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Open Log Viewer

Open Log Viewer

A multi-platform log viewer built with Electron and styled with Material Design

Open Log Viewer
Open Log Viewer

A multi-platform log viewer built with Electron and styled with Material Design.

Key FeaturesInstallationDownloadRelease NotesCreditsLicense


Key Features

  • Multiple opened files in tabs.
  • Tail file changes.
  • Filter log levels.
  • Colored log entries.
  • Customize log levels pattern.
  • Customize log levels color.
  • Cross platform
    • Windows, macOS and Linux ready.


# Clone this repository
$ git clone

# Go into the repository
$ cd open-log-viewer

# Install dependencies
$ npm install

# Build app
$ npm run build

# Run the app
$ npm run start


Open Log Viewer is available for Linux, Mac and Windows

macOS Windows Linux
Download Download Debian-based

Release Notes

Version 1.5.1

Bugs Fixed

  • Now macOS users can copy/paste using shortcuts

Version 1.5.0


  • Automatic scrolling to the last log entry while new entries are append.
  • Added -f/--file arguments to open a log file from the terminal.

Version 1.4.2

Bugs Fixed

  • New lines are append to the end of editor instead of cursor position.

Version 1.4.1

Bugs Fixed

  • When a line starts with more than 4 spaces the line is whited.

Version 1.4.0


  • Update to Electron 8 and the rest of dependencies.

Version 1.3.0


  • Now you can use valid Java Script regular expressions when you specify a pattern for a log severity.

Bugs Fixed

  • A button to close the about dialog should appear for linux and mac.

Version 1.2.1


Version 1.2.0


  • Added font size setting.
  • Restart app when change a log pattern.

Bugs Fixed

  • Reset settings when click on cancel button.

Version 1.1.2

Bugs Fixed

  • When there are more than one file opened then files with no line matches has the previous severity color.

Version 1.1.1

Bugs Fixed

  • If the first line does not match any log severity pattern, then the viewer was empty.

Version 1.1.0


  • Enabled search feature. Press Ctrl+F or Command+F to find words or text in the log file.
  • Show line numbers.


  • Color and patterns settings are global instead of by file.
  • Changes on patterns are applied after restarting the application.
  • Color and pattern settings are not migrated to this version, so you will lost them.


This software uses the following open source packages:


This project is licensed under the GPLv3 License - see the LICENSE file for details

Tomás Moreno Bernal  ·  GitHub @tmoreno  ·  Twitter @tmorenobernal


Something missing? Edit this app.

Keyboard Shortcuts

Key Action
/ Focus the search bar
Esc Focus the search bar and cleans it
Select the next search result
Select the previous search result
Enter Open the selected search result
cmdEnter Ctrl+Enter Open the selected search result in a new tab