SQL to ER Diagram

A free, open-source online ERD generator. Paste a SQL schema (CREATE TABLE statements) → get a clean, interactive entity-relationship diagram. 100% local · no signup · no upload. It runs entirely in your browser, so your schema never leaves your machine — no server, no backend. Live at sqltoerdiagram.com. Every other SQL-diagram tool is either paywalled, ugly, or slow. SQL to ER Diagram is a single static page that stays smooth at hundreds of tables, edits your SQL two-way, and shares a whole diagram in a single link — with no account and nothing leaving your browser. SQL to ER Diagram is the open-source project royalbhati/sqltoerdiagram (https://github.com/royalbhati/sqltoerdiagram) by royalbhati, released under MIT. Ion packages it unmodified from commit ae4e7012fe9f, adding only a manifest, an icon and a storage compatibility script.

Written by royalbhati, published to Oikou by Ben Grande.

• ★ 648 stars on GitHub
• Licence: MIT
• Built from commit ae4e7012fe9f

View the repository on GitHub

Not rated. Nobody has said who this app is suitable for, so Personal Clouds and the Oikou app treat it as 18+.

Internet

It asks to reach nothing on the internet.

Personal Cloud tools

• Keep a database of its own on your Personal Cloud ion.db

Notifications

It does not send push notifications.

Storage

Up to 256 MB on your Personal Cloud.

Sign in to add this web app to a Personal Cloud of yours. It runs there, on your own computer, and you open it from there; nothing is installed on your phone.

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