DeltaHexEditor - plugin detail

Basic hexadecimal plugin for viewing and editing binary files in hexadecimal and textual dump form.

NetBeans Plugin - DeltaHexEditor
Plugin owner: HajdaMCZ
Added: 2016-06-08
License: CDDL, Apache License 2.0
Category: Editing
Downloaded: 427 times
 4.23, by 1 users

Plugin Log Show log

Versions available

Download plugin   Download size: 0.14 MB   Last Update: 2017-03-22

This plugin is also available on the NetBeans Plugin Portal Update Center. Use 'Tools > Plugins' action from the NetBeans IDE main menu for convenient installation of this plugin

What's new in this version

- Added options panel / dialog
- Added values side panel
- Added "File/Open File as Hex" action
- Code colorization by byte value
- Some minor fixes

Verifications for NetBeans versions

8.2 verification PASSED See verification details
Download plugin   Download size: 0.13 MB   Last Update: 2017-03-22

What's new in this version

- Added options panel / dialog
- Added values side panel
- Added "File/Open File as Hex" action
- Code colorization by byte value
- Some minor fixes

Verifications for NetBeans versions

Plugin is not subject to any verification


Hexadecimal editor based on deltahex library. Use "Open as Hex" action in main "File" menu or in project files context menu. Click on image under plugin detail to see it in action.


  • Data as hexadecimal codes and text preview
  • Insert and overwrite edit modes
  • Support for selection and clipboard actions
  • Support for undo/redo
  • Support for encoding selection
  • Support for showing unprintable/whitespace characters
  • Codes can be also binary, octal or decimal
  • Searching for text / hexadecimal code with matching highlighting
  • Delta mode - Changes are stored only in memory till save
  • Support for huge files

Known Issues

  • Editor can freeze with OutOfMemoryError: Java heap space if there is too many big modifications
  • In delta mode files can be corrupted, if they are changed with other applications at the same time
  • Memory leaks

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User Comments


Accessing the plug-in

Right click does work … Idiot Me! I got 99% of the way there and had a cerebral hemorrhage. CodeLurker is correct in that I just dropped a binary into my src dir and tried to open from the File menu, never thinking to try right clicking on it. I'm an old dog trying to learn new tricks. Retired from firmware engineering (C/C++) years ago and decided recently to teach myself Java and see if I could do some application things for myself and it's interesting. I agree with CodeLurker that your plug-in looks very helpful HajdaMCZ, and thanks to both of you for your help.
Posted by gbrewer2614 on Feb 12, 2017

How to run it

I edited introduction. I hope it's more understandable now.
Posted by HajdaMCZ on Feb 11, 2017

How to run it

The first time I tried it, it worked. I just so happened to right-click on a file in a project tree. Thus, it appears you must have created a project and added the file you want to edit to it, in order to use it. It would be helpful if there were a more direct method; but from what I can tell of it so far, it appears quite nice. It even edits in octal and binary. It also allows you to set one of a large palette of character encodings.
Posted by CodeLurker on Feb 10, 2017

I installed DeltaHexEditor but I don't see how to run it

I installed DeltaHexEditor. The Netbeans IDE (8.2) Plugins/Installed tab now shows it there and checked active, but I've seen no means to use it.
The comment under "Introduction" says "Use "Open as Hex" context menu item to edit files in projects." I assume that means I should see an "Open as Hex" item in the list of options under the 'File' menu on the IDE but I do not. Am I misunderstanding your instructions or is there something wrong? This is the first time I have tried to install and use a plugin so the possibility that I am doing something wrong is high.
Posted by gbrewer2614 on Feb 07, 2017
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