Online Documentation for SQL Manager for PostgreSQL
Editing as Hexadecimal
The Hexadecimal tab allows you to view/edit the BLOB data as hexadecimal.
The toolbar provides additional functionality for BLOB Viewer/Editor: use the Save to file and the Load from file toolbar buttons to save the hexadecimal data to a file, or load data from a file.
Use the Ins key to switch between the Insert and Overwrite modes.