FAQ
Technical
6 questions in this category.
What browsers are supported?
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.
How does the AI work?
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.
Why is the first run slow?
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.
What is the maximum image size?
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.
How do I process multiple images?
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.
What image formats can I upload?
PNG, JPG/JPEG, WebP, AVIF, and HEIC (iPhone photos). Animated images (animated GIF, animated WebP) are supported but only the first frame is processed.