FlexHex Editor Feature List

FlexHEX Editor is a full-featured 32-bit hex and disk editor designed to edit binary files, OLE compound files, logical devices, and physical drives. With FlexHEX you can inspect, modify, insert, search, or replace binary, ASCII, or UNICODE data. In addition to the powerful editing functions, FlexHEX includes an unlimited Undo/Redo feature, so you are never at risk of losing your data because of a typing error.

Viewing and Editing Any Binary Files

Opens and edits files up to 8 exabytes long (i.e. eight quintillion bytes)
Any binary formats
NTFS multi-stream files
NTFS sparse files
OLE compound files
Files locked by the system or by another application
Logical disks
Hard disks
Flash cards and other types of physical drives
Multiple files can be opened at the same time

When a competitor claims their product can edit "huge files", in many cases this means 4Gb or sometimes even less. Not so with FlexHEX. By huge file we mean a genuine large file, up to eight exabytes long, a theoretical limit of an NTFS volume using 4K cluster size.

In many current usage scenarios, a 4 GB file-size limitation is unacceptably small. For example, 4 Gb is the file size for approximately 18 minutes of video downloaded from a digital video recorder. With FlexHex, this is no longer a problem. Simply put, no matter how large your file is, FlexHEX handles it. Read more...

Supported Data Types

Main edit window: Hex bytes, ANSI/MBCS text, UNICODE text
Hex bytes, words, doublewords, and quadwords
Unsigned and signed decimal, bytes, shorts, integers, and 64-bit integers
ANSI/MBCS and UNICODE strings
64-bit FILETIME values
64-bit floating point-based DATE type
32-bit time_t type
32-bit RGB values with alpha component
GUIDs (Globally Unique Identifiers)
Support for big-endian byte order

User-Defined Data Types

Structures, named and anonymous
Unions, named and anonymous
Named and anonymous bit structures for accessing bit-based fields
Fixed- and variable-size arrays
Fixed-size, variable-size, or zero-terminated ANSI and UNICODE strings
C-style enumerations
Special unused, align address, and align offset directives
User-defined types may be anchored to address (fixed), data (sticky), or to the input caret (floating)

The User-Defined Data Field is a file area to which the user assigned a type and, optionally, a name. If we talk about a program, we would call that object a variable, but for a static file this term does not seem proper.

Although we still can change a data field value by typing new data in the FlexHEX edit window, the Edit Data Field command provides a more convenient way. The Data Field pane lists all defined data fields and lets you navigate them quickly.

Basic Editing

In-place hex, string, and UNICODE editing
Editing memory area as typed data
Data and objects Quick Viewer feature
Multilevel Undo and Redo, browsable Undo list
Modified area tracking
Multi-format data insert, including repetitive patterns
Sparse data block insert
Bitwise operations NOT, AND, OR, and XOR on the selected block
Arithmetic operations: negation, addition, substraction, multiplication, division, and remainder
Group arithmetic and logical shifts and bit rotates of the selected items
Data field definition and editing
Import and export of binary data, or just drag-and-drop them to/from another applications
Multi-format CSV (comma-separated values) import and export

Clipboard and Drag-and-Drop

Drag-and-drop files onto FlexHex for quick editing
Support for binary data and file copy/paste/drag-and-drop
ASCII, multi-byte (MBCS), and UNICODE data formats
Automatic binary-ASCII, binary-UNICODE, and ASCII-UNICODE conversion
Unlimited copy/paste and drag-and-drop size
Inter-application (including the Windows Explorer) copy/paste/drag-and-drop

Search, Replace, Comparison Tools

Multi-format Search feature
Multi-format Find All command
Multi-format Replace / Replace All commands
Multi-Search — single-pass search for multiple patterns
Scan for ANSI/MBCS or UNICODE strings
Scan for known GUIDs (COM class and interface IDs)
Pattern coloring option (pattern autoload supported)
Compare with a file, an alternate stream, a logical or a physical drive
Partial stream compare
Comparison maps provide a user-friendly representation of the comparison result

The Comparison Map shows the positions of the blocks in the files being compared, and how they correspond. Left-click a file in the map to jump to the corresponding position. Right-clicking displays the comparision map menu.

You can compare files in whole or partially. If you wish to compare only parts of the files, check the Block Comparison box and enter the starting offsets and sizes of the blocks to be compared. Leave the offset field empty to compare starting from the lowest address; leave the size field empty to specify the rest of the file.

Navigation

Bookmarks in the Visual Studio style
Direct browsing using Navigation Panes: Streams, Area, Bookmarks, Found Data, and Compare
Direct browsing using Data Panes: Data Fields, ANSI/MBCS/UNICODE Strings, CLSIDs, and IIDs
Address/offset jumps
Unlimited jump history

Other Neat Things

File / Selected area printing
CRC-32, MD5, SHA-1, SHA-256 checksums
Cryptographically strong AES-based random number generator
Browsing of registered COM classes
Advanced calculator supporting binary and text drag-and drop
Customizable user tools menu
Fully customizable layout and colors
Byte order autoselection
Visual Studio-like customizable user interface including toolbars, menus, and keyboard shortcuts
Windows Explorer integration
Command-line interface
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