The HubSpot Developer Mode Toggle is a free Chrome extension aimed at simplifying the workflow for developers working on HubSpot CMS. This lightweight tool enables users to quickly activate developer mode on HubSpot editor pages by appending ?developerMode=true to the URL with just a single click. This functionality allows access to advanced developer tools on both the design manager and content editor, enhancing the overall development experience.

One of the standout features of this extension is the ability to toggle developer mode on and off seamlessly. It also updates the tab icon based on the current page state, ensuring users are aware of their mode. Designed specifically for HubSpot CMS editor pages, it avoids interference with other sites, making it a reliable choice for HubSpot theme developers, CMS Hub power users, and agencies managing multiple HubSpot portals.