AI Photo Upscaler

About the Free AI Photo Upscaler

The AI Photo Upscaler enlarges small or blurry images up to 4× their size using Real-ESRGAN, the popular AI super-resolution model, running entirely in your browser via ONNX Runtime Web. Upload a tiny image — a cropped face, a low-res screenshot, an old thumbnail — and get a larger, cleaner version you can download as PNG.

Key Features

• 4× AI Super-Resolution: Real-ESRGAN x4plus reconstructs crisp detail instead of simply stretching pixels.
• No Upload Needed: The image never leaves your device — the model runs locally on your CPU.
• One-Time Model Download: The ~67 MB model streams once from Hugging Face, then the browser caches it for fast repeat use.
• Smart Auto-Scaling: Inputs are scaled to a 320px longest side before inference so your browser can finish in reasonable time, then output up to 1280×1280.
• Progress Feedback: Clear phases (download → optimize → upscale → render) with a progress bar.
• PNG Download: Save the high-resolution result with one click.

Great for Art, Prints, and Social Posts

Breathe new life into low-res images: upscale a pixelated sticker or logo for print, sharpen a cropped portrait, restore an old photo before printing, or create a high-quality base for social media graphics — all locally.

Pro Tips

• Upscale photos or graphics with fine detail for the best results — heavy JPEG noise may reappear as artifacts.
• Keep the source reasonably sharp to begin with; Real-ESRGAN enhances detail but cannot invent it from an extreme blur.
• For big images, let the tool auto-downscale the input so processing stays fast.
• First run downloads the model; subsequent runs reuse the browser cache instantly.

How It Works

1. Upload a small image (PNG, JPG, or WebP).
2. Click Upscale 4× with AI and watch the progress through each phase.
3. Compare the result and the elapsed time.
4. Use Download PNG to save the upscaled image.