Your Magento installation can be deployed to run in either production or developer mode. Some tools and configuration settings are designed specifically for developers, and can be accessed only while the store is running in developer mode.
Most topics in this guide apply to a Magento installation that is running in production mode. However, the following configuration settings and topics can be used only when the installation is running in developer mode. In this guide, each is marked with the note, “Developer Mode Only.”
- Merging CSS Files
- Changing UI Text
- Using Static File Signatures
- Frontend Development Workflow
- Optimizing Resource Files
- Developer Client Restrictions
- Template Path Hint
The Magento mode can be changed only from the command line of the server by a user with appropriate permissions. To learn more, see: Set the Magento Mode.