Amazing free Hex Editor and Disk Editor for editing hexadecimal code

HxD Hex Editor

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Download HxD Hex Editor 2.5.0

  -  3.29 MB  -  Freeware

What's new in this version:

- Hex editor: implement horizontal mouse wheel scrolling (including handling of Logitech driver bug)

Data inspector:
- New: added LEB128/ULEB128 types (variable width integer types used in WASM and dwarf debug information)
- New: introduce readonly type converters (to allow uniform error messages when attempting to change values, also for converter plugins)
- Enhancement: better error handling so that typical errors are caught and a more specific error message is given
- error message for plugin DLLs of wrong machine type (x86-32 vs. x86-64)

- New: skip undefined or unreadable sections, such that Intel Hex and S-Record files can be created that have gaps
- New: source code exporter option to set the maximum text column or bytes per lines (= array elements per line)
- New: SRecord and IntelHex exporters can now have maximum of 250 and 255 bytes per line, respectively
- therefore there is also a new default block size/bytes per line setting for each of the exporters, which have a more common size of 32 (for both)
- allows user to select very large block sizes, yet default to a commonly used size

- New: Intel Hex and S-Record support undefined regions of arbitrary size, by creating undefined foldable regions, instead of creating zero filled blocks for them
- Enhancement: rewrite logic to allow for data records that are out of order (addresses aren’t strictly increasing), or overlapping, even when there are gaps of undefined data; previously this could lead to errors, or would only function without undefined data gaps
- Enhancement: Intel Hex and S-Record importers ignore leading and trailing whitespace in a line

Checksums / digests:
- New: custom checksum
- can generate a checksum, with settable bitwidth for the checksum result, the checksum addends, and the endianness
- useful for various exotic formats, such as ROM files

Search window:
- Enhancement: added support for (U)Int24
- use same code as datainspector to convert from string to integer
- improved the naming of floating point and integer types (closer to data inspector)
- searches for both signed and unsigned integers, choosing the right type depending on which fits best (negative numbers => negative type, positive numbers => unsigned type; this is ok, because the positive numbers in the signed type have the same encoding as in the unsigned type; this is a feature of two’s complement encoding of integers)

Tool windows:
- New: menu items and shortcuts to activate and cycle through tool windows
- activates (and shows when hidden) either of: data inspector, checksums, or search results
- implements MRU logic for activation (like Alt+Tab in Windows)
- can be canceled (and originally activated tool window will be restored)
- can handle dockable panels, pagecontrols, and childs of those to handle and keep track of activation
- properly handles switching between back and forward cycling, by switching from Alt+F7 to Alt+Shift+F7, and interrupting cycling when pressing another shortcut
- extended shortcut handling of VCL/Delphi to handle repeated uses of two shortcuts as part of a shortcut sequence, to properly implement MRU handling, and canceling sequencing (which restores the originally activated tool window), or committing the last chosen tool window, as the activated one
- Global shortcut key Esc to focus editor window

- do not delete then insert data in pmOverwrite mode, instead, only overwrite
- also ensure selection/caret is restored, and therefore always begin a group if selection is available
- Extensive work to support undefined sections in hex editor that can be deleted, or overwritten, all with undo capability; concerned a lot of supporting internal data structures/algorithms
- allows for support in importing and exporting files with gaps (=undefined sections)
- allows for round-trip handling of Intel Hex or S-Record files

- Data type converters only store their friendly type names in the settings/INI file, when the user changes them
- this allows for updating those names from version to version, and having them appear automatically without resetting the data inspector in the options
- also useful for translating HxD, which read the names from the settings when not resetting them, making it appear the translation is not complete
- Fix: entering positive numbers for (U)Int64 results in an out of range error message
- Fix: Search window: “any” bitwidth does not accept positive integers >= 2^63 (since it was limited to signed numbers only, now supports unsigned ones, too)
- Fix: HxD would sometimes not detect it was installed (and not in portable mode), because of a case sensitive path comparison
- Fix: access violation when deleting sections (sections were fixed before, so this bug never triggered)
- Fix: custom checksum computation uses wrong step size to advance in the byte stream it processes; it would advance in steps of the final checksum’s bitwidths, instead of the addend’s bitwidth
- Fix: when overwriting one nibble (key press in hex column) in unaccessible data, set the other nibble to 0 automatically
- Fix: dockable panels could change fonts in docked and undocked/floating modes
- Fix: several type and pointer shorting issues, due to types not compatible with x64; they would cause hard to track bugs in the x64 version of HxD under certain versions/configurations of Win 10 (ensuring everything is allocated in memory above 4GiB, during testing, allowed to track them down)
- issues were in some own code, some third party code, and some Delphi RTL code (TRttiContext, TValue.Make)
- Various other small enhancements and minor fixes

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