How it works, and what stays on your device
The tool uses the IS-Net segmentation model. 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 output can keep the original dimensions, but edge accuracy is limited by the inferred mask. 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; processing time then depends on the photo, browser and device.
- Press Compare on a picture to check the edges against the original, 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.
After removing the background in Batch, choose Touch up on the result card. Its Restore and Erase brushes let you correct the cutout mask; adjust the brush size for fine edges. Image Editor separately offers Erase/restore on a selected image layer. Inspect fine edges against both light and dark backgrounds.
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, add Resize from the Also row and choose a preset with Pad, which adds white margins without cropping the product; add Compress for a size limit such as 200 KB. It all happens in the same pass, so the picture is saved only once.
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 supports transparency; compare the result and check the receiving app, or use PNG for broad compatibility. 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.