Question 1

How does AI upscaling work here?

Accepted Answer

The image is uploaded and run through Real-ESRGAN. The model invents extra pixels. This is not our browser-only image path.

Question 2

What is the difference between 2x and 4x?

Accepted Answer

2x doubles each side. 4x quadruples them. 4x is larger and shows more generated texture.

Question 3

What formats can I upload?

Accepted Answer

Common stills such as JPG, PNG, WebP, GIF, and BMP. The result is a PNG.

Question 4

Is there a file size limit?

Accepted Answer

Stay under about 10MB. Very large files are slower and more likely to fail.

Question 5

Will this fix a blurry photo?

Accepted Answer

Slight softness can sharpen. A hard miss on focus will not become a real detail.

Question 6

Is the photo kept private?

Accepted Answer

It leaves the device for this request, then we discard it. If it must never upload, use the client-side image tools.

Question 7

Do you store my photo?

Accepted Answer

No. It is used for the request and discarded.

Question 8

Is this the same as Resize Image?

Accepted Answer

No. Resize stretches in the browser and does not invent detail. This page uses a server model.

Question 9

Can I upscale a PDF?

Accepted Answer

No. Export a page as an image first, or use PDF to Images.

Question 10

Why is the result a PNG?

Accepted Answer

So the new pixels are not immediately lossy-compressed. You can convert to JPG after if you need a smaller file.

Question 11

Does this count as a browser-only tool?

Accepted Answer

No. The badge on the page says the file is uploaded.

AI Image Upscaler - 2x or 4x on Our Servers