After months of building, I'm sharing U-Ultra/Unity — a free online toolkit for image and PDF processing.
What it does:
- 72+ tools across image editing and PDF manipulation
- 100+ format support (JPG, PNG, WebP, HEIC, RAW, PDF, DOCX, XLSX...)
- Handles files up to 5GB
- No download, no registration for basic use
Tech stack: FastAPI + Vue 3 + PostgreSQL + Redis + Celery on Docker. All file processing happens server-side with automatic cleanup after completion.
Monetization: Freemium. Free tier covers most use cases. Pro ($9.99/mo) and Unlimited ($29.99/mo) for power users.
Ask me anything about the tech, the business model, or building in public!