SQL to ER Diagram Converter

Paste SQL CREATE TABLE statements and instantly generate clean, interactive Entity-Relationship Diagrams in your browser. No data uploads, no backend needed — perfect for developers documenting databases or learning database design.

Database documentation tooling has quietly become a priority as engineering teams scale and compliance requirements (SOC 2, GDPR audits) demand clearer data architecture records, making a fast, no-friction diagramming tool genuinely useful right now. DbDiagram.io is the closest incumbent and handles this exact use case reasonably well, which is the central problem — it's free, well-known, and already bookmarked by most developers who'd reach for this tool. The $500–3k/mo revenue band is realistic only if there's a paid hook like export formats, team sharing, or embedded diagrams, since a purely free browser tool generates nothing. The most likely failure mode is that DbDiagram.io's free tier absorbs all demand and there's no defensible wedge to make users pay.