Create From Image - Node.js

Create an editable scene from an image file using CE.SDK in headless Node.js environments for server-side image processing workflows.

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Starting from an existing image allows you to process and transform images on the server. The engine.scene.createFromImage() method fetches the image, creates a scene with matching dimensions, and sets up pixel-based design units. This is useful for batch processing, automated image transformations, and server-side rendering pipelines.

import CreativeEngine from '@cesdk/node';
import { config } from 'dotenv';
import { mkdirSync, writeFileSync } from 'fs';

// Load environment variables
config();

/**
 * CE.SDK Server Guide: Create From Image
 *
 * Demonstrates how to create an editable scene from an image file
 * in headless Node.js environments.
 */

// Initialize CE.SDK engine in headless mode
const engine = await CreativeEngine.init({
  // license: process.env.CESDK_LICENSE, // Optional (trial mode available)
});

try {
  mkdirSync('output', { recursive: true });

  // ========================================
  // Create Scene from Remote Image URL
  // ========================================
  // The most common approach: load an image directly from a URL
  const imageUrl = 'https://img.ly/static/ubq_samples/sample_4.jpg';

  // Create a scene sized to match the image dimensions
  await engine.scene.createFromImage(imageUrl);

  // The scene is now ready for editing with the image as content

  console.log('✓ Created scene from image URL');

  // ========================================
  // Working with the Created Scene
  // ========================================
  // After creating the scene, access the page for modifications
  const pages = engine.block.findByType('page');
  const page = pages[0];

  if (page) {
    // Get the page dimensions (set from the image)
    const width = engine.block.getWidth(page);
    const height = engine.block.getHeight(page);
    console.log(`Scene dimensions: ${width}x${height}`);
  }

  // ========================================
  // Export the Result
  // ========================================
  // Export the scene to an image file
  if (page) {
    const exportBlob = await engine.block.export(page, {
      mimeType: 'image/png'
    });
    const buffer = Buffer.from(await exportBlob.arrayBuffer());
    writeFileSync('output/from-image-result.png', buffer);
    console.log('📄 Exported to: output/from-image-result.png');
  }

  console.log('\n✓ Create From Image guide completed successfully!');
} finally {
  // Always dispose the engine when done
  engine.dispose();
  console.log('\n🧹 Engine disposed successfully');
}

Initialize the Engine#

Start by initializing the CE.SDK engine in headless mode. The Node.js package (@cesdk/node) provides the same API as the browser version but runs without a visual interface.

// Initialize CE.SDK engine in headless mode
const engine = await CreativeEngine.init({
  // license: process.env.CESDK_LICENSE, // Optional (trial mode available)
});

Create Scene from Remote URL#

The most common approach is loading an image directly from a URL. Pass the URL to createFromImage() to fetch the image and create a scene sized to match its dimensions.

// The most common approach: load an image directly from a URL
const imageUrl = 'https://img.ly/static/ubq_samples/sample_4.jpg';

// Create a scene sized to match the image dimensions
await engine.scene.createFromImage(imageUrl);

// The scene is now ready for editing with the image as content

The method returns a promise that resolves once the image is loaded and the scene is ready for processing. The scene’s page dimensions automatically match the image.

Configure Scene Parameters#

The createFromImage() method accepts optional parameters for DPI, pixel scale factor, and scene layout.

const scene = await engine.scene.createFromImage(
  imageUrl,
  300, // dpi - defaults to 300
  1, // pixelScaleFactor - defaults to 1
  'Free', // sceneLayout - defaults to 'Free'
);

DPI: Affects the relationship between pixel and physical dimensions (defaults to 300)
Pixel Scale Factor: Accounts for high-DPI displays (defaults to 1)
Scene Layout: Controls page arrangement - ‘Free’, ‘HorizontalStack’, ‘VerticalStack’, or ‘DepthStack’ (defaults to ‘Free’)

Create Scene from Blob (Server-side)#

In server environments, you can fetch an image and create a blob URL for processing.

const response = await fetch(imageUrl);
const blob = await response.blob();
const objectURL = URL.createObjectURL(blob);
const scene = await engine.scene.createFromImage(objectURL);

This pattern is useful when you need to process images fetched from external sources or read from the filesystem.

Working with the Created Scene#

After creating the scene, use engine.block.findByType('page') to access the page. The scene contains a single page with the image as its content.

// After creating the scene, access the page for modifications
const pages = engine.block.findByType('page');
const page = pages[0];

if (page) {
  // Get the page dimensions (set from the image)
  const width = engine.block.getWidth(page);
  const height = engine.block.getHeight(page);
  console.log(`Scene dimensions: ${width}x${height}`);
}

Export the Result#

After processing, export the scene to an image file using engine.block.export().

// Export the scene to an image file
if (page) {
  const exportBlob = await engine.block.export(page, {
    mimeType: 'image/png'
  });
  const buffer = Buffer.from(await exportBlob.arrayBuffer());
  writeFileSync('output/from-image-result.png', buffer);
  console.log('📄 Exported to: output/from-image-result.png');
}

Clean Up Resources#

Always dispose of the engine when done to free system resources.

// Always dispose the engine when done
engine.dispose();

Troubleshooting#

Image fails to load

Verify the image URL is accessible from your server
Check network connectivity and firewall rules
Ensure the image format is supported (JPG, PNG, WebP, GIF)

Memory issues with large images

Process images in batches to manage memory usage
Dispose of the engine between batch operations
Consider resizing images before processing if output doesn’t require full resolution

Export failures

Ensure the output directory exists before writing
Check filesystem permissions
Verify sufficient disk space for output files

API Reference#

Method	Description
`CreativeEngine.init`	Initialize engine instance
`engine.scene.createFromImage`	Create scene from image URL
`engine.block.findByType`	Find blocks by type in scene
`engine.block.getWidth`	Get block width
`engine.block.getHeight`	Get block height
`engine.block.export`	Export block to image
`engine.dispose`	Clean up engine resources