# Technical requirements to use Contrast

Contrast runs on most devices, operating systems and browsers

Written by Luuk de Jonge  
February 26, 2026

## Technical requirements for speakers and webinar hosts

For the best experience on Contrast, we recommend you to use Google Chrome. Or a browser that runs on Chromium.

Make sure that your browser is up to date for the best experience.

If you're experiencing problems with Contrast or the webinar studio, please [check out our help desk](https://help.getcontrast.io/en/collections/8273927-troubleshooting).

Don't have Google Chrome? [Install it here](https://www.google.com/chrome/).

Contrast for speakers and webinar hosts is currently only available on desktop computer and laptop.

## Technical requirements for attendees

Attendees can join and watch your webinar from the following operating systems

- Microsoft Windows
- Apple MacOS
- Apple iOS
- Apple iPadOS
- Android

As a general rule, we recommend using a recent operating system. Operating systems older than 7 years might experience issues.

If your attendees can not join or watch your webinar, please make sure they have updated their browser before contacting us.

It may happen that a firewall or anti-virus software is blocking them from accessing Contrast.

Contrast for attendees is available on desktop, tablet and mobile device.