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4K IMAGE UPSCALER

Upscale Any Image to 4K Online — AI-Powered

Transform any image to 4K resolution (3840×2160 or higher) using Real-ESRGAN AI. Whether it's AI-generated art, photos, illustrations, or graphics — PixelMax upscales with neural precision in ~30 seconds. Preview free, $1 to download.

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Why PixelMax for 4K Upscaling

True 4K with AI Precision

PixelMax doesn't just stretch pixels. Real-ESRGAN neural networks analyze your image and intelligently reconstruct detail during 4× enlargement. The result is true 4K quality — sharp, detailed, artifact-free.

Works With Any Image

Photos, AI art (Midjourney, DALL-E, Gemini, Stable Diffusion), illustrations, graphics, screenshots — any image can be upscaled to 4K. PNG, JPEG, and WebP supported.

Preview Free, Pay to Download

Upload and preview your 4K upscale for free. Only pay $1 when you're satisfied with the result. No subscription, no signup required to preview.

How to Upscale an Image to 4K

1

Upload Your Image

Drag and drop any image into PixelMax — photos, AI art, illustrations, graphics, or screenshots. PNG, JPEG, and WebP formats are supported.

2

AI Processes to 4K

Real-ESRGAN analyzes your image and performs intelligent 4× upscaling. The neural network reconstructs sharp detail in about 30 seconds.

3

Preview & Download

View your upscaled 4K result for free. When you're happy with the quality, download the full-resolution file for just $1.

Frequently Asked Questions

4K typically refers to 3840×2160 pixels (UHD) or 4096×2160 (cinema 4K). For square images, PixelMax 4× upscale takes 1024×1024 to 4096×4096 — exceeding 4K resolution. This is large enough for 13.6-inch prints at 300 DPI.
You can preview upscaled results for free. Downloading the full-resolution 4K file costs $1 per image. No subscription or account required to try it.
Any image: AI-generated art from Midjourney, ChatGPT, Gemini, or Stable Diffusion; photos from your camera or phone; illustrations; graphics; screenshots. PixelMax handles PNG, JPEG, and WebP formats.
Real-ESRGAN is a neural network trained on millions of image pairs to learn how to reconstruct high-resolution detail from low-resolution input. Unlike bicubic interpolation, it adds genuine detail rather than just blurring pixels.
About 30 seconds. Upload your image, select 4× upscale, and your 4K result is ready to preview and download.

Ready to Go 4K?

Transform any image to stunning 4K resolution with AI precision. Preview free, $1 to download.

Start Upscaling →