Seo Guide

Boost WooCommerce SEO: Auto-Translate & Localize Prices to EUR

Published April 24, 2026

Boost WooCommerce SEO: Auto‑Translate & Localize Prices to EUR

International shoppers expect a seamless experience: product descriptions in their language, prices in a familiar currency, and fast page loads. With SiteLocaleAI, you can turn a standard WooCommerce store into a truly global shop without a third‑party SaaS. This guide walks you through the steps to:
1. Translate every page on the fly using your own LLM API key.
2. Convert USD prices to EUR with psychological rounding (e.g., €19.99 → €20).
3. Pre‑render translated pages for search engines so your SEO juice stays intact.

1. Install the SiteLocaleAI JavaScript library

SiteLocaleAI is a drop‑in, framework‑agnostic script. Add it to your theme’s header.php (or any place that loads before the closing </head> tag):

<script src="https://cdn.sitelocaleai.com/v1/site-locale.min.js"></script>
<script>
  // Initialize with your LLM API key (Claude, GPT‑4o‑mini, etc.)
  SiteLocaleAI.init({
    apiKey: 'YOUR_LLM_API_KEY',
    defaultLang: 'en',
    supportedLangs: ['en', 'de', 'fr', 'es', 'it'],
    priceConfig: {
      sourceCurrency: 'USD',
      targetCurrency: 'EUR',
      rounding: 'psychological' // rounds to .99, .95, .00, etc.
    }
  });
</script>

Tip: Keep the key in a server‑side environment variable and inject it via wp_localize_script to avoid exposing it in the client source.

2. Localize prices on the client side

SiteLocaleAI scans the DOM for elements with a data-price attribute. In WooCommerce templates, wrap the price like this:

<?php
  $price_usd = wc_get_price_including_tax( $product );
?>
<span class="price" data-price="<?php echo esc_attr( $price_usd ); ?>">$<?php echo $price_usd; ?></span>

When the page loads, the script replaces the content with the converted EUR amount, applying psychological rounding:

// Example output after conversion
<span class="price" data-price="19.99">€20.00</span>

If you need custom rounding logic, extend the priceConverter callback:

SiteLocaleAI.setPriceConverter((usd) => {
  const eur = usd * 0.92; // example conversion rate
  // Psychological rounding to nearest .99 or .00
  const rounded = Math.round(eur * 100) / 100;
  return rounded % 1 === 0 ? `${rounded}.00` : `${Math.floor(rounded)}.99`;
});

3. Translate product titles, descriptions, and UI strings

SiteLocaleAI automatically translates any element with a data-i18n attribute. Update your WooCommerce templates:

<h1 data-i18n="product-title"><?php echo esc_html( $product->get_name() ); ?></h1>
<div data-i18n="product-description"><?php echo wp_kses_post( $product->get_description() ); ?></div>

The library sends the source text to your LLM, receives the target language, and swaps the innerHTML. You can also pre‑translate static strings in a JSON file and load them via SiteLocaleAI.loadTranslations('de', '/path/to/de.json').

4. SEO‑friendly pre‑rendering with the CLI

Search engines struggle with client‑side translations. SiteLocaleAI ships a CLI tool that pre‑renders every language version into static HTML files, which you can serve to crawlers via a simple rewrite rule.

# Install the CLI globally (Node.js required only for the build step)
npm i -g @sitelocaleai/cli

# Generate pre‑rendered pages for German and French
site-locale-cli render \
  --source ./public \
  --output ./public/ssr \
  --langs de,fr \
  --api-key $LM_API_API
_KEY


``After
/

 generated the, the andn your `.xml` to point to the language‑specific URLs:

```xml
<url>
  <loc>https://yourstore.com/de/produkt-name/</loc>
  <xhtml:link rel="alternate" hreflang="de" href="https://yourstore.com/de/produkt-name/"/>
</url>
<url>
  <loc>https://yourstore.com/fr/nom-produit/</loc>
  <xhtml:link rel="alternate" hreflang="fr" href="https://yourstore.com/fr/nom-produit/"/>
</url>

Now Google indexes the German and French pages as separate entities, preserving your SEO equity.

5. WordPress plugin alternative (no Node.js needed)

If you prefer a UI‑driven setup, install the SiteLocaleAI WordPress plugin from the repository. After activation:
1. Add your LLM API key in Settings → SiteLocaleAI.
2. Choose the target currencies and rounding mode.
3. Enable “SEO pre‑render” to let the plugin run the CLI in the background.

The plugin automatically injects the script and adds the data-price/data-i18n attributes to WooCommerce templates, so you can skip the manual PHP edits.

6. Testing & monitoring

Speed: Because translation happens on the client, page load times remain fast. Use Chrome DevTools → Network to verify the extra request size (~10 KB).
Accuracy: Spot‑check a few product pages in each language. Adjust the LLM prompt via SiteLocaleAI.setPromptTemplate() if needed.
SEO: Run a crawl with Screaming Frog or Ahrefs to ensure each language URL returns a 200 status and contains the correct <title> and <meta description>.

7. Internal resources

Detailed installation guide: https://sitelocaleai.com/docs/installation
Price localization options: https://sitelocaleai.com/docs/price-localization

Ready to go global?

With just a few lines of code, SiteLocaleAI lets you serve fully translated, price‑localized WooCommerce pages that search engines love. Try SiteLocaleAI today and watch your European traffic and conversions rise.

Back to blog