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swift-localization

Implement iOS localization with String Catalogs and LocalizedStringResource.

1|Updated Feb 24, 2026
Search Tags:#localization#swift#i18n#rtl#pluralization#string-catalogs#localizedstringresource
One-click install
npx skills add https://github.com/kmshdev/claude-swift-toolkit --skill swift-localization
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: swift-localization
Source: https://github.com/kmshdev/claude-swift-toolkit/tree/main/skills/swift-localization
Command: npx skills add https://github.com/kmshdev/claude-swift-toolkit --skill swift-localization

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Implement localization using String Catalogs and LocalizedStringResource to manage multilingual UI content and ensure translators can update strings without code modifications.

Core Features & Use Cases

  • String Catalogs (.xcstrings) support for visual localization workflow and built-in plural variants
  • LocalizedStringResource and LocalizedStringKey usage for type-safe, runtime-localized UI
  • RTL layout support and locale-aware formatting for numbers and dates across locales
  • Use Case: Prepare an app for a new locale by adding translations and enabling runtime language switching

Quick Start

Create a Localizable.xcstrings catalog and start using String(localized:) for UI text.

Frequently Asked Questions about swift-localization

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I implement localization using Swift String Catalogs?▼

You implement Swift String Catalogs localization by creating a Localizable.xcstrings file and using String(localized:) for UI text. This enables translators to update strings visually without modifying your codebase.

What is the best way to handle pluralization in iOS localization?▼

Handling pluralization in iOS localization is best done using String Catalogs, which provide built-in plural variants. You manage multilingual UI content and plural rules directly within the .xcstrings visual workflow.

Does Swift String Catalogs support RTL layout and locale-aware formatting?▼

Yes, String Catalogs localization supports RTL layout and locale-aware formatting for numbers and dates across locales. It provides guidance for handling right-to-left text and formatting locale-specific data for multilingual apps.

Can I use LocalizedStringResource for runtime language switching in iOS?▼

Yes, you can use LocalizedStringResource and LocalizedStringKey for type-safe, runtime-localized UI to enable runtime language switching. This approach is applicable to iOS apps on Xcode 15+ and iOS 16+.

Do I need Xcode 15 to use Swift String Catalogs for translation?▼

Yes, you need Xcode 15+ and iOS 16+ to use String Catalogs (.xcstrings) and LocalizedStringResource for managing user-facing text translation. These versions provide the necessary visual localization workflow and built-in plural variants.

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