Remove the background from a photo without uploading it
Removing a background used to mean a steady hand with a lasso tool, and more recently it means uploading your photo to someone's server and paying for the full-resolution result. Toolkitta's Background Remover does the cutting on your device instead: an AI model is downloaded to your browser once, and after that each photo is separated from its background right there, at full resolution, with nothing sent away. This guide covers what the tool does well, where any automatic cut-out struggles, and how to get a clean white background for a listing or a transparent PNG for a design.
How it works, and what stays on your device
The tool uses IS-Net, an open segmentation model published by its researchers under the Apache 2.0 licence. It looks at a 1024 × 1024 copy of your photo and decides, for every point, how likely it is to belong to the main subject. That decision — a soft greyscale mask — is then stretched smoothly over your original picture, so the subject keeps every one of its original pixels even when the photo is 20 or 40 megapixels. Nothing is repainted or regenerated; pixels are only kept or made transparent.
The model file is about 46 MB. It is served from toolkitta.com, not a third party, and only when you press Remove background for the first time. Your browser keeps it, so the next visit starts in a few seconds without downloading it again; clearing site data or using a private window means downloading it once more. Your photos themselves are never uploaded: the model runs in the page, and the results exist only in the tab until you download them.
Step by step
- Open the Background Remover and add up to 20 photos — JPG, PNG, WebP, HEIC from an iPhone, AVIF and the other formats the site reads.
- Choose the new background: Transparent for a cut-out you will place elsewhere, White for marketplace listings, or Colour for a brand shade or a passport-style backdrop.
- Pick the format. Transparent results can be PNG or WebP; with a white or coloured background JPG is offered too and is usually far smaller.
- Tick Trim empty space if you want the result cropped tightly around the subject, which is handy for stickers, logos and product images.
- Click Remove background. The first run shows the model download; after that each photo takes about a second with a graphics card, longer without one.
- Open the preview, switch between Result and Original, zoom to 100 % on the edges, then download one by one, as a ZIP, or send the results on to another tool.
What comes out clean, and what needs a second look
Automatic cut-outs are at their best with one clear subject that stands apart from its surroundings: a person against a wall, a dog on grass, a shoe on a table, a car on a street. In our tests an apple on a white background, a car photographed side-on, a painted portrait and a pet all came out with clean outlines and no leftover background.
- Hair and fur: fine strands are kept as soft, partly transparent edges; a few may be lost or keep a trace of the old colour. Check them at 100 % zoom.
- Glass, smoke, veils and water: see-through things are hard for any model. Expect them to be kept solid or dropped.
- Low contrast: a black cat on a dark sofa or a white cup on a white table can lose parts of its outline.
- Several subjects or busy scenes: the model keeps what looks like the main subject. A group photo is usually treated as one subject; a person holding a sign may keep or drop the sign.
- Large soft areas: occasionally part of a subject comes back half transparent. If a result looks washed out over a checkerboard, try the photo with a little more of the background cropped away first.
There is no manual eraser yet, so if a result is not right, the most effective fixes are to crop closer to the subject before running it (the Image Cropper can send the crop straight back), or to use a photo where the subject stands out more clearly from what is behind it.
White backgrounds for listings, transparent PNGs for design
Marketplaces and shop platforms often ask for the product on a plain white background that fills most of the frame. Choose White, tick Trim empty space, and save as JPG: the product comes out on pure white with a small margin, and the JPG is a fraction of the size of a PNG. If the platform wants a fixed square size, send the result to the Image Resizer and use a preset with Pad, which adds white margins without cropping the product.
For design work — a slide, a poster, a thumbnail, a sticker — keep Transparent and save as PNG, which stores the soft edges exactly. WebP also keeps transparency and is smaller, and most current apps open it; use PNG when you are not sure. JPG cannot store transparency at all, which is why it only appears once a background colour is chosen.
Every result is rebuilt from pixels, so camera details and GPS location are removed along the way. Keep your original if you need that information.
Speed and devices
Browsers with WebGPU — current Chrome and Edge on most computers — run the model on the graphics card. On a MacBook Pro with an M2 Pro chip the model itself took about a third of a second per photo; saving a large PNG added a few seconds. Other browsers use the processor: the same laptop needed roughly eight seconds per photo, and older or low-power machines can take considerably longer. Phones work but have less memory, so run a few photos at a time rather than twenty large ones. The tool says which of the two it is using once the model has started.