I18n & Localization · Nuxt SEO Utils · Nuxt SEO [NuxtSEO](https://nuxtseo.com/ "Home") - [Modules](https://nuxtseo.com/docs/nuxt-seo/getting-started/introduction) - [Tools](https://nuxtseo.com/tools) - [Pro](https://nuxtseo.com/pro) - [Learn SEO](https://nuxtseo.com/learn-seo/nuxt) [Releases](https://nuxtseo.com/releases) [1.4K](https://github.com/harlan-zw/nuxt-seo) [Nuxt SEO on GitHub](https://github.com/harlan-zw/nuxt-seo) [User Guides](https://nuxtseo.com/docs/seo-utils/getting-started/introduction) [API](https://nuxtseo.com/docs/seo-utils/api/breadcrumbs) [Releases](https://nuxtseo.com/docs/seo-utils/releases/v8) SEO Utils - [Switch to SEO Utils](https://nuxtseo.com/docs/seo-utils/getting-started/introduction) - [Switch to Nuxt SEO](https://nuxtseo.com/docs/nuxt-seo/getting-started/introduction) - [Switch to Robots](https://nuxtseo.com/docs/robots/getting-started/introduction) - [Switch to Sitemap](https://nuxtseo.com/docs/sitemap/getting-started/introduction) - [Switch to OG Image](https://nuxtseo.com/docs/og-image/getting-started/introduction) - [Switch to Schema.org](https://nuxtseo.com/docs/schema-org/getting-started/introduction) - [Switch to Link Checker](https://nuxtseo.com/docs/link-checker/getting-started/introduction) - [Switch to Site Config](https://nuxtseo.com/docs/site-config/getting-started/introduction) - [Switch to Skew Protection](https://nuxtseo.com/docs/skew-protection/getting-started/introduction) - [Switch to AI Ready](https://nuxtseo.com/docs/ai-ready/getting-started/introduction) Search…```k`` /` v8.1.7 - Playgrounds - [Discord Support](https://discord.com/invite/275MBUBvgP) ### Getting Started - [Introduction](https://nuxtseo.com/docs/seo-utils/getting-started/introduction) - [Installation](https://nuxtseo.com/docs/seo-utils/getting-started/installation) - [Troubleshooting](https://nuxtseo.com/docs/seo-utils/getting-started/troubleshooting) ### Core Concepts - [Canonical URL](https://nuxtseo.com/docs/seo-utils/guides/canonical-url) - [App Icons](https://nuxtseo.com/docs/seo-utils/guides/app-icons) - [Open Graph Images](https://nuxtseo.com/docs/seo-utils/guides/open-graph-images) - [Best Practice Default Meta](https://nuxtseo.com/docs/seo-utils/guides/default-meta) - [Enhanced Titles](https://nuxtseo.com/docs/seo-utils/guides/fallback-title) - [SEO Route Rules](https://nuxtseo.com/docs/seo-utils/guides/route-rules) - [I18n & Localization](https://nuxtseo.com/docs/seo-utils/guides/i18n) - [Nuxt Config SEO Meta](https://nuxtseo.com/docs/seo-utils/guides/nuxt-config-seo-meta) - [CLI](https://nuxtseo.com/docs/seo-utils/guides/cli) - [Inline Minification](https://nuxtseo.com/docs/seo-utils/guides/minification) Core Concepts # I18n & Localization [Copy for LLMs](https://nuxtseo.com/docs/seo-utils/guides/i18n.md) ## [Introduction](#introduction) Nuxt SEO Utils automatically sets the `` attribute and locale-based meta tags for your site. ## [How is Locale Used?](#how-is-locale-used) Nuxt SEO Utils will automatically set: - `` - Current locale based on your configuration - `og:locale` - OpenGraph locale (e.g., `en_US`, `ja_JP`) - Schema.org `inLanguage` - For WebSite, WebPage, and other structured data (when using [Nuxt Schema.org](https://nuxtseo.com/docs/schema-org/getting-started/introduction)) - `useBreadcrumbItems()` - Automatically handles locale-prefixed routes and translates labels via i18n keys (`breadcrumb.items.{routeName}.label`) - Fallback page titles - Automatically resolves titles from i18n translations using `pages.{routeName}.title` keys `og:locale` requires a locale format with underscore (e.g., `en_US`). If your locale is just `"en"`, the module won't set `og:locale` automatically. When `@nuxtjs/i18n` is configured with SEO head enabled, it handles `og:locale` directly and takes priority. ## [How Locale is Determined](#how-locale-is-determined) When `automaticDefaults` is enabled (default), the module sets the `lang` attribute using this priority: 1. **`@nuxtjs/i18n` or `nuxt-i18n-micro` module** - Automatically detected and integrated 2. **Site Config `currentLocale`** - Dynamic locale from `useSiteConfig()` 3. **Site Config `defaultLocale`** - Static default from `nuxt.config.ts` 4. **Fallback** - Defaults to `"en"` The locale is set with **low priority**, allowing you to override it manually if needed. ## [Setting up Nuxt SEO Utils for I18n](#setting-up-nuxt-seo-utils-for-i18n) If you're building a multilingual site, install `@nuxtjs/i18n`. For single language sites without `@nuxtjs/i18n`, set the locale via Site Config: nuxt.config.ts ``` export default defineNuxtConfig({ site: { defaultLocale: 'ja-JP' } }) ``` Set your locale as specific as possible using BCP 47 format (hyphen-separated). Instead of `en`, use `en-US`, `en-AU`, or whatever is appropriate for your site. The module automatically converts this to underscore format (`en_US`) for `og:locale`. ## [Dynamic Locale Changes](#dynamic-locale-changes) If you need to change the locale dynamically without using the I18n module, use `updateSiteConfig()`: ``` ``` ## [Manual Control](#manual-control) To manually control all locale settings, disable automatic defaults: nuxt.config.ts ``` export default defineNuxtConfig({ seo: { automaticDefaults: false } }) ``` Then set everything manually: app.vue ``` useHead({ htmlAttrs: { lang: 'ja-JP' } }) useSeoMeta({ ogLocale: 'ja_JP' }) ``` [Edit this page](https://github.com/harlan-zw/nuxt-seo-utils/edit/main/docs/content/2.guides/4.i18n.md) [Markdown For LLMs](https://nuxtseo.com/docs/seo-utils/guides/i18n.md) Did this page help you? [SEO Route Rules Utilise route rules for dynamic SEO meta tags.](https://nuxtseo.com/docs/seo-utils/guides/route-rules) [Nuxt Config SEO Meta Make use of the power of useSeoMeta inside your nuxt.config.](https://nuxtseo.com/docs/seo-utils/guides/nuxt-config-seo-meta) On this page - [Introduction](#introduction) - [How is Locale Used?](#how-is-locale-used) - [How Locale is Determined](#how-locale-is-determined) - [Setting up Nuxt SEO Utils for I18n](#setting-up-nuxt-seo-utils-for-i18n) - [Dynamic Locale Changes](#dynamic-locale-changes) - [Manual Control](#manual-control) [GitHub](https://github.com/harlan-zw/nuxt-seo) [ Discord](https://discord.com/invite/275MBUBvgP) ### [NuxtSEO](https://nuxtseo.com/ "Home") - [Getting Started](https://nuxtseo.com/docs/nuxt-seo/getting-started/introduction) - [MCP](https://nuxtseo.com/docs/nuxt-seo/guides/mcp) Modules - [Robots](https://nuxtseo.com/docs/robots/getting-started/introduction) - [Sitemap](https://nuxtseo.com/docs/sitemap/getting-started/introduction) - [OG Image](https://nuxtseo.com/docs/og-image/getting-started/introduction) - [Schema.org](https://nuxtseo.com/docs/schema-org/getting-started/introduction) - [Link Checker](https://nuxtseo.com/docs/link-checker/getting-started/introduction) - [SEO Utils](https://nuxtseo.com/docs/seo-utils/getting-started/introduction) - [Site Config](https://nuxtseo.com/docs/site-config/getting-started/introduction) - [Skew Protection](https://nuxtseo.com/docs/skew-protection/getting-started/introduction) - [AI Ready](https://nuxtseo.com/docs/ai-ready/getting-started/introduction) ### [NuxtSEO Pro](https://nuxtseo.com/pro "Home") - [Getting Started](https://nuxtseo.com/pro) - [Dashboard](https://nuxtseo.com/pro/dashboard) - [Pro MCP](https://nuxtseo.com/docs/nuxt-seo-pro/mcp/installation) ### [Learn SEO](https://nuxtseo.com/learn-seo "Learn SEO") Nuxt - [Mastering Meta](https://nuxtseo.com/learn-seo/nuxt/mastering-meta) - [Controlling Crawlers](https://nuxtseo.com/learn-seo/nuxt/controlling-crawlers) - [Launch & Listen](https://nuxtseo.com/learn-seo/nuxt/launch-and-listen) - [Routes & Rendering](https://nuxtseo.com/learn-seo/nuxt/routes-and-rendering) - [Staying Secure](https://nuxtseo.com/learn-seo/nuxt/routes-and-rendering/security) Vue - [Vue SEO Guide](https://nuxtseo.com/learn-seo/vue) - [Mastering Meta](https://nuxtseo.com/learn-seo/vue/mastering-meta) - [Controlling Crawlers](https://nuxtseo.com/learn-seo/vue/controlling-crawlers) - [SPA SEO](https://nuxtseo.com/learn-seo/vue/spa) - [SSR Frameworks](https://nuxtseo.com/learn-seo/vue/ssr-frameworks) - [SEO Checklist](https://nuxtseo.com/learn-seo/checklist) - [Pre-Launch Warmup](https://nuxtseo.com/learn-seo/pre-launch-warmup) - [Backlinks & Authority](https://nuxtseo.com/learn-seo/backlinks) ### [Tools](https://nuxtseo.com/tools "SEO Tools") - [Social Share Debugger](https://nuxtseo.com/tools/social-share-debugger) - [Robots.txt Generator](https://nuxtseo.com/tools/robots-txt-generator) - [Meta Tag Checker](https://nuxtseo.com/tools/meta-tag-checker) - [HTML to Markdown](https://nuxtseo.com/tools/html-to-markdown) - [XML Sitemap Validator](https://nuxtseo.com/tools/xml-sitemap-validator) - [Schema.org Validator](https://nuxtseo.com/tools/schema-validator) - [Keyword Idea Generator](https://nuxtseo.com/tools/keyword-generator) - [Keyword Research](https://nuxtseo.com/tools/keyword-research) - [SERP Analyzer](https://nuxtseo.com/tools/serp-analyzer) - [Domain Rankings](https://nuxtseo.com/tools/domain-rankings) Copyright © 2023-2026 Harlan Wilton - [MIT License](https://github.com/harlan-zw/nuxt-seo/blob/main/license) · [mdream](https://mdream.dev)