Thu Apr 02 2026 08:00:00 GMT+0800 (Taiwan Standard Time)

Free background remover that stays in the browser

How to remove a background for free without an account, a watermark, or an upload. LocalBG runs the cutout on your device.

A free background remover only stays free if the photo is not the product. Most “free” cutout sites take the file, run it on their GPU, and pay for that with ads, accounts, or a cap on resolution. LocalBG is arranged the other way around: the page is a static site, the model runs in your browser, and the image bytes are never placed in a request body.

You can open the remover and drop a JPG, PNG, or WebP. The first visit downloads the BiRefNet-lite weights (about 94 MB) from Hugging Face. That file is a model, not your photo. The browser stores it in Cache Storage, so the next visit skips the download when the cache is still there.

What you get

The output is a PNG. Transparency is the default, which you can see against the checkerboard. If the destination needs a solid color — a marketplace that rejects alpha, or a slide with a paper background — switch the background to white or any hex color before you run the batch. Each finished file can be saved on its own, or the whole set can be zipped in the page. The zip is built with fflate in the tab. It is not assembled on a server.

What “free” does not include

There is no account and no watermark. There is also no cloud queue, so a very large original is scaled so the long edge stays at or below the size you pick (2048 by default, 4096 at most). The model itself always looks at a 512×512 view. That is the resolution that fits in ONNX Runtime Web; a 1024 BiRefNet export runs out of memory in the browser. For a product shot or a portrait on a simple background, 512 is enough to get a clean matte, and the mask is scaled back to the size you asked to download.

If you need the reasoning behind the license, the licenses page names the MIT weights and the runtimes that were deliberately left out.