Drag & drop or click to upload
Max 10MB - Ctrl+V to paste
Max input: 1000 x 1000 px - 10 MB - GPU processed on server
How to use AI Upscaler
- 1
Upload your image
Drop a JPG, PNG, or WebP image (max 1000×1000 px input).
- 2
Select scale factor
Choose 2×, 4×, or 8× magnification. Higher factors take longer.
- 3
Wait for AI processing
Our GPU-powered Real-ESRGAN model enhances your image. This takes 5–30 seconds.
- 4
Download the upscaled image
Download your high-resolution result in the original format.
Features
- +Powered by Real-ESRGAN — state-of-the-art AI upscaling
- +2×, 4×, and 8× magnification options
- +Preserves fine details, textures, and edges
- +GPU-accelerated on RTX 3070 for fast processing
- +Supports JPG, PNG, and WebP input
- +Completely free — no watermark, no signup
Frequently Asked Questions
What is AI image upscaling?
AI upscaling uses a deep-learning model (Real-ESRGAN) trained on millions of image pairs to intelligently add detail when enlarging, unlike traditional bicubic scaling which just blurs.
What is the maximum input size?
Input images up to 1000×1000 px (1 megapixel). At 4× this outputs a sharp 4000×4000 image.
How long does upscaling take?
2× takes about 5–15 seconds, 4× takes 15–30 seconds, and 8× (applied twice) may take 60+ seconds.
What file formats are supported?
JPG, PNG, and WebP are supported for both input and output.
Is it really free?
Yes — ScaleImg is completely free with no watermarks, no file limits per session, and no signup required.