FREE TOOL
SQL to ER Diagram Generator
Paste SQL here - connect GitHub when you want Moxie to keep data-model docs accurate.
Live Mermaid ER preview, SVG/PNG export, and shareable links in your browser. Optional AI docs for a full data-model writeup. No account needed for the diagram.
Prefer hand-written Mermaid? Open the live diagram editorPaste SQL to generate an ER diagram.
Tired of redrawing ER diagrams after every migration? Export free above · connect a repo when you want Moxie to keep it accurate
Paste Postgres, MySQL, or SQLite CREATE TABLE statements and get a Mermaid erDiagram with relationships and keys.
Download clean SVG or PNG for docs and slides, or copy Mermaid into a README. Shareable links too.
Optional: turn the same schema into Markdown documentation - overview, tables, and relationships.
SQL parsing and diagram rendering run in your browser. Schema never leaves your device unless you ask for AI docs.
Common uses
Drop migration SQL into a shareable ER diagram for PRs and architecture reviews.
Export SVG or paste Mermaid into docs so the schema is visible without a DB client.
Use Document with AI for a Markdown writeup of tables and relationships.
Share a link with SQL and Mermaid encoded in the URL - no accounts, no uploads.
Frequently asked questions
Yes. Paste SQL, preview the ER diagram, export SVG/PNG, and share links with no account. Generating AI data model docs asks for an email once so we can keep the tool abuse-free.
Common CREATE TABLE syntax from Postgres, MySQL, and SQLite - including PRIMARY KEY, FOREIGN KEY, REFERENCES, UNIQUE, and NOT NULL. Complex migrations or vendor-only types may need a quick Mermaid edit.
Diagram generation is fully client-side. Only when you choose Document with AI do we send a schema summary to generate Markdown docs - and we do not store your SQL dump.
Yes. Switch to the Mermaid tab to tweak relationships or labels. Edits stick until you change the SQL again. Shareable links include your overrides.
This tool focuses on pasting real CREATE TABLE SQL, Mermaid output you can commit to docs, private in-browser rendering, and a path into living architecture docs from GitHub when you connect a repo.
A one-off ER diagram drifts the moment migrations land. Moxie Docs connects to your repository and keeps architecture and data-model docs current on every merge - with reviewable Cleanup PRs.
Tired of redrawing ER diagrams after every migration?
Generate a diagram from SQL here. Connect GitHub when you want Moxie to keep architecture and data-model docs accurate as the schema changes - with reviewable Cleanup PRs every Friday.
Export free above · connect a repo when you want Moxie to keep it accurate