Image upscaler

Enlarge images with high-quality browser resampling up to four times.

Choose an imagePNG, JPEG, WebP, AVIF, HEIC, or HEIF. Images stay on your device.

About Image upscaler

Image Upscaler enlarges a picture 2x, 3x, or 4x with high-quality browser resampling and exports a PNG. It scales the image up rather than inventing detail that was never captured.

Runs entirely in your browser. Your files never leave your device.

How to use it

1.Pick the original and look at its dimensions, its compression, and where it is going to end up.
2.Choose a scale that stays inside the browser's canvas limits and does not blow up memory.
3.Make the PNG, check the edges and fine detail, and keep the original next to it for comparison.

Options

Scale factors are 2×, 3×, and 4×.
High-quality smoothing is used while resampling, which keeps the enlargement clean rather than blocky.

Limitations

Resampling cannot invent texture, focus, or detail the camera never captured.
A large source times a large factor will exceed the browser's memory limits, and has to be done at a smaller scale.

Common questions

Does 4× add real detail?

No. It interpolates more pixels. The result is easier to place at size, but blur and compression damage come along with it.

Why was my upscale refused?

The canvas it needs is bigger than the browser safely allows. Use a smaller source, a lower factor, or resize first.

Next stepCrop imageFrame the enlarged image for its destination size.