# 2. Activating your License Key

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**Heads up!** Before activating your license key, make sure you installed Smart Image Resize PRO.
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1\. In your WordPress admin, go to the *WooCommerce menu → Smart Image Resize → Manage License*.

![](https://1613911975-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-M6IZsaWWLIsYTZFLvfP%2Fuploads%2FCfnlXE4DdWTb4My2f1K0%2FScreen%20Recording%202021-12-08%20at%206.24.54%20PM.gif?alt=media\&token=74af7be7-3f2f-4acf-9c73-01107e540f02)

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If you're not using WooCommerce, you can activate your license key under *the Settings menu → Smart Image Resize → Manage License.* 
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2\. Copy and paste the license key you received in your purchase confirmation email, and click the **"Activate license"** button to activate your license key.

![](https://1613911975-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-M6IZsaWWLIsYTZFLvfP%2Fuploads%2FIzbShCvalnERjI1ZGweP%2Fi00010.jpg?alt=media\&token=01697f63-d794-40d6-9c1c-9d3089f00635)

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Didn't receive your purchase confirmation email? [Log in to your account](https://sirplugin.com/myaccount) to access your license key and download link.
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#### Can I change the license key to another domain after I activate it?

Yes, but before you activate your license key on the new domain, make sure you unlink it from the old domain. Here's how:

1. Go to *WooCommerce menu →  Smart Image Resize  →* *Manage License*
2. Click the button "**Deactivate license"** to remove the license key from the old domain
3. Now, you can activate it on the new domain

{% hint style="info" %}
Having trouble activating/deactivating your license key? [Log in to your account](https://sirplugin.com/myaccount) to manage your site activations or email <support@sirplugin.com> for support.
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