The Squarespace Developer Platform is a premium feature that enables advanced customization beyond standard Site Styles. It's exclusively designed for experienced developers with knowledge of HTML, LESS CSS, JSON-T, and Github.

Key Features:

• Create custom 7.0 site templates
• Edit existing 7.0 templates
• Access template revisions, stylesheets, and scripts
• Customize design resources

Limitations:

• Cannot create or edit 7.1 sites
• No access to CMS content
• Cannot add server-side custom code
• Cannot modify default scripts/styles
• No block or cover page customization

Important Considerations:

When Enabling Developer Mode:

• Demo content will be removed
• Template changes become unavailable
• No template updates (platform updates continue)
• Live site remains unchanged until code updates

When Disabling Developer Mode:

• All custom code is removed
• Site reverts to default styles and settings
• Custom layouts and integrations stop working
• Navigation menus reset
• Custom blog post types revert to default
• Sidebars, headers, and footers lose custom content

Plan Requirements:

• Available on Business plans and higher
• Trial sites with Developer Mode don't expire
• Downgrading to Personal plan locks Developer Mode

Authentication:

• Requires app password if using two-factor authentication
• Social login users must create specific login credentials

Support:

• Basic platform assistance available
• No custom code troubleshooting
• Developers should be self-sufficient

Resources:

• Squarespace Forum for peer support
• Comprehensive developer documentation
• Visit developers.squarespace.com for technical details

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