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docs PHP, CSS & JS

Installing Oxygen

Install Oxygen just like a normal WordPress plugin.

In your WordPress admin panel, go to Plugins -> Add New -> Upload, and upload the .zip file for Oxygen.

Then, activate the plugin just as you would activate any other WordPress plugin.

After activating Oxygen, choose Premade Website to load a premade website from the Design Library. Otherwise, choose Blank Installation.

Downloading Oxygen

After you have purchased Oxygen, you can login and download it from the customer portal.

Entering Your License Key

To get update notifications and download updates to Oxygen from your WordPress admin panel, enter your license key by going to the Oxygen -> Settings screen, then clicking the License tab. You can find your license key in the customer portal.

If you’ve purchased the Agency package, activating your license will also give you access to Oxygen’s Client Controls. Likewise, if you’ve purchased the Ultimate package, you should have access to Oxygen’s Client Controls as well as the Composite Elements library.


Fatal Error On Activation

Disable and delete all other versions of Oxygen that are active on your site. This can be done from Plugins page of your WordPress admin panel.

Make sure you are using PHP version 7x or PHP version 8x.


The uploaded file exceeds the upload_max_filesize directive in php.ini

Contact your web host and ask them to increase the upload_max_filesize setting for you.

Further Reading: Troubleshooting Guide

Last modified: September 13, 2022
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