WooCommerce Checkout Block vs. Classic Shortcode
The Real Difference in WooCommerce Checkout
The classic checkout renders via a PHP shortcode with a fixed template structure that themes and plugins customize primarily through PHP hooks and template overrides. The block-based checkout renders through the block editor, giving site owners direct visual control over field layout and content without needing a developer for many common adjustments, and it's built on WooCommerce's newer Store API rather than the older AJAX-based approach.
What to Check Before Switching
- Custom checkout field plugins or code built specifically for the classic checkout's hooks may not automatically work with the block checkout, which uses a different extension mechanism — this needs checking before switching a store with heavy checkout customization.
- Payment gateway plugin compatibility with the block checkout should be confirmed, since older or less actively maintained gateway plugins occasionally lag behind on block support.
- Theme-level checkout page styling built for the classic shortcode's markup will likely need adjustment for the block checkout's different HTML structure.
- A store not using any heavy checkout customization can generally switch with minimal friction, gaining the ongoing improvements WooCommerce continues to ship for the block checkout specifically.
How to Decide and Migrate
- Inventory any custom checkout fields, plugins, or theme customizations currently in place, checking each for block checkout compatibility.
- Test the block checkout on a staging copy with the full plugin stack active, rather than assuming compatibility.
- Migrate customizations that need it to the block checkout's extension approach before switching the live site.
- If a critical customization genuinely can't move yet, staying on classic checkout temporarily is a reasonable, supported choice while a proper migration is planned.
Need help migrating a customized checkout to blocks? See custom WooCommerce development.