How to Use Rewrite Rules in Next.js for Image Optimization

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Understanding the Problem

This exposes your internal server address, which is not ideal for security. The goal is to prevent this info from being visible to the client while still serving images efficiently.

The Solution: Setting Up Rewrite Rules

Step-by-Step Guide to Create Rewrite Rules

Remove the Server IP from the Image Source:

Begin by updating the image source to a relative path. This way, we remove the server address altogether from the client side.

Create a Rewrite Rule in Middleware:

[[See Video to Reveal this Text or Code Snippet]]

In this implementation:

The code checks if the request URL corresponds to the image optimization route.

It identifies the index of the backend image path in the request URL.

The newUrl variable is constructed to include the backend IP only when processing the image request.

Example in Action

For instance, when a client requests an image:

[[See Video to Reveal this Text or Code Snippet]]

The server will rewrite this request to:

[[See Video to Reveal this Text or Code Snippet]]

Conclusion