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SFX Engine vs GreenOnion

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

SFX Engine compared with GreenOnion
DetailSFX Engine logo SFX EngineGreenOnion logo GreenOnion
What it doesAI sound effect generator that creates royalty-free SFX from text descriptions in seconds AI product image generator that turns one phone photo into complete ecommerce image sets
StageNot given Not given
FoundedNot given Not given
Based inNot given Not given
Pricing modelPaid Paid
PricingStarter: $10/month or $8/month billed yearly for 500 credits. Creator: $25/month (50% off first month) or $20/month billed yearly for 4,000 credits. Pro: $90/month (50% off first month) or $72/month billed yearly for 15,000 credits. Each sound effect costs 3 credits. Browsing and downloading from th Creator: $19/month with 60 credits (30-60 images); Professional: $49/month with 180 credits (90-180 images); Enterprise: $149/month with 600 credits (300-600 images). Images cost 1 credit for 2K or 2 credits for 4K.
Key features
  • AI sound effect generation from text descriptions
  • Sound effects up to 47 seconds long
  • Background music creation
  • DJ transition maker
  • Stem splitter for music
  • Royalty-free commercial license included
  • Free public library of pre-made sounds
  • API access on all plans
  • Voiceover generation
  • Amazon listing images from one phone photo
  • Amazon A+ Content generator with hero images, banners, and brand story modules
  • Etsy product images with handmade-style feel
  • Shopify product images matching DTC brand style
  • AI fashion model photography from one garment photo
  • AI product photography with custom backgrounds and lifestyle scenes
  • Image text and headlines written automatically
  • Translate product images into 15 marketplace languages
  • AI generates high-converting product images in about 60 seconds
  • Create AI product videos from product photos
What makes it different
  • Generated sound effects are royalty-free for commercial use without licensing fees
  • Sounds created from text descriptions are unique to your project
  • Generate sounds in 5-15 seconds typically
  • Supports diverse use cases including games, video, podcasts and music production
  • Cancel anytime with no long-term commitment
  • No prompts or design skills required—upload a photo and get complete image sets instantly
  • Generates complete platform-optimized image sets in about 60 seconds from one photo
  • AI-generated images are production-ready with automatic copy, headlines, and layout optimization
  • Supports 20+ countries and 15 marketplace languages with bulk translation of product images
Free planNot given Not given
Open sourceNot given Not given
PlatformsNot given Not given
Public APINot given Not given
Community votes00
DR (Domain Rating by Ahrefs)40 +1 (up) since last check43 −1 (down) since last check
Trust Flow (Majestic)263
Citation Flow (Majestic)4225
Referring domains (Majestic)85045

5 details filled in for both companies.

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