The Squarespace Developer Platform is an advanced customization tool for version 7.0 sites that lets developers modify their sites beyond standard customization options.

The platform is specifically designed for experienced developers with knowledge of HTML, LESS CSS, JSON-T, and Github. Most users can achieve their customization needs using Squarespace's built-in custom code options.

With the Developer Platform, you can:

• Create custom 7.0 site templates from scratch
• Modify existing 7.0 templates
• Access template markup, style sheets, scripts, and design assets

Key limitations:

• Can't create or modify 7.1 sites
• No access to CMS content
• No server-side custom code
• Can't modify default scripts/styles
• Can't customize blocks or cover pages

Important considerations when using developer mode:

• Demo content will disappear upon activation
• Template switching becomes unavailable
• No template updates from Squarespace (platform updates continue)
• Requires Business plan or higher to maintain full access

When disabling developer mode:

• All Developer Platform customizations disappear
• Site reverts to default Squarespace settings
• Custom layouts and integrations stop working
• Navigation menus reset
• Custom blog post types revert to defaults
• Sidebar, header, and footer content vanishes

Trial period specifics:

• Full access during trial period
• Trial sites with developer mode don't expire
• Must upgrade to Business plan or higher to continue using

If using two-factor authentication or social login, you'll need to create an app password to access the platform.

Support limitations:

• Basic setup assistance available
• No custom code troubleshooting
• Access community support through Squarespace Forum
• Refer to developer documentation for technical guidance

For full documentation, visit developers.squarespace.com.

Related Articles

Previous Articles