Image Optimization Configuration in Next.js 16

Breaking Changes

1. Removed Configuration Options

domains (removed)

• Replaced by remotePatterns
• More secure with pattern matching instead of wildcard domain access

loader (removed for 'default')

• Custom loaders must now be specified explicitly
• No implicit fallback to default loader behavior

formats array changes

• AVIF format now enabled by default
• Order affects format preference during negotiation

2. Changed Default Values