Where can i find the ER Diagram file?

Apply OS: Windows, macOS, Linux

Apply Navicat Product: Navicat for MySQL, Navicat for PostgreSQL, Navicat for Oracle, Navicat for SQL Server, Navicat for SQLite, Navicat for MariaDB, Navicat Premium

Apply Navicat Version No.  Version 10.0 or above

Navicat will save the ER Diagram in a .ned file under Settings Save Path/Settings Location. To look for the path, right-click/control-click your connection and choose Connection Properties/Edit Connection > Advanced tab.