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Remove Background: cut out or change a photo's background, on the device - #90
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New Remove Background tool. The background goes as soon as a photo is chosen; then pick what goes behind it (nothing, white, a colour, your own photo or a blur), the size, and touch up any spot with Erase / Restore. - BiRefNet-lite (MIT) runs in a worker with ONNX Runtime Web: on the GPU through WebGPU where available, on the CPU otherwise. It sees the photo at 512 px, which keeps it within browser memory (the 1024 px export needs ~7 GB). Weights are stored as 16-bit floats (103 MB download, cached once) and cast back on load, so the CPU build can run it too. - Phones that report little memory, or where the big model fails, use U2-Net small (Apache-2.0, 4.6 MB). A GPU that fails falls back to the same model on the CPU first. - The mask is fitted to the full-size photo with a fast colour guided filter, and edge colours are cleaned with blur-fusion foreground estimation, so hair keeps its strands and no halo of the old background shows. Output keeps the photo's own resolution; smaller sizes or a custom width are one click away. - Model files and the WebGPU runtime are served in parts from our own origin, like the speech model; the CSP is unchanged. - Strings in all 16 languages, credits in README and the licence files, unit tests for the filters and an e2e test that runs the real model.
Deploying fizzdoc with
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| Latest commit: |
c9a7e26
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| Status: | ✅ Deploy successful! |
| Preview URL: | https://e13a3d64.fizzdoc.pages.dev |
| Branch Preview URL: | https://feat-remove-background.fizzdoc.pages.dev |
The bundled WebGPU build points at its 27 MB binary with new URL(), so Vite copied it into dist/assets, and Cloudflare Pages refuses files over 25 MiB. The extern-wasm build loads its small loader from /bg/ort/ and gets the binary from the parts we already serve.
Cloudflare Pages refuses such files at deploy time; this catches them in the build and in CI, with a hint to split the file into parts.
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New tool at /remove-background/.
For the person using it
How it works
scripts/background-model.py): 103 MB download instead of 192 MB, and the CPU build can still run it. Downloaded once into Cache Storage./bg/ort/, split under 25 MiB) are served from our own origin; CSP unchanged..gitattributesmarks model files binary.Checks
Strings in all 16 languages; credits added to README, THIRD_PARTY_NOTICES.md and third-party-licenses.txt. Tool count 64 → 65.