Tutorial

Translate WooCommerce Prices to EUR with SiteLocaleAI

Published September 22, 2026

Translating WooCommerce Prices to EUR with SiteLocaleAI

International shoppers expect prices in their local currency, and search engines reward sites that serve fully translated content. SiteLocaleAI makes this painless: a self‑hosted JavaScript library that leverages your own LLM API key, handles psychological price rounding, and even pre‑renders translated pages for SEO.

1. Prerequisites

A WooCommerce store running on WordPress (any version that supports plugins).
An LLM API key (Claude, GPT‑4o‑mini, etc.).
Node.js installed locally for the CLI (optional if you use the WordPress plugin only).

2. Install the SiteLocaleAI library

You can add the library directly to your theme or via a simple plugin. The script is framework‑agnostic, so it works with React, Vue, or plain HTML.

<!-- Add this to your theme's header.php or via a custom plugin -->
<script src="https://cdn.sitelocaleai.com/v1/sitelocaleai.min.js"></script>

If you prefer a package manager, run:

npm install @sitelocaleai/core

3. Initialize the library with your LLM key

Create a small JavaScript file (e.g., sitelocale-config.js) and enqueue it in WordPress.

// sitelocale-config.js
window.SiteLocaleAI = new SiteLocaleAI({
  apiKey: 'YOUR_LLM_API_KEY', // keep this secret – use a server‑side proxy if needed
  targetLanguage: 'en', // default site language
  fallbackLanguage: 'en',
  priceLocalization: {
    enabled: true,
    currency: 'EUR',
    rounding: 'psychological' // applies .99, .95, etc.
  }
});

// Attach to WooCommerce price elements after DOM load
window.addEventListener('DOMContentLoaded', () => {
  const priceElements = document.querySelectorAll('.woocommerce-Price-amount');
  priceElements.forEach(el => {
    const usd = parseFloat(el.dataset.priceUsd || el.textContent.replace(/[^0-9.]/g, ''));
    if (!isNaN(usd)) {
      SiteLocaleAI.convertPrice(usd, 'USD', 'EUR').then(eur => {
        // Apply psychological rounding
        const rounded = SiteLocaleAI.roundPrice(eur, 'psychological');
        el.textContent = `€${rounded.toLocaleString('de-DE')}`;
        el.dataset.priceEur = rounded;
      });
    }
  });
});

Key points
- convertPrice calls the LLM to fetch the latest exchange rate (or you can supply a static rate).
- roundPrice implements the psychological rounding strategy (e.g., 19.99 → 19.95).
- The script updates any element with the class woocommerce-Price-amount, which is the default WooCommerce price selector.

4. Enable SEO‑friendly pre‑rendering

Search engines struggle with client‑side translations. SiteLocaleAI’s CLI can pre‑render static HTML for each target language, ensuring crawlers see fully translated pages.

# Install the CLI globally (once)
npm i -g @sitelocaleai/cli

# Run the pre‑render for German (de) and French (fr)
sitelocaleai prerender \
  --src ./public \
  --out ./public/translated \
  --languages de fr \
  --api-key YOUR_LLM_API_KEY

The CLI:
1. Crawls your site, collects translatable text, and calls the LLM.
2. Generates static HTML files under ./public/translated/de and ./public/translated/fr.
3. Rewrites price elements using the same rounding logic.

You can then point your Nginx/Apache configuration to serve the appropriate folder based on the Accept‑Language header or a URL prefix (/de/, /fr/).

5. WordPress plugin shortcut (no Node required)

If you’d rather avoid manual scripting, SiteLocaleAI offers a lightweight plugin:
1. Upload the sitelocaleai.zip file via Plugins → Add New → Upload Plugin.
2. Activate it and navigate to Settings → SiteLocaleAI.
3. Paste your LLM API key, enable “Price Localization”, set the target currency to EUR, and choose “Psychological Rounding”.
4. Save. The plugin injects the same script shown above and automatically adds the necessary data attributes to price elements.

The plugin also adds a SEO Pre‑Render button that triggers the CLI on your server (requires PHP exec). This is handy for non‑technical store owners.

6. Testing the implementation

Open your store in an incognito window.
Use a VPN or Chrome’s developer tools to simulate a European IP.
Verify that every price now shows the euro sign and ends with .95, .99, or .49.
Inspect the page source (Ctrl+U). You should see the translated HTML, not just a script placeholder – a good sign for SEO.

7. Monitoring and fine‑tuning

Analytics – Track conversion rates per currency in Google Analytics.
A/B testing – Compare the default rounding (.00) against the psychological option.
Cache busting – If you change the exchange rate source, clear the CDN cache to avoid stale prices.

8. Resources

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

9. Ready to go?

With just a few lines of code, your WooCommerce store can serve euro‑priced, SEO‑friendly pages to millions of European shoppers. No third‑party translation services, no hidden fees – you stay in control of your data and costs.

Try SiteLocaleAI today and watch your international sales grow. 🚀

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