The Auto Upscale Addon adds image upscaling to Blender, producing higher-resolution versions of your rendered images for improved visual quality. Because the upscaling happens after rendering, you can render at a lower resolution and speed up the iterating process.
You can work in automatic mode for a hands-free pass or switch to manual control to fine-tune the output. Scale factors of 2x, 3x, 4x, and 8x let you set the upscale level per project, and a method selection option lets you prioritize speed or quality. Resolution Sync automatically matches the render resolution to the selected upscale factor for consistent output.
The add-on is released under the GPL license and lists support for Blender 4.1, 4.0, and 3.6. It installs its own dependencies, and one known issue means Blender may need a restart before the add-on is fully enabled. The developer welcomes feedback and feature requests to shape future updates.