Resize image

Enlarging cannot add detail that was never captured, so very large upscales look soft. Moderate enlargement up to about 150 percent looks fine thanks to the high-quality Lanczos resampling used here.

Fit scales the image to sit inside the dimensions you give while keeping its proportions. Exact stretches to the precise width and height, which can distort. Cover fills the exact size and trims the overflow from the edges, which is what you want for thumbnails and social media sizes.

Yes. Add all of them, enter just the width with the aspect ratio locked, and every image is scaled to that width with its own proportional height.

Keep the original format unless you have a reason to change it. JPG for photos, PNG for graphics with sharp edges or transparency, WebP for the smallest files on the web.

No. This tool runs entirely inside your browser using JavaScript. Your files are read from your device, processed in memory, and the result is handed straight back to you as a download. Nothing is transmitted, stored or logged, and the page keeps working if you go offline after it has loaded.