# dbdiagramr

dbdiagramr is a free, open-source web tool that generates interactive entity-relationship (ER) diagrams from any PostgreSQL connection string. No signup, no setup - paste your connection string and visualize your database schema in under 10 seconds.

## Key pages

- Home: https://www.dbdiagramr.space
- Visualize your database: https://www.dbdiagramr.space/visualize
- Schema diagram library: https://www.dbdiagramr.space/schema
- Blog (PostgreSQL guides): https://www.dbdiagramr.space/blog
- Comparisons: https://www.dbdiagramr.space/alternatives
- Supabase RLS check: https://www.dbdiagramr.space/supabase-rls-check
- Pricing: https://www.dbdiagramr.space/pricing
- Pricing (machine-readable): https://www.dbdiagramr.space/pricing.md
- Full context: https://www.dbdiagramr.space/llms-full.txt
- Features: https://www.dbdiagramr.space#features
- How it works: https://www.dbdiagramr.space#guide

## Schema diagram library

Reference ER diagrams of popular PostgreSQL schemas, each showing every table, column, primary key, and foreign key relationship:

- Supabase auth schema (7 tables): https://www.dbdiagramr.space/schema/supabase
- NextAuth.js / Auth.js schema (4 tables): https://www.dbdiagramr.space/schema/nextauth
- Better Auth schema (4 tables): https://www.dbdiagramr.space/schema/better-auth
- Laravel 11 default schema (7 tables): https://www.dbdiagramr.space/schema/laravel
- Django auth schema (9 tables): https://www.dbdiagramr.space/schema/django
- Stripe billing schema (9 tables): https://www.dbdiagramr.space/schema/stripe
- E-commerce schema (11 tables): https://www.dbdiagramr.space/schema/ecommerce

## Pricing

- Free: $0 - unlimited diagrams, live PostgreSQL introspection, per-table RLS status, paste-SQL mode, SVG and PNG export, no signup
- Pro: in development - no price and no checkout. Planned: schema checks on private-repo pull requests, lint rules for risky migrations, sticky PR comments

## About

- Open source under the MIT licence: https://github.com/VarunKvK/dbdiagramr
- Contact and updates on X: https://x.com/im_daedalus
- Free with no diagram limit and no account
- Generates interactive entity-relationship diagrams from live PostgreSQL schemas
- Renders on an interactive canvas with pan, zoom, and hover-to-trace table relationships
- Exports diagrams as SVG or PNG
- Shows per-table Row Level Security status on live connections (public schema)
- Works with cloud databases: Supabase, Neon, Railway
- Supports the Session pooler (5432) and Transaction pooler (6543)
- Paste-SQL mode parses in the browser; live connection strings are sent to the dbdiagramr backend for one request, then discarded
- Connection strings and schemas are never stored
- Built with Next.js, PostgreSQL, and Tailwind CSS
- Last updated: 2026-10-23