Frequently Asked Questions

NSS Background Remover is a free, browser-based AI tool that removes image backgrounds and exports files with true alpha channel transparency. It runs entirely in your browser — no upload, no server, no account required.

No. There is no account system. You can start removing backgrounds immediately without providing an email address or any personal information.

NSS Background Remover is built by Novus Stream Solutions, a small Canadian software company. It started as an internal tool and was released publicly when we realised there was no free option that got the alpha channel right.

Yes. You own the output of your work. NSS makes no claim to images you process or export. See the Terms of Service for details.

Chrome 94+, Edge 94+, and Opera 80+ provide the best experience with WebGPU acceleration. Firefox 90+ and Safari 16.4+ work via WebAssembly (slower inference, same output quality). iOS Safari 16+ is supported; older versions show a compatibility notice.

The tool uses Transformers.js to run ONNX-format neural networks directly in your browser. On supported hardware, inference runs on your GPU via WebGPU. On others, it falls back to multi-threaded or single-threaded WebAssembly. No cloud API is used.

The AI model weights need to download the first time (~80 MB for Fast, ~180 MB for Best Quality). After that, they are cached in your browser and subsequent runs are fast. A progress bar shows the download status.

Images up to 4096 × 4096 pixels are processed at full resolution. Larger images are automatically downscaled for inference, then the full-resolution mask is upscaled back — so your export is always at your original dimensions.

Upload all images at once by selecting multiple files or dragging a group. They enter the queue and process sequentially. When done, click "Export all" to download a ZIP file containing all results.

PNG, JPG/JPEG, WebP, AVIF, and HEIC (iPhone photos). Animated images (animated GIF, animated WebP) are supported but only the first frame is processed.

No. Your images are processed entirely on your device and never transmitted to any server. The AI runs locally in your browser. We have no technical ability to access your images.

With your consent: anonymous page view counts (Vercel Analytics). Without consent: nothing beyond standard HTTP headers logged by Vercel's hosting infrastructure. See the Privacy Policy for full details.

Yes. Because nothing leaves your device, sensitive images (medical, legal, personal) are as safe here as they are on your local filesystem. We recommend reviewing our Privacy Policy and the browser's DevTools network tab to confirm no image data is transmitted.

Yes. After your first visit, the app shell and AI models are cached locally by the service worker. You can remove backgrounds without an internet connection.

No personal data or image data is shared. Third-party services we use (Vercel for hosting, Google AdSense for ads) receive only what is described in our Privacy Policy — never image content.

The AI models are open-source and the compute runs on your hardware. Our only real cost is hosting. The app is supported by non-intrusive display ads, which cover running costs without compromising the experience.

No usage limits. You can process as many images as you like. The only practical limit is your device's memory — the queue supports up to 20 images loaded at once.

That is our intention and commitment. Quality is our brand — a paywall on quality would undermine the whole point. The tool will remain free and ad-supported.

Because quality IS the brand. Locking better AI behind a paywall would mean the free version is deliberately degraded to upsell you. We refuse to do that. The same full-quality models run whether you're on your first image or your thousandth.

Remove.bg is a paid API/service that processes images on their servers. NSS is free, processes images on your device (complete privacy), works offline, and exports true straight-alpha transparency. Remove.bg does have a polished UI and fast cloud processing; NSS trades that for privacy and cost.

Canva's tool requires an account, uploads your images to their servers, and requires a paid plan for high-volume use. NSS is free, requires no account, and never uploads your images. For transparency quality, NSS outputs straight alpha which composites correctly everywhere; Canva's output can have premultiplied alpha issues in professional tools.

Most free tools export premultiplied alpha, which bakes the background colour into edge pixel RGB values. When Photoshop (which expects straight alpha) reads the file, those "transparent" pixels appear black. NSS always exports straight alpha — validated automatically after every export.

Three things: true straight-alpha exports (verified automatically), complete on-device privacy (architectural, not just policy), and genuinely free with no quality paywall. Most tools get one of these right. NSS gets all three.