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Documentation Index

Fetch the complete documentation index at: https://supertab-feature-merchant-auth-change-again.mintlify.app/llms.txt

Use this file to discover all available pages before exploring further.

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Prerequisites

You’ll need your Website’s clientId to initialize Supertab.js. If you haven’t created a Website yet, follow the guide Create Websites first. To find your Website’s clientId, log in to the Business Portal, navigate to Organization / Websites, then click the ”…” button next to your Website.

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Quick Start

Choose an installation method based on your setup:

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From npm

Install Supertab.js from npm for use with bundlers like Webpack, Vite, or Rollup: 
npm install @getsupertab/supertab-js
Import, load and initialize the client in your application: 
import { loadSupertab } from "@getsupertab/supertab-js";

(async () => {
    const { Supertab } = await loadSupertab();
    const supertabClient = new Supertab({ clientId: "test_client.X" });
})();
loadSupertab() loads the latest compatible Supertab.js version from our CDN. It must be called in a browser environment—it won’t work server-side.

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Directly from CDN

Load Supertab.js directly from our CDN without a build step. Two options:

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With an ES Module import

Use this method for modern browsers that support ES modules: 
<script type="module">
    import { Supertab } from "https://js.supertab.co/v3/supertab.js";

    const supertabClient = new Supertab({ clientId: "test_client.X" });
</script>

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With the global loader

Use this method for environments without ES module support. The script supertab.global.js exposes the global function window.loadSupertab(): 
<script src="https://js.supertab.co/v3/supertab.global.js"></script>
<script>
    (async () => {
        const { Supertab } = await window.loadSupertab();
        const supertabClient = new Supertab({ clientId: "test_client.X" });
    })();
</script>

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Versioning

CDN URLs are versioned. Using v3 automatically loads the latest 3.x.x version (patch and minor releases). Breaking changes are released as new major versions.

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Next Steps

Once installed, you can launch experiences or build custom purchase flows: