A development site is a free Wix site you create specifically for testing your Wix app as you build it, before your changes reach real users. It lets you install your app, exercise its extensions, and see how it behaves on an actual Wix site.
A development site is a real Wix site, and can be built in any of the site editors. Anything you already know about working with a Wix site applies. For example, you install business solutions the same way, and you publish the same way. Two things set it apart for app development:
For the steps to create and remove development sites, install your app on them, and switch between them, see Work with Development Sites.
Wix apps aren't standalone web apps. They run only when they're installed on a Wix site. Like any site, a development site uses the version of your app that's installed on it, which is what you see when you open the site normally, such as from your sites list. As on any site, if no version is installed, your app doesn't appear at all. Even the Wix CLI's live preview needs your app installed on the site first.
A development site can have several apps installed on it for testing, and your app can be installed on several development sites at once. That lets you compare setups, for example a different editor or template on each.
In-progress changes, the ones that aren't in any release yet, can reach a development site too. How that works depends on your development framework:
wix dev prints load your local project instead of the installed version, with hot reloading, and only while the session is running. Once the session stops, those links can no longer load your app's extensions. A project uses one development site at a time, so you switch sites rather than previewing on several at once.Every development site is built in one site editor. A development site is additionally based on a template, which either pre-installs business solutions or is blank, with nothing special pre-installed.
Both affect what you can test:
For the available combinations and what each one pre-installs, see Available editors and templates.
A development site created in the app dashboard has one site editor and one template, both chosen when you create the site.
Note: Wix Stores has two catalog versions. Catalog V3 is current and Catalog V1 is legacy. A site uses one version or the other, so your app may meet either. The Catalog V1 template isn't available on Wix Harmony.
The following table lists the available combinations, and what each one pre-installs.
Note: The Wix CLI doesn't offer these templates. Its Harmony option creates a site from the same Blank Wix Harmony template as the app dashboard. Its standard option creates an empty Wix Editor site.
Last updated: 15 September 2026