# HexViewer (open-source developer tool)

> HexViewer is a free, open-source developer tool for Android. Hexadecimal viewer for Android. It has 237 GitHub stars and is released under the GPL-3.0-or-later license, and you can install it from F-Droid.

This application offers the following features : - Opening all files without a corresponding Android application (1). - Display of the file in hexadecimal (or plain text) with the possibility to modify the content (in hexadecimal only). - Saving the file on the smartphone/tablet (2). - Search option in the open file (hexadecimal and plain text modes). (1) At first, the file can only be saved via "save as" and due to Android permissions reasons, the only way to make it appear in the list of recent files is to reopen it. (2) Due to file permissions, after a "save as", the list of recent files cannot be updated with the new file location.

## Key facts

| Fact | Value |
|---|---|
| Repository | https://github.com/Keidan/HexViewer |
| Platforms | Android |
| Built with | Java |
| GitHub stars | 237 |
| License | GPL-3.0-or-later (open source) |
| F-Droid | https://f-droid.org/packages/fr.ralala.hexviewer/ (package fr.ralala.hexviewer) |
| F-Droid anti-features | none flagged |
| Google Play | not linked |
| App Store | not linked |
| Website | none listed |
| Official | no |
| Category | Developer & terminal tools |
| Latest release | v1.59.10 (Oct 4, 2026) |
| Last commit | Oct 4, 2026 |

F-Droid builds its apps from source and flags anti-features: https://f-droid.org/en/docs/Anti-Features/

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