Resize Image

JS

const fetch = require('node-fetch'); // node-fetch must be installed if you're using Node.js versions before 18.x

const resizeImage = (cid, height, width, path) => {
  const url = `https://gateway.lighthouse.storage/ipfs/${cid}?h=${height}&w=${width}`;

  fetch(url)
    .then(response => {
      if (response.ok) return response.buffer();
      throw new Error('Network response was not ok.');
    })
    .then(buffer => {
      const fs = require('fs');
      fs.writeFile(path, buffer, () => {
        console.log(`Resized image saved to ${path}`);
      });
    })
    .catch(error => {
      console.error('Failed to save the resized image:', error);
    });
};

// Replace 'CID' with the actual Content Identifier of your image, and 'path' with your desired file path.
resizeImage('CID', 200, 800, 'path/to/your/directory/filename.ext');

CLI

curl "https://gateway.lighthouse.storage/ipfs/CID?h=200&w=800" --output path/to/your/directory/filename.ext

# Replace 'CID' with your file's Content Identifier and adjust the output path accordingly.

Web Browser

To resize an image using a web browser, navigate to the URL with the appropriate parameters. Replace CID with your file's Content Identifier:

https://gateway.lighthouse.storage/ipfs/CID?h=200&w=800

Adjust the height (h) and width (w) parameters as needed.

Python SDK

import requests

def resize_image(cid, height, width, path):
    """
    Resize an image stored on IPFS via Lighthouse gateway.
    
    :param cid: str, Content Identifier of the image
    :param height: int, Desired height in pixels
    :param width: int, Desired width in pixels
    :param path: str, Path where resized image will be saved
    """
    url = f"https://gateway.lighthouse.storage/ipfs/{cid}?h={height}&w={width}"
    
    response = requests.get(url)
    response.raise_for_status()
    
    # Save the resized image
    with open(path, 'wb') as f:
        f.write(response.content)
    
    print(f"Resized image saved to {path}")

# Replace 'CID' with the actual Content Identifier of your image, and 'path' with your desired file path.
resize_image('CID', 200, 800, 'path/to/your/directory/filename.ext')