or paste an image ⌘ / Ctrl + V or
No image?
Try one of these:
JPG, PNG or WebP · up to 20 MB per image.
On-device mode processes images for free inside your browser and never auto-uploads on failure. First use downloads the Lite model and browser runtime.
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Call POST https://remove.ac/v1.0/removebg backed by serverless NVIDIA L4 GPUs. Includes 1 free credit on signup, atomic FEFO billing, and RAM-only ephemeral image processing.
curl -X POST https://remove.ac/v1.0/removebg \ -H "X-Api-Key: rac_live_YOUR_API_KEY" \ -F "[email protected]" \ -F "size=auto" \ -o no-bg.png
Your API key stays in volatile page memory only and is never written to localStorage. Successful calls use 1 credit; failed calls charge 0.
remove.ac exposes a production REST API 1:1 compatible with the remove.bg v1.0 contract. Existing scripts migrate by pointing to https://remove.ac/v1.0/removebg and passing X-Api-Key.
Billing uses atomic Postgres FEFO credit holds: 1 credit is captured only after inference succeeds (X-Credits-Charged: 1). Validation errors, upstream timeouts, or network failures release the hold immediately with 0 charge.
# Query remaining credits (0 credits charged) curl -s https://remove.ac/v1.0/account \ -H "X-Api-Key: rmac_live_YOUR_API_KEY"
Accepts multipart/form-data or application/json payloads up to 20 MiB per image (JPG, PNG, WebP):
| Parameter | Behavior |
|---|---|
| image_file / image_file_b64 / image_url | Provide one source: binary file upload, Base64 string, or public HTTPS image URL (protected by strict SSRF guards). |
| size | preview / small / regular (0.25 credits, up to 0.25 MP); medium / hd / 4k / full / auto (1 credit, full resolution). |
| format / channels | format: auto / png / jpg / webp / zip; channels: rgba (default cutout) or alpha (8-bit grayscale alpha matte). |
| type / type_level / roi | Full SDK compatibility for subject hints (auto / person / product / car / animal / graphic / transportation), type_level, and roi. |
| crop / bg_color / shadow_type | crop=true trims transparent margins; bg_color / bg_image_file composites backgrounds; add_shadow / shadow_type controls shadows. |
# Zero-dependency Node.js >= 18 CLI (single file or folder batch) curl -fsSLO https://remove.ac/remove-ac-cli.mjs REMOVE_AC_API_KEY="rac_live_YOUR_API_KEY" node remove-ac-cli.mjs ./photos --output-dir ./cutouts
Pass X-Api-Key: rmac_live_... in request headers (plaintext shown once at creation; server stores SHA-256 hashes only). Include Idempotency-Key (up to 200 chars) for safe retries without double billing; payload mismatches return HTTP 409.
Status codes: 200 binary output · 400 invalid input · 402 insufficient credits · 403 invalid/revoked key · 409 idempotency conflict/in-flight · 502 upstream error (credit hold automatically released).
Cloud L4 GPU workers decode and infer strictly in volatile RAM and never persist input or output image blobs in databases or idempotency caches. If your images must never leave the browser, use the free On-Device mode in the web editor.