MutationObserver is a super handy tool in the front-ender’s toolbox – especially when it comes to Shopify themes. This is how I used it with the Streamline theme from Archetype – but it can certainly be applied to a bunch of other themes too.

Here’s how I created a countdown to free shipping using the Web API.

We see it all too often… a merchant decides to run their domain through an online page speed test and, shocked with the results, immediately assumes their entire business is burning to the ground.