Paste your SQL, get an entity relationship diagram
Paste CREATE TABLE statements from Postgres, MySQL or SQLite and Planloom draws one box per table with its key columns and one arrow per foreign key. Then open it as an editable canvas to rearrange, annotate and share. It runs in your browser, so your schema is not uploaded.
Try it now
Reads CREATE TABLE and ALTER TABLE foreign keys (Postgres, MySQL, SQLite). It runs in your browser; your SQL is not uploaded.
Rendering preview…
What you get
Foreign keys become arrows
Inline REFERENCES, table-level FOREIGN KEY and pg_dump style ALTER TABLE statements are all read.
Editable, not an image
The result is real shapes and connectors on a collaborative canvas, ready to restyle and discuss.
Private by design
Parsing happens in your browser. Nothing is sent to a server or to AI.
Honest about limits
Anything it cannot read is skipped and listed, never guessed. Wide tables show their first columns and a count of the rest.
How it works
- 1Paste your CREATE TABLE statements.
- 2Check the live preview and any skipped items.
- 3Open it as an editable canvas and share the board.
Questions
Which SQL does it read?
CREATE TABLE, including inline and table-level primary and foreign keys, and ALTER TABLE ADD FOREIGN KEY, in common Postgres, MySQL and SQLite syntax.
Does it connect to my database?
No. You paste SQL text. It never connects to a database and does not upload your schema.
How many tables can it draw?
Up to 40 tables per diagram. Split larger schemas by area.
Does it show every column?
It shows the first columns of each table and a count of the rest, with primary keys marked, to keep the diagram readable.
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