2× or 4×
Pictures are processed in tiles so even phones can handle them. Swin2SR, an open-source super-resolution model, does the work on your device.
- 2× - quick, for sharper photos and screenshots.
- 4× - a model trained to repair compressed JPG photos (blocky, smeared WhatsApp-style images).
What to expect
Upscaling adds realistic detail, but it cannot invent information that was never there - a face that is a few pixels wide will not become a portrait. It shines on photos that are a bit small, soft or blocky.
Questions
What is the largest picture I can upscale?
Up to 1024 px (2×) or 512 px (4×) on the longest side per run; bigger pictures are reduced first. That gives results up to 2048 px.