Tutorial

Translate WordPress Blog to Spanish with SEO-Ready SiteLocaleAI

Published March 22, 2026

Translate Your WordPress Blog to Spanish with SEO‑Ready SiteLocaleAI

Reaching Spanish‑speaking audiences can dramatically increase traffic, but you also need to keep search engines happy. SiteLocaleAI lets you self‑host a translation engine, localize prices, and pre‑render SEO‑friendly pages—all from a single drop‑in JavaScript library or the official WordPress plugin. This tutorial walks you through setting up the plugin, configuring your LLM, and generating indexable Spanish pages.

1. Prerequisites

A WordPress site (any version 5.5+). n- An LLM API key (Claude, GPT‑4o‑mini, or any compatible provider).
Access to your server’s terminal for the optional CLI step.

2. Install the SiteLocaleAI Plugin

From your WordPress admin, go to Plugins → Add New.
Search for "SiteLocaleAI" and click Install Now.
Activate the plugin.

No Node.js required – the plugin bundles the JavaScript library and handles API calls server‑side.

3. Configure the Plugin

Navigate to Settings → SiteLocaleAI and fill in the fields:

Field	Description
LLM API Key	Your secret key (e.g., `sk-xxxx`).
Default Language	`en` (English) – the language of your original content.
Target Languages	Add `es` for Spanish.
Price Rounding	Enable to apply psychological rounding per currency.
SEO Pre‑render	Turn on to generate static HTML for crawlers.

Save changes. The plugin now injects the SiteLocaleAI script into every page.

4. Verify the Front‑End Integration

Open any post on your site and inspect the source. You should see a script similar to the one below (the plugin adds it automatically):

<script src="https://cdn.sitelocaleai.com/v1/site-locale.js"></script>
<script>
  SiteLocale.init({
    apiKey: "YOUR_LLM_API_KEY",
    defaultLang: "en",
    targetLangs: ["es"],
    rounding: true,
    seo: true
  });
</script>

Replace YOUR_LLM_API_KEY with the key you entered in the settings. The seo: true flag tells SiteLocaleAI to generate hidden <link rel="alternate" hreflang="es"> tags and to serve pre‑rendered HTML for bots.

5. Enable SEO Pre‑Rendering (CLI)

While the plugin handles most cases, the CLI tool gives you full control over static generation, which is ideal for large blogs.

# Install the CLI globally (optional)
npx sitelocaleai install

# Run pre‑rendering for Spanish
npx sitelocaleai seo --lang es --output ./public/es

The command crawls your site, translates each post, applies price rounding, and writes static HTML files to ./public/es. Deploy this folder to your web server or CDN. Search engines will now index the Spanish version directly, boosting international SEO.

For a deeper dive, see the SEO pre‑rendering docs.

6. Price Localization with Psychological Rounding

If you sell products, SiteLocaleAI can automatically convert and round prices. Example configuration in the plugin:

{
  "priceLocalization": {
    "enabled": true,
    "rounding": "psychological",
    "currencies": {
      "USD": "$",
      "EUR": "€",
      "MXN": "$"
    }
  }
}

A price of $12.99 becomes $13 in the US, while the same amount converts to €12 in Spain, using the most common psychological thresholds.

7. Test the Spanish Version

Visit https://yourdomain.com/es/your-post-slug.
Verify that:
- All text is in Spanish.
- Prices are rounded appropriately.
- The <head> contains <link rel="alternate" hreflang="es" href="https://yourdomain.com/es/your-post-slug" />.
- The page source shows the translated content (use View source, not just Inspect).

You can also use Google’s URL Inspection tool to confirm that Google sees the rendered HTML.

8. Ongoing Maintenance

Update LLM keys when they rotate.
Re‑run the CLI after major content changes to keep the static Spanish folder fresh.
Monitor the SiteLocaleAI dashboard (available under Settings) for translation errors or price‑rounding anomalies.

9. Internal Resources

Detailed installation steps: Installation guide
Full SEO workflow: SEO pre‑rendering docs

10. Ready to Go International?

With just a few clicks, your WordPress blog can serve native‑speaking Spanish readers while staying fully indexable by Google. Try SiteLocaleAI today and watch your global traffic grow.

Happy translating!

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