Log file syntax highlighting in Notepad++

It’s always a pain to analyze log files using a text editor. The good news is that Notepad++ supports user-defined languages, so I wrote a custom syntax highlighter. This turns Notepad++ into a simple log viewer. I’ve kept it simple: green numbers, grey strings and custom colors for different log levels. But this little bit of color usage is a huge improvement while scrolling through tons of black text. Here’s how you enable it:

  1. Download this XML file
  2. Import the file: LanguageDefine your language...Import
  3. Restart the application.

Files with .log extension automatically use this syntax highlighter, but you can always activate it manually: LanguageLog file.

This configuration was written for Java logging (Log4J, Logback etc.), but it can be easily customized to work with other log patterns. Use the same dialog to adjust the colors and/or keywords, no XML hacking needed.

See also my other syntax files for Notepad++.