Free Hex Editor Neo Features

No Size Limit!

Hex Editor does not force any limit on file's size. Any file supported by the underlying file system (FAT, FAT32 or NTFS) is supported.

See the Opening Documents section for more information.

Basic File Editing

Basic file editing include writing to file (direct file modification), inserting data to a file, deleting data from a file, inserting another file, working with clipboard, positioning within a file, changing file's size, filling file's data.

Find

The Find command is used to locate specific pattern in a file. The Find Dialog is used to specify the pattern to search for, as well as a number of additional options.

When the pattern is found, the cursor is moved to the beginning of located pattern. To continue searching, execute the Find » Find Next or Find » Find Previous commands.

See the Find section for more information.

Replace

The Replace command is used to locate a specific pattern in a file and replace it with another pattern. The Find & Replace Dialog is used to specify both patterns, as well as a number of additional options. It is not required that the size of the search and replace patterns equals, in addition, the replace pattern may be empty. In the latter case, found pattern occurrences are removed from the document.

When you press the Replace button for the first time, Hex Editor starts searching for a pattern. When pattern is located, the cursor is moved to the beginning of the pattern and a Find & Replace Dialog is displayed again. Now you have a choice of pressing Find Next button to skip this match and search for another, or Replace button to replace this match and continue searching.

The direction of the next search is governed by the "Search up" or "Search down" option.

When there are no more matches, the message box is displayed.

See the Replace section for more information.

Unlimited Undo and Redo

Hex Editor provides support for an unlimited number of operations in document's operation history. To browse through the operations in the history, use the Undo or Redo commands, as well as a special History Tool Window (see below).

See the Operation History Overview section for more information.

Operation History Saving & Loading

The entire operation history may be compressed and saved to a disk file. It then may be loaded and applied to the same document, effectively restoring all states and branches.

See the Working with History section for more information.

Customizable Editor Color Schemes

You can customize the every visible aspect of the editor window, that is, the font and colors of each window element may be customized. For convenience, these customizations may be saved as a scheme. Hex Editor also provides a number of professionally designed color schemes that you may use to improve your productivity.

See the Layout and Color Schemes section for more information.

Patch Creation

A patch is a difference between two states of a document. In most cases the size of this difference is much smaller than the size of the file itself. Hex Editor supports creating a special patch file, which contains all modifications made to an opened document. The patch can subsequently be distributed and applied to the same file resulting in the same modifications being made to a file.

Hex Editor does not support applying patches in its framework. Instead, the separate application, PatchApply.exe is provided for this purpose. Alternatively, Patch API provides several other methods of applying patches.

See the Creating Patches section for more information.

Different View Types

Any editor window may be configured to display data in one of the following view type:

View Type	Cell Size	Encoding
Hex Bytes	1 byte	0x00 to 0xFF unsigned byte-size integer, displayed in hexadecimal
Decimal Bytes	1 byte	0 to 255 (0 to 28-1) unsigned byte-size integer, displayed in decimal
Hex Words	2 bytes	0x0000 to 0xFFFF unsigned word-size integer, displayed in hexadecimal
Decimal Words	2 bytes	0 to 65,535 (0 to 216-1) unsigned words-size integer, displayed in decimal
Hex Double Words	4 bytes	0x00000000 to 0xFFFFFFFF unsigned double word-size integer, displayed in hexadecimal
Decimal Double Words	4 bytes	0 to 4,294,967,295 (0 to 232-1) unsigned double word-size integer, displayed in decimal
Hex Quad Words	8 bytes	0x0000000000000000 to 0xFFFFFFFFFFFFFFFF unsigned quad word-size integer, displayed in hexadecimal
Decimal Quad Words	8 bytes	0 to 18,446,744,073,709,551,615 (0 to 264-1) unsigned quad word-size integer, displayed in decimal
Float	4 bytes	Single-precision floating-point number (IEEE 754)
Double	8 bytes	Double-precision floating-point number (IEEE 754)

See the View Types section for more information.

Customizable User Interface

Hex Editor is a highly customizable application. You can customize almost every feature or module. You can customize toolbars, keyboard shortcuts, the placement, layout and color schemes of editor windows, a list of directories that are used to search for included files and an associations between a structure scheme and file extension.

In addition, most interface dialogs, especially those that encapsulate a Pattern Dialog, allow you to change their size. The size is then saved and restored next time you use this dialog. Most dialog's fields also store the values you entered into them and provide you with a list of last recently used values.

See the Customization Overview section for more information.

Automatic Updates

Hex Editor can be configured to automatically check for released updates, display a list of changes, download and install updates (by your request).

File Attributes Tool Window

The Attributes Tool Window displays the current file's attributes. It also allows you to modify the state of some attributes.

See the Attributes Tool Window section for more information.