ERD-Free is a free online ER diagram design tool. You can design database schemas visually and export them as SQL.
Users
239
+24 in 30 days
Rating
0.0 / 5
unchanged in 30 days
Ratings
0
0 in 30 days
Store rank
#59K
#50K among extensions
Version
2.0.4
updated 14 Oct 2026
Users
monthly, 8 months
Latest, 15 Oct 2026:239 usersMove the mouse over the chart for any month
Ratings count
monthly, 8 months
Latest, 15 Oct 2026:0 ratingsMove the mouse over the chart for any month
The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.
About ERD-Free
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.
Growth
Window
Users
Change
Ratings
Rating
7 days
−2
−0.8%
0
0.00
30 days
+24
+11.2%
0
0.00
6 months
+172
+256.7%
0
0.00
Chrome Web Store search rankings
Where ERD-Free appears when people search the store, with the 30 day change