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How to Fix: Next.js Image Optimization Error

The Next.js Image component throws errors about unconfigured hostnames or missing dimensions.

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Symptoms

'hostname not configured' error

Invalid src prop error

Images not optimizing correctly

Common Causes

01

External image host not in next.config.js

02

Missing width/height for external images

03

Invalid image format or URL

04

Image optimization service unavailable

The DevConsole Solution

DevConsole shows all images on the page with their optimization status and any errors.

Step-by-Step Fix

1

Check Image Console

DevConsole lists all images and their load status.

2

Configure Domains

Add external domains to images.remotePatterns in next.config.js

3

Verify Dimensions

Ensure width and height are provided for external images.

Frequently Asked Questions

Do I need width/height for local images?

No, Next.js auto-detects dimensions for local images.

Can I disable image optimization?

Yes, use unoptimized prop, but you lose performance benefits.

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