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How to build a search engine for your website that converts

If you’re wondering how to build a search engine for your website, you’re already ahead of 70% of ecommerce brands. Smart onsite search drives higher conversion, average order value (AOV), and retention. Clerk.io makes it simple—with AI, personalization, and seamless integration for platforms like Shopify, WooCommerce, Magento, and more.

Why building a search engine matters in ecommerce 

Visitors who use search are up to 6x more likely to convert than casual browsers. But generic search bars often frustrate users with irrelevant results or no results at all.

The solution? Build a custom search engine that’s:

  • Instant: results appear as they type

  • Smart: understands synonyms, typos, and context

  • Personalized: shows products they’re most likely to buy

  • Trackable: backed by real-time analytics

Clerk.io helps you build that engine in just a few steps.

Step 1: Index your data

To build a powerful search engine, you first need structured access to:

  • Product titles, descriptions, tags

  • Inventory and availability

  • Pricing and discount information

  • Categories and filters

  • Content pages (optional: FAQs, guides, blogs)

Clerk.io syncs this data automatically from your ecommerce platform via plug-ins or APIs.

Step 2: Add the search engine to your website

Once Clerk.io has your product feed:

  1. Insert the Clerk.js script into your site

  2. Place the search bar widget in your header

  3. Customize the instant search dropdown and full search results page

Everything is styled to match your brand and optimized for speed. Results load instantly, even with large catalogs.

Step 3: Enable instant search and filtering

Clerk.io’s Instant Search shows predictive results as the user types—products, categories, and even content pages.

On the results page, enable:

  • Dynamic filters: by brand, color, price, availability

  • Sorting: by relevance, popularity, or price

  • Pagination or infinite scroll

It’s all part of building the best search engine for your website.

Step 4: Personalize the results with AI

Your search engine shouldn’t show the same results to everyone. Clerk.io automatically personalizes search results using:

  • Click and purchase history

  • Inventory priorities

  • Real-time behavior

  • Semantic relevance (e.g., “jacket” ≠ “sweater”)

This means customers see what they actually want—faster.

Step 5: Analyze and optimize search performance

Clerk.io includes a Search Insights Dashboard where you can track:

  • Most searched terms

  • “No results” queries

  • Product performance in search

  • Conversion from search vs. navigation

Use these insights to add synonyms, boost underperforming products, and tweak page layouts.

Step 6: Boost products and control merchandising

Want to push new arrivals or high-margin items in search? Use Clerk.io’s built-in Merchandising Hub to:

  • Boost specific products or categories

  • Demote low-priority SKUs

  • Pin results for branded terms

  • Create search rules for campaigns (e.g. show sale items for "summer")

All of this is automated, yet easily managed from the dashboard.

Built-in privacy and cookieless personalization

Clerk.io is fully cookieless. Unlike legacy tools, it personalizes without storing or sharing user data. You get:

  • GDPR/CCPA compliance

  • No consent banners for tracking

  • AI based purely on behavior and sales history

This makes it a future-proof choice for building a smart search engine on your website.