AI Tool
AI Image Upscaler
Increase image resolution 2× or 4× using Swin2SR super-resolution AI. All processing happens locally in your browser — your images are never uploaded anywhere.
100% browser-basedNo upload requiredFree foreverWorks offline
How it works
- Drop any JPG, PNG, WebP, or AVIF image
- 2× — AI super-resolution using Swin2SR (~47 MB model, downloads once and caches)
- 4× — AI 2× upscale followed by bicubic 2× for 4× total output (faster than full AI 4×)
- Large images are split into 512×512 tiles processed sequentially
- Output is always lossless PNG to preserve every detail