Handles the grunt work of internationalization: detecting hardcoded strings, checking translation coverage, and flagging common i18n mistakes before they ship. Comes with a checker script that scans your codebase for untranslated text and missing locale files. The skill covers standard patterns for React, Next.js, and Python, plus RTL layout considerations and proper date/number formatting with the Intl API. Most useful when you're adding i18n to an existing codebase or auditing before a multi-language launch. The checklist and DO/DON'T sections are solid practical references, though you'll still need to choose and configure your actual i18n library.

skills.sh installs
570
GitHub stars
33.2K
last updated
Aug 21, 2026

Install

$ npx -y skills add davila7/claude-code-templates --skill i18n-localization --agent claude-code

Installs into .claude/skills of the current project.

Files

i18n & Localization

Internationalization (i18n) and Localization (L10n) best practices.


1. Core Concepts

TermMeaning
i18nInternationalization - making app translatable
L10nLocalization - actual translations
LocaleLanguage + Region (en-US, tr-TR)
RTLRight-to-left languages (Arabic, Hebrew)

2. When to Use i18n

Project Typei18n Needed?
Public web app✅ Yes
SaaS product✅ Yes
Internal tool⚠️ Maybe
Single-region app⚠️ Consider future
Personal project❌ Optional

3. Implementation Patterns

React (react-i18next)

import { useTranslation } from 'react-i18next';

function Welcome() {
  const { t } = useTranslation();
  return <h1>{t('welcome.title')}</h1>;
}

Next.js (next-intl)

import { useTranslations } from 'next-intl';

export default function Page() {
  const t = useTranslations('Home');
  return <h1>{t('title')}</h1>;
}

Python (gettext)

from gettext import gettext as _

print(_("Welcome to our app"))

4. File Structure

Sponsors

Details

Repository
github.com/davila7/claude-code-templates
First seen
Jun 3, 2026

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