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GigAI Tools

Upscale Images 2x & 4x

Make small pictures bigger and sharper, a trained ESRGAN super-resolution model rebuilds edges and texture at 2x or 4x, right inside your browser.

100% browser · on-device AIFree · no sign-up
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What is the ai image upscaler?

The AI Image Upscaler enlarges photos and graphics 2x or 4x using a real ESRGAN super-resolution model powered by UpscalerJS and TensorFlow.js. Rather than stretching pixels, it reconstructs sharp edges and texture. Model weights download once and cache. Inference runs in your browser, so nothing is uploaded. Free, transparency preserved.

The GigAI Image Upscaler enlarges your image to two or four times its original size using a real super-resolution neural network, an ESRGAN model powered by UpscalerJS and TensorFlow.js, that runs entirely inside your browser tab. Instead of naively stretching the pixels you already have, the trained model predicts and reconstructs the fine detail a larger image should contain, so edges come back crisp, textures stay believable and gradients stay smooth. Drop in a photo, product shot or logo, choose 2x or 4x, and download a larger, sharper file. No account, no watermark and nothing uploaded. The model weights download once on first use and are cached in your browser, so the first run takes a little longer while everything after is fast. It's genuine AI upscaling for moderate enlargements: it rebuilds plausible detail, but it can't recover information a low-quality or heavily blurred source never captured.

Difficulty:
Easy
Typical time:
~10s
Processing:
100% browser · on-device AI

Last updated

How to use the ai image upscaler

  1. 1

    Add your image

    Drag a photo or graphic onto the drop zone, click to browse your files, or paste an image straight from your clipboard.

  2. 2

    Choose 2x or 4x

    Pick how much bigger you want it. The tool previews the exact output width and height so you know what you'll get before processing.

  3. 3

    Upscale with AI

    Hit Upscale to run the ESRGAN model locally. The first run downloads the model, so give it a moment. The before/after view then shows the original beside the sharper result.

  4. 4

    Download

    Save the enlarged file. If 4x looks too soft for a very low-quality source, drop back to 2x and run it again.

What AI Image Upscaler includes

  • Real ESRGAN super-resolution

    A trained neural network reconstructs the detail a larger image should have: rebuilding edges and texture instead of simply stretching the pixels you started with.

  • Sharp edges, believable texture

    The model restores crisp lines and natural surface detail, so enlargements avoid the soft, staircased look you get from a plain nearest-neighbour or bilinear blow-up.

  • See the new dimensions

    Pick a factor and the tool shows the exact output resolution before you commit, an 800×600 photo becomes 1600×1200 at 2x or 3200×2400 at 4x.

  • Runs on your device

    Inference happens locally in your browser via TensorFlow.js. The model weights download once on first use, cache for next time, and your image never touches a server.

  • Keeps transparency

    Upscale a PNG logo or cut-out and the alpha channel comes along, so transparent backgrounds stay transparent at the larger size.

Why use our ai image upscaler

Nothing leaves your device

Upscaling runs entirely in your browser tab. The neural network loads and executes locally, your image is read, enlarged and downloaded on your own machine. Never uploaded, stored or seen by anyone.

Rescue small source images

Got a picture that's too small for a slide, a print or a hero banner? A 2x or 4x super-resolution pass rebuilds detail and gives you the pixel dimensions those layouts demand.

Fast after the first run

The model downloads and caches on your first upscale. Every run after that is quick. Try 2x and 4x back to back and keep whichever result looks best.

Free with no catches

No sign-up, no watermark and no daily cap. Upscale as many images as you like. The only practical limit is your device's memory and speed for very large outputs.

Supported formats

Accepts JPG, JPEG, PNG, WebP and GIF, and produces PNG, JPG and WebP, all processed locally in your browser.

Input formats
  • JPG
  • JPEG
  • PNG
  • WebP
  • GIF
  • BMP
Output formats
  • PNG
  • JPG
  • WebP

Frequently asked questions

Your privacy is built in

Everything runs 100% in your browser. Your files are never uploaded to a server, never stored, and never seen by anyone but you.

  • Runs in your browser
  • No uploads
  • Nothing stored

Ready to try the ai image upscaler?

Free, private and instant. AI Image Upscaler runs right in your browser.