Log Viewer
Log Viewer
View and search structured log files (JSON Lines, Apache/Nginx access logs); highlight log levels and filter entries by time range, severity, or keyword; use regex search for advanced pattern matching.
Drop a log or CSV file here or click to browse
Supports .log, .txt, .csv, .tsv · Auto-detects format
Log Viewer
View and search structured log files (JSON Lines, Apache/Nginx access logs); highlight log levels and filter entries by time range, severity, or keyword; use regex search for advanced pattern matching.
Common uses
- View JSON Lines logs with severity filtering
- Search an Nginx access log for 5xx errors
- Filter log lines matching a regex pattern
Frequently asked questions
Can I use Log Viewer to view JSON Lines logs with severity filtering?
Yes. Log Viewer can view JSON Lines logs with severity filtering, directly in your browser.
Can I use Log Viewer to search an Nginx access log for 5xx errors?
Yes. Log Viewer can search an Nginx access log for 5xx errors, directly in your browser.
Can I use Log Viewer to filter log lines matching a regex pattern?
Yes. Log Viewer can filter log lines matching a regex pattern, directly in your browser.
Is my data uploaded to a server?
No. This tool runs entirely in your browser — your input is processed locally on your device and is never uploaded or stored on a server.