How To Add Custom HTML Code In Shopify (2026) | Theme Editor

Published: 10 February 2026
on channel: ECOM KNTRL
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How to add custom HTML code in Shopify using the current Theme Editor and theme file settings. This tutorial shows the safest ways to add HTML without breaking your theme, including where to paste code, how to preview changes, and how to publish updates correctly. You’ll learn when to use a Custom Liquid block, when to edit theme files, and how to avoid common mistakes that cause layout issues. This is the updated method for 2026 and reflects the latest Shopify admin and Online Store theme workflow. Ideal if you need to embed a widget, add custom sections, or insert HTML on a page in Shopify.


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