Open-source ER diagram generator turns CREATE TABLE SQL into interactive ERDs in your browser
tom_doerr · x · 2026-09-04
GitHub trending project sqltoerdiagram (588 stars): paste CREATE TABLE statements and get a clean, interactive entity-relationship diagram.
- Supports standard DDL across PostgreSQL, MySQL, SQLite, SQL Server and Snowflake
- Runs 100% locally in the browser — no signup, no upload, schema never leaves your machine
- Canvas renderer with cached bitmaps and viewport culling stays smooth at hundreds of tables (120fps while zooming)
- Two-way SQL editing, and a whole diagram can be shared via a single link
The author built it because existing SQL diagram tools are paywalled, ugly, or slow.
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