The Squarespace Developer Platform enables advanced developers to customize websites beyond standard customization options. Here's what you need to know.

Developer Platform Requirements:

• Advanced programming knowledge required (HTML, LESS CSS, JSON-T, Github)
• Business plan or higher subscription needed
• Not recommended for basic users who can use built-in customization tools

Key Capabilities:

• Create custom 7.0 website templates
• Edit existing 7.0 templates
• Access markup, stylesheets, scripts, and design assets
• Modify template layouts and features

Limitations:

• Cannot create/edit 7.1 websites
• No access to CMS content
• Cannot add server-side code
• Unable to modify standard scripts, styles, or editing tools
• No customization of blocks or cover pages

Important Considerations:

When Activating Developer Mode:

• Demo content will be removed
• Template switching becomes unavailable
• No template updates from Squarespace
• Platform-wide updates continue

When Deactivating Developer Mode:

• All custom code and styling disappears
• Website reverts to default settings
• Navigation menus reset
• Custom layouts and integrations stop working
• Content in sidebars, headers, and footers vanishes
• Custom blog post types revert to standard

Account Management:

• Trial periods provide full access
• Must maintain Business plan or higher for continued access
• Downgrading restricts further changes but maintains existing customizations
• Two-factor authentication requires app password
• Social media login not supported

Support Options:

• Basic platform assistance available
• No custom code troubleshooting
• Access to developer forum
• Comprehensive documentation provided

For detailed technical documentation, visit developers.squarespace.com.

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