Hex Editor GNOME

A precise hex editor for developers and admins to inspect and edit binary files at the byte level with safe export.

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1,120+
Total Calculations Run
< 15ms
Browser Execution Speed
100%
Client-Side Privacy
4.9 / 5.0
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About This Tool

This hex editor provides byte-level editing for binary files. It loads a binary image and presents synchronized hex and ASCII representations, enabling precise modification of data at specified offsets. Users can insert or delete bytes, or replace individual bytes, and all edits are tracked for undo/redo.
Conceptually, the tool treats the file as a continuous byte stream; hex view shows two-digit values per byte; ASCII view shows printable characters; edits modify the underlying stream. Offsets anchor changes, and exported files reflect the updated byte sequence.
Who benefits: software engineers patch firmware, digital forensics analysts examine artifacts, data-recovery specialists reconstruct corrupted files. Unique value: deterministic, reversible edits with full export and backup options, plus support for patch scripts and endianness-aware viewing.
Core features include file load/save, in-place byte editing, optional insert/delete, search/replace, undo/redo, and patch import/export. The tool is designed for reliability with integrity checks and clear change logs.

How to Use

  1. Provide inputs by uploading the binary file to edit and choosing the edit mode.
  2. Locate target bytes using hex or ASCII view and navigation by offset.
  3. Modify bytes by entering hex pairs at a specific offset or apply a prepared patch.
  4. Use undo/redo to verify each change and ensure data integrity.
  5. Save/export the edited file to a new binary image and create a backup of the original.
  6. Optionally export a patch script for batch edits or future reuse.
How to use hex editor gnome

Frequently Asked Questions

Find Quick Answers

What file formats are supported?
Any binary file; the editor does not interpret content beyond its raw bytes and does not require a specific format.
Can I undo changes?
Yes. The editor maintains an undo/redo history for byte-level edits. History length is memory-bound and may be cleared on large file operations.
Will edits overwrite the original file?
Edits are written to a new output file by default, leaving the original unchanged. Create backups or explicitly replace the source if desired.
Is there a size limit or performance concern?
Performance depends on available memory and system resources. Very large binary files may require streaming or chunked processing to avoid exhaustion.

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