScriptCore to convert code strings into syntax-highlighted NSAttributedStrings. It supports 185 languages and 89 themes, including real-time highlighting through an NSTextStorage subclass. As of 2026 it is no longer actively maintained.

Use cases

• highlight code snippets in an iOS app
• render syntax-highlighted code in a macOS text view
• build a real-time code editor with live highlighting on Apple platforms
• convert a string of source code into an NSAttributedString with colors
• support many programming languages with automatic language detection
• apply custom themes to code display in Swift apps

When to choose

• you need syntax highlighting in an iOS or macOS app with broad language support
• you want NSAttributedString output for UITextView or NSTextView
• you prefer highlight.js themes and language coverage over a native parser

When to avoid

• you need an actively maintained dependency (the project is abandoned; consider HighlighterSwift)
• you need maximum performance for very large files
• you target platforms other than iOS or macOS

Facets

library · maturity abandoned

ui-components parser developer-tools text-editors frontend syntax-highlighting highlightjs nsattributedstring javascriptcore swift ios macos

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markdown · JSON · MCP: product_card(name="raspu/Highlightr")