---
title: >-
  Online Store 2.0: Build and test themes with development themes - Shopify
  developer changelog
description: >-
  Shopify’s developer changelog documents all changes to Shopify’s platform.
  Find the latest news and learn about new platform opportunities.
source_url:
  html: >-
    https://shopify.dev/changelog/online-store-2-0-build-and-test-themes-with-development-themes
  md: >-
    https://shopify.dev/changelog/online-store-2-0-build-and-test-themes-with-development-themes.md
metadata:
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  affectedApi: []
  primaryTag:
    displayName: Tools
    handle: tools
  secondaryTag:
    displayName: New
    handle: new
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  createdAt: '2021-06-25T16:47:32-04:00'
  postedAt: '2021-06-29T00:00:00-04:00'
  updatedAt: '2024-02-02T10:05:01-05:00'
  effectiveAt: '2021-06-29T00:00:00-04:00'
---

June 29, 2021

Tags:

* Tools

# Online Store 2.0: Build and test themes with development themes

Development themes are temporary, hidden themes that are connected to the Shopify store you’re using for development. When you run `shopify theme serve`, Shopify CLI automatically creates a development theme inside the store you’re working on, and will reuse that theme each time `shopify theme serve` is subsequently run during the same session. You don’t need to worry about others viewing or making edits to it because development themes are not visible on the **Online store** > **Themes** page.

[Learn more about Development Themes](https://shopify.dev/themes/tools/cli#development-themes).