Streamline Image Processing with Imaginary in DDEV Local Dev

Setting up a local development environment that mirrors production workflows can be tricky, especially when dealing with image processing. One common challenge is ensuring images are resized, cropped, or optimized consistently without relying on external services. Adding the Imaginary tool to your DDEV setup provides a lightweight, self-contained solution that handles these tasks locally.

Why Use Imaginary with DDEV?

Imaginary is an open-source, fast HTTP microservice for image processing. It supports operations like resizing, cropping, rotating, and converting images, all while maintaining high performance. When paired with DDEV—a popular local development environment for PHP projects—Imaginary eliminates the need for external image processing services during development.

Key advantages include:

• Reduced dependency on third-party APIs – Process images locally, avoiding network latency and API rate limits.
• Faster iteration cycles – No waiting for remote services to complete image tasks.
• Consistent behavior – Matches production image processing without environment discrepancies.

Step-by-Step Setup for Imaginary in DDEV

To integrate Imaginary into your DDEV project, follow these steps:

1. Create a custom Docker Compose file in your project’s .ddev directory named docker-compose.imaginary.yaml.

1. Add the Imaginary service configuration to this file. The snippet below defines the service, exposes the necessary ports, and sets up environment variables for seamless integration:

services:
  imaginary:
    image: h2non/imaginary:latest
    container_name: "ddev-${DDEV_PROJECT}-imaginary"
    labels:
      com.ddev.site-name: ${DDEV_SITENAME}
      com.ddev.approot: ${DDEV_APPROOT}
    expose:
      - "9000"
    command: ["-enable-url-source"]
    restart: "no"
    environment:
      - VIRTUAL_HOST=${DDEV_HOSTNAME}
      - HTTP_EXPOSE=7000:9000
      - HTTPS_EXPOSE=7001:9000

1. Start the Imaginary service by running:

ddev start

This command initializes the Imaginary container alongside your existing DDEV services.

Configuring Your Application to Use Imaginary

Once Imaginary is running, update your application to route image processing requests to the local service instead of external endpoints. For example, in a Drupal-based project, ensure your image URLs point to the Imaginary endpoint rather than a remote processor.

To verify the setup:

• Access the Imaginary service at ` (or the port specified in your configuration).
• Test image processing by appending query parameters to an image URL, such as ?width=300&height=200&fit=cover.

Troubleshooting Common Issues

If images fail to process or the service doesn’t start, check the following:

• Port conflicts – Ensure no other service is using ports 7000 or 9000. Adjust the HTTP_EXPOSE and HTTPS_EXPOSE values if necessary.
• Container logs – Run ddev logs -s imaginary to inspect errors or warnings.
• Environment variables – Confirm ${DDEV_HOSTNAME} and other variables are correctly set in your .ddev/config.yaml file.

Looking Ahead: Local Image Processing as Standard

Integrating Imaginary into your DDEV workflow transforms how you handle images during development. By processing assets locally, you reduce external dependencies, speed up testing, and ensure consistency with production. As local development environments evolve, tools like Imaginary will become standard for maintaining efficient, self-contained workflows.