Supported internet browsers for Klaviyo

Estimated 2 minute read

|

Updated Oct 22, 2026, 12:00 AM EST

Table of contents

You will learn

Learn which internet browsers and versions are supported when accessing Klaviyo.

If you have trouble accessing Klaviyo, check that you’re using an up-to-date supported browser and that JavaScript is enabled.

Browser support policy

Klaviyo supports versions of the following internet browsers from the past 2 years:

  • Chrome
  • Edge
  • Firefox
  • Opera
  • Safari

Most operating systems include compatible browsers (e.g., Windows 10 has Edge).

You may be unable to use Klaviyo if you:

  • Are on an older version of the above browsers
  • Use a browser not listed
  • Use extensions that change how your browser displays content or identifies itself to websites (its user agent)
  • Have disabled JavaScript in your browser

Keep your browser up to date to get the latest browser features and security updates.

How to check which version of a browser you have

Use the instructions below to check which browser version you have:

If your browser version is 2 years or older, update your browser, then reopen Klaviyo.

If you still see “Your browser is not supported” in an up-to-date supported browser, check that JavaScript is enabled, then open Klaviyo again.

Connection security

Klaviyo requires that browsers support a security standard called transport layer security (TLS), specifically TLS 1.2. This ensures that a browser uses reasonable security when connecting to the Klaviyo app, hosted pages, or any other content hosted and managed by Klaviyo.

Up-to-date versions of Google Chrome, Mozilla Firefox, Apple Safari, Opera, and Microsoft Edge will support this without any extra steps.

Additional resources

Start in Composer for Klaviyo support. Use klaviyo.com/support as a backup or to submit an email support ticket if your account is eligible. - Klaviyo Community

Was this article helpful?

YesNo

Use this form only for article feedback. Learn how to contact support.

Explore more from Klaviyo

Community

Connect with peers, partners, and Klaviyo experts to find inspiration, share insights, and get answers to all of your questions.

Visit Community

Partners

Hire a Klaviyo-certified expert to help you with a specific task, or for ongoing marketing management.

Hire a partner

Support

Access support through your account.

Email support (free trial and paid accounts) Available 24/7

Chat/virtual assistance Availability varies by location and plan type

Log in