function processImage(originalImg, targetWidth = 500, targetHeight = 0) {
let w = Number(targetWidth);
let h = Number(targetHeight);
// Default to the original image width if an invalid width is provided
if (isNaN(w) || w <= 0) {
w = originalImg.width;
}
// If height is 0 or invalid, maintain the original aspect ratio
if (isNaN(h) || h <= 0) {
h = Math.round(originalImg.height * (w / originalImg.width));
}
const canvas = document.createElement('canvas');
canvas.width = w;
canvas.height = h;
const ctx = canvas.getContext('2d');
// Smooth image scaling
ctx.imageSmoothingEnabled = true;
ctx.imageSmoothingQuality = 'high';
ctx.drawImage(originalImg, 0, 0, w, h);
return canvas;
}The Image Size Resizer Tool allows users to adjust the dimensions of an image by specifying a target width and height. The tool includes an aspect ratio preservation feature, which automatically calculates the appropriate height when only a width is provided, ensuring the image does not appear stretched or distorted. This tool is useful for optimizing images for web use, social media uploads, or fitting specific layout requirements in digital documents.