ERD-Free

Name: ERD-Free
Author: 김기용

ERD-Free is a free online ER diagram design tool. You can design database schemas visually and export them as SQL.

As of June 2026, ERD-Free has 107 users in the Developer Tools category.

김기용 Developer Tools

Chrome Web Store ↗.crx

Users+161.0%

107

Rating0%

—

— reviews

Reviews0%

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Version

2.0.1

Manifest V3

History

10 snapshots

Tracking since Apr 1, 2026.

View as table

Date	Users	Rating	Reviews	Version
Apr 1, 2026	41	—	—	2.0.1
Apr 11, 2026	53	—	—	2.0.1
Apr 20, 2026	64	—	—	2.0.1
Apr 25, 2026	68	—	—	2.0.1
May 3, 2026	73	—	—	2.0.1
May 9, 2026	71	—	—	2.0.1
May 14, 2026	85	—	—	2.0.1
May 26, 2026	95	—	—	2.0.1
Jun 2, 2026	94	—	—	2.0.1
Jun 8, 2026	102	—	—	2.0.1
Now	107	—	—	2.0.1

Permissions & access

Permissions: storagetabs
Host access: None declared

Screenshots

About

ERD-Free: A Database Design & ER Diagram Tool
This is an ER Diagram program designed to assist with database design. It does not require a separate server login, allowing you to save your work directly to your PC as local files. Additionally, if you are a Supabase user, you can seamlessly integrate the tool with your Supabase database.

I believe that the most effective way to convey your intent when giving tasks to an AI is through a well-defined database structure. ERD-Free can generate outputs in SQL, MD (Markdown), and HTML formats, enabling you to provide the AI with the specific format it needs.

[Key Features]

Table Creation: Easily design and manage database tables.

Relationship Mapping: Supports 1:1, 1:N, and N:M relationship modeling.

Index Management: Create and manage indexes for performance optimization.

Partitioning Support: Design partitioned tables for large-scale data.

Design Organization: Includes "Group" and "Bundle" features to help organize complex designs.

Documentation: Add detailed descriptions to both tables and individual columns.