Why Your Shopify Checkout Extension Suddenly Won’t Deploy
Why Shopify can block an app deployment because another checkout UI extension is still on an old API version, and how to upgrade safely.
Troubleshooting
Production bugs, broken storefront behavior, configuration traps, and the checks that separate Shopify settings from theme code.
Why Shopify can block an app deployment because another checkout UI extension is still on an old API version, and how to upgrade safely.
Apps Checkout Checkout UI ExtensionsA practical method for migrating Shopify theme features by mapping dependencies and preserving the target theme instead of copying the old theme wholesale.
Complete Guide Migration OptimizeHow to keep one-time Shopify sale pricing from also discounting Recharge subscription lines by separating merchandise eligibility from purchase type.
Apps Checkout DiscountsShopify cart notes can disappear when the note field sits outside the cart form, custom Ajax code never updates the cart, or stale checkout state restores an older note value.
AJAX Cart Cart Attributes Cart NotesA Shopify redirect loop is usually a domain-routing problem involving incorrect DNS, competing proxies, duplicate records, or external redirects—not a theme redirect.
DNS Domains OptimizeShopify discounts only stack when both discounts allow the relevant combination and their discount classes, products, sales channel, and eligibility rules support it.
Automatic Discounts Checkout Discount CombinationsShopify file-reference metafields can expose a GenericFile object rather than a ready-to-use string URL. Resolve the metafield value, then use the file object’s URL property.
File Reference Liquid MetafieldsA Shopify draft-order invoice can be translated correctly while its checkout opens in the store’s default language. Verify the market and use a localized checkout link when needed.
Checkout Draft Orders LanguagesShopify variant images can stop switching because the variant-media association is stale or theme variant-change JavaScript is broken. Re-save the image assignment before rewriting code.
Dawn Optimize Product ImagesA troubleshooting guide for leftover Shopify app scripts after uninstalling apps, including App Embeds, theme.liquid, Network tab checks, and duplicate script tags.
Apps JavaScript OptimizeA practical troubleshooting guide for Shopify shipping rates that do not appear at checkout, covering profiles, zones, product assignment, markets, weights, locations, and carrier app failures.
Checkout Optimize ShippingA Shopify metafield troubleshooting guide for cases where data exists in admin but does not render on the storefront, dynamic source, Liquid, or Storefront API.
Metafields Optimize Product Data