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Real-ESRGAN ×4 · in-browser

Upscale image to HD — free & private

Enlarge images up to 4× with Real-ESRGAN super-resolution, running entirely in your browser. No upload, no queue, no watermark on your export.

0 bytes uploadedUpscale model: ready

Drop your image here, or click to browse

PNG / JPG / WebP — longest side up to 2048px for in-browser processing · You can also paste an image (⌘V)

No image handy?

What is AI super-resolution?

Real-ESRGAN is a neural network trained on real-world image degradation. Unlike a simple resize, it reconstructs plausible high-frequency detail — sharper edges, recovered texture, cleaned-up compression artifacts. ClearPix runs the model in overlapping tiles on your own GPU (WebGPU) or CPU (WebAssembly), so even large images process safely without any server.

When to use 2× vs 4×

  • 4× — small thumbnails, compressed social-media saves, AI-art drafts.
  • 2× — moderate enlargements where you want a natural, less sharpened look.
  • For very large sources, downsize first and let the model rebuild the detail.

Only process images you own or have explicit permission to modify.