A Shopify Product Label App helps you display labels like:

• “SALE”
• “NEW”
• “20% OFF”

If you’re working with Shopify stores, you’ve probably seen these types of labels. These small badges can make a big difference in how products perform.

In this guide, I’ll show you how to build a Shopify Product Label App using React Router (Remix-based setup), along with real code snippets and a working approach.

Why Product Labels Matter in Shopify Stores

Before jumping into code, let’s understand the business value.

Benefits for Store Owners

• Increase product visibility
• Improve conversion rates
• Highlight offers instantly
• Create urgency (SALE, LIMITED, etc.)

Benefits for Developers

• Reusable app idea
• High demand feature
• Easy to extend (dynamic labels, automation)

Tech Stack Used

To build this app, we use:

• Shopify Custom App
• React Router (Remix architecture)
• Node.js
• Prisma ORM
• PostgreSQL

Step 1: Shopify OAuth & Store Data Handling

When a merchant installs your app, you must store their shop and access token.

// app/routes/auth.callback.jsx

import prisma from "../db.server";

export async function loader({ request }) {
  const { session } = await authenticate.admin(request);

  await prisma.shop.upsert({
    where: { shop: session.shop },
    update: {
      accessToken: session.accessToken,
      installedAt: new Date(),
    },
    create: {
      shop: session.shop,
      accessToken: session.accessToken,
      installedAt: new Date(),
    },
  });

  return redirect("/");
}

This is essential for:

• multi-store apps
• API authentication
• data separation

Step 2: Create Product Labels (Backend Logic)

Now let’s store label data.

await prisma.label.create({
  data: {
    shop: session.shop,
    labelType: "text",
    labelContent: "SALE",
    position: "TOP_LEFT",
    isActive: true,
  },
});

Always attach shopto every record.

Step 3: Fetch Labels (Multi-store Safe)

const labels = await prisma.label.findMany({
  where: {
    shop: session.shop,
    isActive: true,
  },
});

This ensures:

• each store sees only its data
• no data leakage

Step 4: Label Customization (UI + Logic)

Your app allows:

• Position selection (top-left, top-right, etc.)
• Page visibility (product, collection, home)
• Hover effects

await prisma.label.update({
  where: { id: labelId },
  data: {
    position: "TOP_RIGHT",
    showOnProductPages: true,
    hoverEffect: true,
  },
});

Step 5: Display Labels on Storefront

To show labels on the frontend:

// Example logic

const labels = await fetch(`/api/labels?shop=${shop}`);

labels.forEach(label => {
  // attach badge to product UI
});

You can use:

• App Embed
• ScriptTag API

Step 6: Handle App Uninstall (Webhook)

await prisma.shop.update({
  where: { shop },
  data: {
    uninstalledAt: new Date(),
    accessToken: null,
  },
});

Prevents:

• unused data
• invalid API calls

Common Challenges in Shopify App Development

While building this, you may face:

• OAuth complexity
• Multi-store data handling
• Theme integration
• Performance issues

But once solved, you can reuse this architecture for many apps.

SEO Tips for Shopify App Developers

If you’re building apps like this:

• Focus on real store problems
• Keep UI simple
• Add onboarding steps
• Optimize database queries
• Build reusable features

Conclusion

Building a Shopify app is not just about writing code. It’s about solving real problems for merchants.

A simple feature like product labels can:

• improve UX
• increase sales
• make your app valuable

We hope this blog may be understandable and useful to you. You can email us at mage2developer@gmail.com if we missed anything or if you want to add any suggestions. We will respond to you as soon as possible. Happy to help