image-utility-library/src/format.js

A Node.js library for compressing, resizing, cropping, and applying effects to images.

import sharp from 'sharp';

/**
 * Convert an image buffer to a different format.
 * @param {Buffer} imageBuffer - The input image buffer.
 * @param {String} format - Desired format (jpeg, png, webp).
 * @returns {Promise<Buffer>} - Image buffer in the new format.
 */
const formatImage = async (imageBuffer, format) => {
  if (!['jpeg', 'png', 'webp'].includes(format)) {
    throw new Error('Unsupported format provided.');
  }

  return await sharp(imageBuffer)
    .toFormat(format)
    .toBuffer();
};

export default formatImage;