---
title: "What is Technical SEO?"
description: "See what technical SEO covers, why AI crawlers need it too, and which Nuxt SEO module fixes each gap."
canonical_url: "https://nuxtseo.com/learn-seo"
last_updated: "2026-10-08"
---

> Index of every page on this site: [llms.txt](https://nuxtseo.com/llms.txt)

## The Short Version

Technical SEO helps search engines discover, render, and index your public pages. AI answer engines like [ChatGPT](https://chatgpt.com), [Gemini](https://gemini.google.com), and [Perplexity](https://perplexity.ai) now sit alongside classic search results as a source of traffic, and your content needs to be machine-readable for both.

A page that depends on JavaScript needs a crawler capable of rendering it. Check the initial and rendered HTML.

## What Technical SEO Covers

| Area      | What It Does                                                   | Nuxt SEO Module                                                 |
| --------- | -------------------------------------------------------------- | --------------------------------------------------------------- |
| Discovery | Tells search engines and AI agents which pages to access       | [Robots](https://nuxtseo.com/docs/robots/getting-started/introduction)             |
| Structure | Lists URLs to help crawlers discover those pages               | [Sitemap](https://nuxtseo.com/docs/sitemap/getting-started/introduction)           |
| Identity  | Shares your site URL, name, and description across modules     | [Site Config](https://nuxtseo.com/docs/site-config/getting-started/introduction)   |
| Semantics | Describes page entities and supports eligible rich results     | [Schema.org](https://nuxtseo.com/docs/schema-org/getting-started/introduction)     |
| Health    | Catches broken links before they become a crawl signal problem | [Link Checker](https://nuxtseo.com/docs/link-checker/getting-started/introduction) |
| Visuals   | Provides images for social link previews                       | [OG Image](https://nuxtseo.com/docs/og-image/getting-started/introduction)         |

## Why It Matters

Broken links and inaccessible content can prevent crawlers from reaching your pages. Server-rendered HTML makes public content available without JavaScript execution. Each crawler has its own access rules and rendering support.

Nuxt's hybrid rendering (SSR, SSG, ISR) adds another layer: you need a consistent SEO strategy across rendering modes, not just one page that happens to work. Core Web Vitals, especially INP, factor in too. Google [recommends good Core Web Vitals](https://developers.google.com/search/docs/appearance/core-web-vitals) for page experience. Good scores do not guarantee rankings. Poor interactivity still costs you real users even when it doesn't cost you rank.

## What Nuxt SEO Does

Instead of configuring each concern separately:

```ts
// Without Nuxt SEO - scattered configuration
// robots.txt - manual file
// sitemap - separate package
// meta tags - per-page useHead calls
// schema.org - manual JSON-LD
// og images - external service or manual creation
```

Nuxt SEO handles it in one install:

```ts
export default defineNuxtConfig({
  modules: ['@nuxtjs/seo'],
  site: {
    url: 'https://example.com',
    name: 'My Site',
    description: 'The definitive guide to Technical SEO.'
  }
})
```

This gives you:

- Unified site config: all modules share the same brand and environment data
- AI crawler controls: configure robots rules for supported user-agent groups
- OG images: generated previews, with deployment requirements that depend on your renderer
- Smart sitemaps: automatic route discovery

## Do You Need This?

**Yes, if:**

- You're launching a production Nuxt application
- You don't want to manually maintain SEO plumbing

## Quick Wins

1. **Set your site URL**: essential for absolute URLs in your sitemap and social tags
2. **Audit for AI**: use `robots.txt` to manage AI crawler access
3. **Use [Schema.org](http://Schema.org)**: don't rely on crawlers guessing your content, define it explicitly
4. **Fix broken links**: use [Link Checker](https://nuxtseo.com/docs/link-checker/getting-started/introduction) to maintain technical health

## Start Here

- [SEO Checklist](https://nuxtseo.com/learn-seo/checklist): Complete pre-launch, post-launch, and ongoing monitoring checklist
- [Single Page Application (SPA) SEO](https://nuxtseo.com/learn-seo/spa-seo): The framework-agnostic guide to JS-heavy apps
- [Pre-Launch Warmup](https://nuxtseo.com/learn-seo/pre-launch-warmup): Prepare a crawlable site before you ship
- [Backlinks & Authority](https://nuxtseo.com/learn-seo/backlinks): Developer-friendly strategies for earning links

Published a page or deployed an SEO fix? [Google Search timelines](https://nuxtseo.com/learn-seo/google-search-timelines) explains discovery, crawling, indexing, and when search results can reflect the change.

## Framework Guides

- [Nuxt SEO Guide](https://nuxtseo.com/learn-seo/nuxt): Full learning path for Nuxt developers
- [Vue SEO Guide](https://nuxtseo.com/learn-seo/vue): Full learning path for Vue developers
- [Install Nuxt SEO](https://nuxtseo.com/docs/nuxt-seo/getting-started/installation): Get started in 2 minutes

## Sitemap

See the full [sitemap](https://nuxtseo.com/sitemap.md) for all pages.