Inline Minification · 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

# Inline Minification

[Copy for LLMs](https://nuxtseo.com/docs/seo-utils/guides/minification.md)

Nuxt SEO Utils automatically minifies inline `<script>` and `<style>` tags in your SSR responses. This is enabled by default in production builds.

## [How It Works](#how-it-works)

The module provides two complementary minification modes that can be toggled independently.

### [Build Mode](#build-mode)

At build time, the module has access to native tooling for full minification:

- **JavaScript**: Minified with [Rolldown](https://rolldown.rs/) (Vite 8+) or [esbuild](https://esbuild.github.io/) (Vite 7), automatically detected
- **CSS**: Minified with [lightningcss](https://lightningcss.dev/) (full CSS optimization)

This applies to:

- Static scripts and styles defined in `app.head` within your `nuxt.config`
- All inline scripts and styles in prerendered/generated route HTML

### [Runtime Mode](#runtime-mode)

For dynamic SSR where scripts are generated per request (hydration payloads, `useHead()` injections), the module registers an [Unhead](https://unhead.unjs.io/) `ssr:render` plugin that minifies `HeadTag` content before it's serialized to HTML.

This uses lightweight pure JS minifiers with zero native dependencies, ensuring compatibility with any deployment target (serverless, edge, Docker).

## [Configuration](#configuration)

Minification is enabled by default. You can configure it in your `nuxt.config`:

Both (default)

Build only

Runtime only

Disabled

```
export default defineNuxtConfig({
  seo: {
    minify: true,
  },
})
```

```
export default defineNuxtConfig({
  seo: {
    minify: { build: true, runtime: false },
  },
})
```

```
export default defineNuxtConfig({
  seo: {
    minify: { runtime: true, build: false },
  },
})
```

```
export default defineNuxtConfig({
  seo: {
    minify: false,
  },
})
```

## [What Gets Minified](#what-gets-minified)

| Content | Build Mode | Runtime Mode |
| --- | --- | --- |
| `app.head` scripts/styles | Rolldown or esbuild / lightningcss | n/a (static) |
| Prerendered route HTML | Rolldown or esbuild / lightningcss | n/a (static) |
| Hydration payload (`__NUXT__`) | n/a (dynamic) | Lightweight JS |
| `useHead()` injected scripts | n/a (dynamic) | Lightweight JS |
| `useHead()` injected styles | n/a (dynamic) | Lightweight CSS |

## [What Gets Skipped](#what-gets-skipped)

The following are skipped by the JS minifier:

- JSON script types (`application/ld+json`, `application/json`) are minified via `JSON.parse`/`JSON.stringify` instead of JS minification
- `importmap` and `speculationrules` script types are left completely untouched
- External scripts (with `src` attribute)

## [Performance](#performance)

Build mode minification has no runtime cost. Runtime mode adds minimal overhead per request since the lightweight minifiers are simple single-pass transforms (comment stripping, whitespace collapsing) with no parsing or AST construction.

[Edit this page](https://github.com/harlan-zw/nuxt-seo-utils/edit/main/docs/content/2.guides/6.minification.md)

[Markdown For LLMs](https://nuxtseo.com/docs/seo-utils/guides/minification.md)

Did this page help you?

[CLI Use the nuxt-seo-utils CLI to generate favicon and icon variants.](https://nuxtseo.com/docs/seo-utils/guides/cli) [Config Configuration options for Nuxt SEO Utils module.](https://nuxtseo.com/docs/seo-utils/api/config)

On this page

- [How It Works](#how-it-works)
- [Configuration](#configuration)
- [What Gets Minified](#what-gets-minified)
- [What Gets Skipped](#what-gets-skipped)
- [Performance](#performance)

[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 "Nuxt SEO Pro")

- [Getting Started](https://nuxtseo.com/pro)
- [Dashboard](https://nuxtseo.com/pro/dashboard)
- [Pro MCP](https://nuxtseo.com/pro/docs/getting-started/mcp-setup)

### [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)