Upscale an image 2× or 4×

How to upscale an image

Pick 2× or 4×, choose whether to sharpen edges, then drop a PNG, JPG or WebP image above. The image is enlarged in several half steps with the browser's high-quality resampling, which interpolates more smoothly than one big jump. A sharpening convolution then brings back crisp edges. Preview the result and download it as a PNG named with -2x or -4x.

Not AI super-resolution

This is not a neural super-resolution model, so it doesn't invent new detail. That keeps it fast and free of strange artifacts such as made-up textures or warped text, and there is no large model to download. It is honest resampling: smoother and sharper than a plain stretch, but limited to the detail already in the image.

When to use it

Use it to make small logos, icons, thumbnails and web graphics bigger. It avoids the blocky, jagged look of a plain stretch. It smooths and sharpens what is already there.

What to expect

Upscaling can't add detail the original never had. A tiny, blurry photo won't become sharp. It will look smoother and cleaner than a basic resize, and it is made entirely on your device.

Before you start

Input: PNG, JPG, JPEG, and WEBP. Output: PNG. The settings appear before anything runs, so you can check them first. Your original file is never changed.

Local AI tools may download a model before the first run and can use a lot of memory. The output can contain mistakes or gaps, so review it before you rely on it.

Keep the original until you have opened and checked the result. The work happens in this browser tab, so the size you can handle depends on your device's memory, your browser and the file itself.

How to upscale an image 2× or 4×

1. Pick 2× or 4× and turn edge sharpening on or off.
2. Drop an image into the box above.
3. Wait a moment while it is resized and sharpened on your device.
4. Preview the result and download the larger PNG.