async function processImage(originalImg) {
return new Promise((resolve, reject) => {
try {
const canvas = document.createElement('canvas');
const width = originalImg.naturalWidth || originalImg.width;
const height = originalImg.naturalHeight || originalImg.height;
canvas.width = width;
canvas.height = height;
const ctx = canvas.getContext('2d');
ctx.drawImage(originalImg, 0, 0, width, height);
// Convert to PNG format
const pngDataUrl = canvas.toDataURL('image/png');
const resultImg = new Image();
resultImg.onload = () => resolve(resultImg);
resultImg.onerror = () => reject(new Error("Failed to create PNG image"));
resultImg.src = pngDataUrl;
} catch (error) {
reject(error);
}
});
}This tool allows users to convert existing images into the PNG format. It is useful for changing file types to preserve image quality or to ensure compatibility with software and web platforms that require PNG files, such as when working with transparent backgrounds or high-quality graphics.