What does Remove Background do?
Remove Background separates the main subject of a photo – a person, a pet, a product, a car – from everything behind it and gives you a PNG with a transparent background, or the subject on a solid colour. Use it for product listings on a white background, profile pictures, stickers, presentations, collages and design mock-ups.
AI that runs on your device
Most background removers upload your photo to a server. This one doesn't. It uses U²-Net, an open neural network for salient object detection published under the Apache-2.0 licence, executed by onnxruntime-web as WebAssembly inside your browser. The first time you use it, the browser downloads the model from our own server and keeps it in its cache; after that it starts much faster. Your photo never leaves your device, so the tool is free, has no limits per day and needs no account.
There are two models. Fast (about 4.4 MB) works well for people, products and objects that stand out clearly from the background. Quality (about 42 MB) gives cleaner, more accurate edges and copes better with busy scenes, at the cost of a larger first download and a slower run on phones.
Refining the result
The model produces a soft mask that says how likely each area is to be foreground. The cut-off slider decides where background ends: raise it if bits of background remain, lower it if parts of the subject disappear. Edge softness controls the transition – low values give hard, clean cut-outs for products, higher values keep natural, feathered edges around hair and fur. These adjustments are instant because the model does not need to run again. Use Show original to compare.
How to remove a background
- Drop your photo, choose it or paste it with Ctrl+V.
- Choose the Fast or Quality model and click Remove background.
- Adjust the cut-off and edge softness, and pick a transparent or coloured background.
- Click Save image and download the result at full resolution.
Frequently asked questions
Why is it slow the first time?
The model has to be downloaded and compiled once. Later images reuse it and take a few seconds.
Which photos work best?
One clear subject, in focus, with some contrast against the background. Fine hair, glass and objects that blend into the background are the hardest cases.
Does it work on phones?
Yes, on recent phones. Very large photos need a lot of memory; if it fails, resize the photo first.