AI Background Removal — Free, Fast & Private
AI background removal used to require uploading your photo to a cloud service that charged per API call, watermarked free output, or quietly stored your image for training. MiniPx changes that by running the entire AI pipeline in your browser via WebGPU. The model file (BiRefNet, ~180 MB) downloads once and caches; subsequent removals are 1-5 seconds and require no internet.
BiRefNet is a 2024 salient object segmentation model that beats the previous U-Net generation on hair, fur, and translucent edges. The same model that some paid cloud services use is now open and runs locally on any device with WebGPU support — Chrome and Edge 113+, Safari 17.4+, Firefox 121+.
Why this matters: your image stays private (verifiable in DevTools), there's no quota or API limit, and cost is zero — no per-call fees, no monthly cap. For Pro workflows the $4.99/mo plan unlocks 4096px output, removes the watermark, and adds the background-compose colour palette for marketplace listings.
Start at the Background Remover. Also see the Passport Photo Maker, which composes the AI cutout onto spec-compliant backgrounds for visa and ID photos.