Green Screen Wizard vs Knockout API
Green Screen Wizard
greenscreenwizard.comKnockout API
useknockout.comSide by side
| Figure | Green Screen Wizard | Knockout API |
|---|---|---|
| Price from | — | $0.02/mo |
| Free plan | — | Yes |
| Free trial | Yes | — |
| Open source | — | — |
| Web | — | Yes |
| Windows | Yes | — |
| macOS | Yes | — |
| iOS | Yes | — |
| Android | Yes | — |
| API | — | Yes |
| Plans published | 3 | 7 |
| Spec score · Green Screen Software | 8.0 (#12) | 8.0 (#13) |
| Audience | The maker describes the Full edition for home and student photographers and the Pro editions for professional, school, or event photographers. | The site positions Free for evaluation, side projects, and open-source work; Pay-as-you-go for side projects and early startups; Plus for designers, agencies, and power users; and Volume for production workloads. |
| Purpose | Green Screen Wizard is standalone chroma key photo software for replacing green or blue screen backgrounds, and its main photo software does not require Photoshop. | Knockout provides image and video processing tools through a browser app and API. |
| Security | The demo download page says downloads are code signed with DigiCert; the privacy statement says the site uses a secure processing server when collecting information and retains no credit card information on its site. | The privacy policy says API tokens are SHA-256 hashed, passwords are managed by Supabase Auth using bcrypt, and traffic is encrypted via TLS. |
| Support | The maker provides support by email and offers serial number lookup, reset/update, and offline activation-code wizards. | The site lists community support for Free, email support for Pay-as-you-go, and Slack support for Volume. |
Plans
Green Screen Wizard
- Green Screen Wizard Full$129.95, paid once
- Green Screen Wizard Pro Studio with Editor$199.95, paid once
- Green Screen Wizard Pro Batch and Event$249.95, paid once
Knockout API
- FreeFree
- Pay-as-you-go$0.02 a month
- Knockout Plus$10 a month
- FreeFree
- Pay-as-you-go$0.02 a month
- Knockout Plus$10 a month
- VolumePriced on request
In their own words
Green Screen Wizard
Green Screen Wizard is standalone chroma key photo software for replacing green or blue-screen backgrounds without requiring Photoshop. It accepts JPEG backgrounds, and customers do not need to buy backgrounds from the maker. Processing tools include transparency controls, spill calculations, edge blending, hair restoration, and transparent PNG output. Pro Studio adds an Airbrush Editor, image comparison, background gallery, annotation, shadow generation, and effects such as reflections, lighting, and skin smoothing. Pro Batch adds batch processing and email capability. Event Mode can preview, save, email, message images to a phone, or print them. Full PC, Pro, and Pro Batch editions include a no-cost Lightroom Link. One-time plans are $129.95 USD for Full, $199.95 USD for Pro Studio with Editor, and $249.95 USD for Pro Batch and Event. Demos are downloadable for Windows and Mac standalone software. Licenses install on four computers.
Knockout API
Knockout API provides image and video processing through a browser app and API. Its image tools cover background removal and replacement, batch processing, masking, smart crop, stickers, outlines, shadows, and inpainting; the API also handles upscaling, portrait restoration, colorization, and object removal. Video background removal runs asynchronously, with job polling for progress. The browser Canvas supports layered designs with text and effects, and users can save canvases and cutouts to a free account. Developers can connect through REST, any HTTP client, or official Node, React, Python, and CLI options. The service says it manages GPU processing, endpoint updates, usage records, credentials, teams, and billing. Its privacy policy says uploaded images are processed in GPU worker memory, not retained after the response, and not used to train models. The Free plan is free, with 30 images per month and 60 requests per minute. Pay-as-you-go is $0.02 a month, with metered usage billed monthly; Plus is $10 a month. Paid tiers have no monthly cap and a 600-request-per-minute limit.