Remove Backgrounds in Batches
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Server Settings
API Keys are stored on server only, never sent to browsers
BRIA RMBG-1.4: cleanest edges, de-blackening, zero cost; Local model: lightweight; Doubao: pay-per-use
Doubao API Key Status (only needed for Doubao engine)
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Recommended: set env var ARK_API_KEY on server (safer). This box will lock automatically.
Default: doubao-seedream-5-0-lite-260128
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