NightyCode
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Background Remover

Remove the background from any image in seconds. It runs on your device, so nothing gets uploaded.

Drop your images here or paste with Ctrl V. PNG, JPG or WebP, one or many at once. Choose images

Your images never leave your device. The AI runs right in your browser. The first time, it downloads the AI (up to about 500 MB) and keeps it for next time.

How it works

  1. Add your images

    Drop them on the page, paste with Ctrl+V or pick them. One at a time or a whole batch.

  2. The AI cuts out the subject

    A neural network finds the subject and removes everything behind it, right in your browser.

  3. Touch it up

    Erase or restore any spot by hand, or brush roughly with the Magic brush and let the AI find the edge. Add a new background, an outline or a shadow, and crop to the subject.

  4. Download

    Save a full-size PNG or WebP with a see-through background, or download the whole batch as one ZIP.

Questions

Are my images uploaded anywhere?
No. The AI runs on your own device, inside your browser. Your images are never sent to my website or to anyone else. Only the AI itself is downloaded, once, from a public model library.
Why does the first image take longer?
The first time, your browser downloads the AI: about 500 MB for Best, 120 MB for Fast (95 MB on phones). It is saved on your device afterwards, so your next visits start in seconds with no download.
What is the difference between Best and Fast?
Best is the full BiRefNet model: the most exact edges, especially hair. It needs a browser with WebGPU, like recent Chrome, Edge or Safari, and a bigger first download. Fast is the smaller BiRefNet-lite: quicker and lighter, and it works on every modern browser and phone.
How do I fix a spot the AI got wrong?
Two ways. Erase & restore paints by hand and never asks the AI again: Erase removes, Restore brings the original picture back. The Magic brush asks the AI about only the part you brush over, in much more detail, and keeps its exact edge. Every stroke can be undone and redone (Ctrl+Z, Ctrl+Y).
Does it work for Roblox characters, logos and renders?
Yes. It is a general model, so it handles avatars, items, game screenshots and normal photos. Logos and icons on one flat color are cut out by that color instead, which keeps holes in letters and crisp edges.
Is it really free? Any watermark?
Free, no sign-up, no watermark, full resolution. I made it for creators.
Which AI does it use?
BiRefNet for Best and BiRefNet-lite for Fast (by Zheng Peng and others, MIT license), running with Transformers.js and ONNX Runtime Web. The edges are then refined at full size on your device, and logos on one flat color are cut out by that color.

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