Erdus |

This content originally appeared on DEV Community and was authored by Tobias

🌍 An open-source universal ER diagram converter

Drag & drop → convert → copy SQL/Prisma instantly.

Every tool speaks a different schema language.

Moving from ER diagrams → SQL → Prisma (or JSON Schema) often means hours of manual rewriting and the risk of losing important details.

I built Erdus to change that — a universal converter powered by a strict Intermediate Representation (IR) designed to unify database models.

What Erdus does

ERDPlus (old/new) ↔ IR
IR → PostgreSQL DDL (ready for Supabase)
IR → Prisma schema
Loss report → transparently shows when features can’t be mapped (e.g. CHECK constraints in Prisma).

⚡ Runs 100% client-side: your files never leave your browser.

Why it matters

Whether you’re a student learning database design or a developer juggling multiple stacks, Erdus makes schema conversions:

Consistent – no surprises between tools.
Transparent – see exactly what’s preserved and what’s lost.
Reproducible – one source of truth, everywhere.

And this is just the beginning — the roadmap includes:

JSON Schema support
Sequelize / TypeORM outputs
Supabase policies & identity annotations
MySQL / SQLite generators

Try it out

GitHub: https://github.com/tobiager/Erdus
Live demo: https://erdus-inky.vercel.app/
Product Hunt: https://www.producthunt.com/posts/erdus

Screenshots

Join the journey

Erdus is open source, and this is only the first step.

If the idea resonates with you:

⭐ Star it on GitHub
🐛 Report issues or suggest features
💡 Contribute to make schema conversions even better

Let’s make working with ER diagrams and database schemas simple, reliable, and open for everyone.

This is just the beginning — feedback, stars and contributions are more than welcome 🙌.

This content originally appeared on DEV Community and was authored by Tobias

Print Share Comment Cite Upload Translate Updates

APA

Tobias | Sciencx (2025-09-03T01:25:28+00:00) Erdus. Retrieved from https://www.scien.cx/2025/09/03/erdus/

MLA

" » Erdus." Tobias | Sciencx - Wednesday September 3, 2025, https://www.scien.cx/2025/09/03/erdus/

HARVARD

Tobias | Sciencx Wednesday September 3, 2025 » Erdus., viewed ,<https://www.scien.cx/2025/09/03/erdus/>

VANCOUVER

Tobias | Sciencx - » Erdus. [Internet]. [Accessed ]. Available from: https://www.scien.cx/2025/09/03/erdus/

CHICAGO

" » Erdus." Tobias | Sciencx - Accessed . https://www.scien.cx/2025/09/03/erdus/

IEEE

" » Erdus." Tobias | Sciencx [Online]. Available: https://www.scien.cx/2025/09/03/erdus/. [Accessed: ]