Supported browsers

  • Updated
  • Optimizely Web Experimentation
  • Optimizely Performance Edge
  • Optimizely Personalization

Requirements for building campaigns and experiments

Only the current version of the Desktop Chrome browser is supported for building experiments and campaigns within the Optimizely application itself. Chrome's developer tools are user-friendly and work smoothly with Optimizely.

If you run into unexpected behavior when using Optimizely in a different browser, try Chrome.

Supported browsers

Site visitors see your campaigns and experiments if they are using any of these widely used browsers:

Desktop and mobile

  • Chrome 59 or later
  • Safari 16 or later
  • Edge 135 or later
  • Firefox 112 or later
  • Opera 82 or later

In-app browsers (Facebook, Instagram, and similar)

  • Android 5 or later
  • iOS 10 or later
Microsoft ended support for Internet Explorer (IE) 11 on June 15, 2022. As a result, Optimizely Experimentation ended support for IE 11 starting April 15, 2023.

For Optimizely Performance Edge

If a visitor visits a page from a browser that is not listed above, Optimizely Performance Edge may choose to not run experiments. In that event, both the Edge Decider and microsnippet will detect that the visitor’s browser is unsupported and abort before doing any significant work. This ensures that Optimizely Performance Edge has a negligible performance impact for such visitors.