Question 1

Is this log viewer free?

Accepted Answer

Yes, completely free. Open, search and filter any log file in your browser with no signup or limits.

Question 2

Are my log files uploaded anywhere?

Accepted Answer

No. Log files are processed entirely in your browser. Nothing is sent to any server, keeping your logs private.

Question 3

What log levels are highlighted?

Accepted Answer

The viewer automatically highlights ERROR (red), WARN (yellow), INFO (blue), DEBUG and TRACE (gray), and FATAL levels with color-coded backgrounds and borders.

Question 4

Can I search with regex?

Accepted Answer

Yes. The search box supports plain text and regular expressions. Toggle log levels on or off to filter what you see.