Bolt ui

Next.js Image Component Optimization Error

Using next/image causes errors. Image won't load or throws configuration error. Image optimization fails.

Error about missing width/height, or optimization service unavailable.

Error Messages You Might See

Error: Image with src should have width and height Error: Image Optimization API error Image domain not configured Unoptimized image with static size
Error: Image with src should have width and heightError: Image Optimization API errorImage domain not configuredUnoptimized image with static size

Common Causes

  1. Width/height not provided on Image component (required for static imports)
  2. External image domain not whitelisted in next.config.js
  3. Image format not supported by Next.js optimization
  4. Invalid src prop (relative path instead of absolute)
  5. Image optimization disabled but image props incorrect

How to Fix It

Always provide width and height: ...

For external images, add to next.config.js: { images: { remotePatterns: [{ hostname: 'example.com' }] } }

Use static import when possible: import img from '@/public/img.jpg'; ...

Ensure image file exists and is valid format (jpg, png, webp, gif)

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Frequently Asked Questions

When can I skip width/height?

Only with layout=fill (position: absolute parent) or static import with Babel plugin

How do I whitelist external image domains?

In next.config.js: images: { remotePatterns: [{ hostname: 'cdn.example.com', protocol: 'https' }] }

Is Image component always better than img tag?

Yes for web. Image automatically optimizes, lazy loads, handles responsive sizes. Always use next/image

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