Optimize for non-Webflow sites

API: Trigger snippet activation in SPAs

Updated

Use the activate() API to ensure variation delivery on single-page apps.

Important

All JavaScript APIs in Optimize must be wrapped in a .ready() callback to run properly.

If your site uses single-page app (SPA) routing, the Optimize snippet won’t automatically re-trigger when the URL or state changes. The activate() API lets you manually activate the snippet so visitors see the correct variation after navigation.

activate()

intellimize.activate();

SPA-only API

This API is only intended for single-page apps (SPAs). If your site loads new pages through traditional full-page refreshes, you don’t need to use this — the Optimize snippet activates automatically. Using this API on non-SPA sites can cause issues like duplicate activations or unexpected behavior.

Use the activate() API only when:

  • Your site is a single-page app (SPA)
  • The URL or state changes without a full page reload

Ideal sequence to avoid flicker

  1. Change the URL
  2. Call activate()
  3. Mutate the DOM

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