Is this tool free?
The page is designed as a free online tool flow with batch selection, processing and download.
Free Online Image Upscaler, AI Lossless 4x Enhancement
Up to 10 images, 2 MB each, longest edge up to 640 px
Upscale factor
No images yet
Supports JPG、PNG、WebP
What AI 4x image upscaling is good for
AI model improves images up to 4x resolution
Batch upscaling with ZIP download
Processed locally in the browser with no image upload
Upscale factor
2x / 4x
AI model
ESRGAN super resolution
free online image upscaler: local processing and privacy
AI upscaling runs a browser model loaded from this site. Your images are not uploaded to a server.
free online image upscaler FAQ
How good is the upscaling result?
It uses a browser ESRGAN super-resolution model. It works best for low-resolution products, illustrations, icons and assets; extremely blurry images, tiny text or heavy noise may limit the result.
Are images uploaded to a server?
No. The AI model runs in the browser and model files are loaded from this site; your images are not uploaded to a server.
Why is the longest edge limited to 640 px?
4x upscaling increases computation and memory use, so the limit keeps browser-side processing stable.
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