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Upscale an image with AI

Upscale images 2× or 4× with a Real-ESRGAN AI model that runs in your browser, for sharper enlargements with no upload. Free and private.

  • Files never leave your device
  • Free, no sign-up
  • No watermark

Good to know: Upscaling runs an AI model on your device. It is fastest on a computer with WebGPU; phones may take a while on large images.

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About AI Image Upscaler

Enlarge small or low-resolution images without the usual blur. A Real-ESRGAN super-resolution model reconstructs edges and textures as it scales your image 2× or 4×, which makes old photos, thumbnails, logos and product shots usable at larger sizes. The model runs locally in your browser, using your graphics card when available, so the image never leaves your device.

How to use AI Image Upscaler

  1. 1

    Drop the small image you want to enlarge.

  2. 2

    Choose 2× or 4× upscaling.

  3. 3

    Wait while the AI model processes the image tile by tile.

  4. 4

    Compare the result and download the larger image.

Why use this tool

  • Real-ESRGAN super-resolution for sharper enlargements.
  • 2× and 4× scale factors.
  • Uses WebGPU acceleration when your browser supports it.
  • No upload, no credits and no watermark.
  • Model cached after first use.

Frequently asked questions

Normal resizing stretches pixels and looks blurry. The AI model predicts plausible detail, so edges and textures stay crisper.

Super-resolution is demanding. It is fastest on computers with WebGPU support and a decent graphics card. Large images are processed in tiles.

Photos and illustrations that are small but in focus. Heavily compressed or very blurry images improve less.

No. It downloads once (about 5 MB) and is cached by your browser.

There is no fixed limit, but 4× upscaling of a large image needs a lot of memory. Start with 2× on phones.

No. Your images are processed by your own browser and never sent to CodeMites or any other server.

Yes. There is no account, no watermark and no usage limit. The tool runs in your own browser, so there is no server cost to charge you for.

Yes. It runs in any modern browser on Android and iOS as well as on Windows, macOS and Linux, with nothing to install.

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