Desktop Optimized (GPU Required)
Running Locally via WebGPU

AI Image Upscaler (RealESRGAN 4x)

Upscale low-resolution images by 400% without quality loss. Restore details using Generative Adversarial Networks.

RealESRGAN x4 General

Ready to Start

Drag & drop your image here

Supports JPG, PNG, WEBP

Upload an image to start
Running locally via WebGPU
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Turn Low-Res into High-Def Instantly

Have a tiny, pixelated image that you can't use? Mutlac AI Upscaler solves this problem by increasing image resolution by 400% (4x) while simultaneously sharpening edges and hallucinating missing details.

Unlike traditional "Bicubic" or "Bilinear" resizing which just blurs pixels, our tool uses Real-ESRGAN (v3), a Generative Adversarial Network. It "imagines" what the image would look like if it were taken with a high-resolution camera.

Standard Resize

Traditional tools just stretch the existing pixels.

  • ❌ Blurry results
  • ❌ Pixelated edges
  • ❌ No new details added

Mutlac AI Upscale

Our AI reconstructs the image from scratch.

  • ✅ Crisp, sharp lines
  • ✅ Textures reconstructed
  • ✅ 400% Resolution Boost

Best Use Cases

  • 🎨 Anime & Digital Art

    RealESRGAN is legendary in the anime community. It keeps lines razor-sharp and removes JPG compression noise from wallpapers and fan art.

  • 🖨️ Print Quality Assets

    Need to print a logo or icon but only have a small file? Upscale it to 4K to ensure it looks professional on paper or banners.

  • 📸 Midjourney & AI Art

    AI generators often output small images (1024x1024). Use our tool to upscale them to 4096x4096 for final publishing.

Local Processing = Maximum Speed

Uploading a 10MB image to a server, waiting for a queue, and downloading it back takes time. With Mutlac, the AI model runs directly on your graphics card (GPU). There is no queue. The moment you drop the file, the magic begins.

Technical Specs

Version3.0.0
Categoryimage
Processing Client-Side
AuthorXintao Wang et al.
  • 100% Private

    Data is processed in RAM and never leaves your browser.

  • Unlimited Usage

    No credits system. Use the tool as much as you want.

  • Professional Quality

    High-fidelity output suitable for commercial use.

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