Important Update: Snippets vs. Theme Extensions
Please read before proceeding:
Plug In SEO has been updated to use Theme Extensions (App Embeds). You do not need to follow the instructions in this article if:
You installed the app after December 11, 2025.
You installed the app before December 11, 2025 but have already migrated to the new Theme Extensions configuration. (You can check your migration status in your Plug in SEO)
This guide is intended only for users who have not updated to the new configuration and are still using the manual code snippets.
Locksmith is a Shopify app for locking things in your shop for groups of users. Locksmith by default locks up the meta description in theme.liquid.
Working with Isaac and Locksmith we can confirm that Plug in SEO is fully compatible.
The shops we've looked at don't need their meta descriptions to be locked. To release control of your meta description from Locksmith and give it to Plug in SEO, simply remove the meta description and its surrounding Locksmith markup.
Then, the standard {% include 'pluginseo' %} will be in control of your meta descriptions.
If this doesn't work for you, drop us a mail at [email protected] and we'll help you to find a solution.