Which SQL dialects are supported?

Common CREATE TABLE syntax with inline PRIMARY KEY and FOREIGN KEY REFERENCES clauses. Complex dialect features may need simplification.

Does it connect to my database?

No. Paste DDL text only — nothing is sent to a server.

ER Diagram Generator

Paste CREATE TABLE DDL and export an entity-relationship SVG

About this tool

Turn CREATE TABLE DDL into ER diagrams with FK lines. Free browser tool — paste SQL, export SVG. ER Diagram Generator runs in the browser on DevTools. There is no signup, and your input stays on this device unless the tool explicitly performs a live network lookup.

What this tool does not do

ER Diagram Generator is a free in-browser utility, not a hosted API. It does not keep server-side history and is not a substitute for production verification in your own stack.

How do I use this tool?

How do I use ER Diagram Generator?
Open ER Diagram Generator, enter or paste your input, and copy the result. The page works without an account.

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AWS/Azure/GCP architecture diagrams, ER from DDL, Kubernetes resource calculator, AWS pricing estimates, TLS handshake tutorial, webhook tester and DevTools symmetric encryption.