Custom code can enhance your website's functionality and appearance when used properly. While Squarespace allows website creation without programming knowledge, adding custom code requires technical expertise.

Types of Custom Code Supported:

• HTML: Adds content structure to webpages
• JavaScript: Creates interactive elements like slideshows and lightboxes
• CSS: Controls website styling (limited to 128,000 characters)
• Markdown: Formats text content
• iFrames: Embeds external content

Important Considerations:

• Only add custom code if you have programming knowledge
• Custom code modifications aren't covered by Squarespace support
• Server-side code (PHP, Ruby, SQL) isn't supported
• Custom CSS should be used sparingly, mainly for:
  • Fonts
  • Colors
  • Backgrounds

Code Implementation Options:

1. Code Blocks

• Best for advanced, customizable code
• Supports HTML and Markdown
• Useful for embedding documents and custom features

2. Embed Blocks

• Ideal for basic third-party content
• Uses oEmbed standard
• Supports social media posts and videos

Troubleshooting Tips:

• Refresh browser if code doesn't display
• Test in incognito mode when logged out
• Check if code is properly placed outside index pages
• CORS requests are not supported

Recommended Learning Resources:

• W3Schools
• CodeCademy
• Mozilla Developer Network
• Stack Overflow
• Shay Howe
• SitePoint
• Treehouse

For professional assistance:

• Join Squarespace Forum for community support
• Consider Squarespace Circle membership
• Hire a Squarespace Expert for custom development

Remember: Custom code can impact your website's functionality, so implement changes carefully and maintain proper backups.

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