Drop the same subject into any scene.
Same face. Same outfit. Same jewelry. New world. We matte your subject, generate a fresh background from your prompt, blend the lighting, and layer the original pixels back on top. The face you uploaded is the face you get — byte-for-byte.
A hybrid VFX-artist workflow in your browser. You upload a subject and (optionally) a background — we matte the subject, detect light direction, and suggest a starting placement. You drag, resize, and rotate on a live canvas, then we render the final composite with matched tone and a cast shadow. The subject is never regenerated by a model (pixel-perfect at 0° tilt; BICUBIC-resampled when you rotate).
Hybrid pipeline. Everything automatic except size and position — those, you control on a live canvas. No black-box subject regeneration. No plastic-skin AI redraw.
AI matting (MIT license) cuts an alpha matte at source resolution. Hair wisps, jewelry chains, and transparent shoes are preserved — not flattened.
Bring your own background image — or skip it and we'll AI-generate a subject-free scene plate from the prompt. Either way, the BG is fixed before placement.
A vision model reads the background and infers the dominant light direction, shadow angle, and opacity. The canvas previews this so you can verify before finalizing.
Drag, resize, and rotate the matted subject on a live canvas. Hit Finalize — Lab-space Reinhard color transfer matches tone, a procedural cast shadow grounds the figure at the detected angle, and the final PNG renders in under a second.
Background replacement keeps your subject on a flat backdrop. VFX Compose treats the subject like a film element dropped into a freshly built world — with matched lighting tone, a contact shadow, and a scene-aware silhouette dilation so the AI scene fill doesn't paint a halo of the original studio light around you.
| Provider | What it does | Cost per image |
|---|---|---|
| Generic scene-fill APIs | Diffusion-style scene fill, subject pixels usually preserved | $0.009 |
| Photoroom · AI Background | Scene from prompt, mid-tier matting | ~$0.10 effective on Pro plan |
| Adobe Firefly · Generate Background | Studio-grade fill, subscription gated | ~$0.04 in credits |
| PixelAPI · VFX Compose | AI matting + BG-resolve (upload or AI-generated) + auto light-direction detection + user-controlled placement + color harmonization + procedural cast shadow. Subject never regenerated — pixel-perfect at 0° tilt, BICUBIC-resampled when you rotate. | $0.017 |
Source: each vendor's public pricing page (May 2026). VFX Compose at 50 credits ≈ $0.017 — still cheaper than and an order of magnitude cheaper than Photoroom/Firefly, and you actually control the placement.
Full walkthrough video is coming. In the meantime, the live tool is ready and the docs page has tested cURL examples.
Subscribe to PixelAPI on YouTube for the v2 walkthrough.
📺 Subscribe to PixelAPI on YouTube →Pay-as-you-go credits. No subscription. Free credits on signup. Subject is never regenerated by a model (pixel-perfect at 0° tilt; BICUBIC-resampled when you rotate) — you keep full control of placement.
Sign up, get free credits, and run your first composite in 30 seconds.