File viewer
Log File Viewer
Paste logs or drag and drop a log file to inspect severity levels, timestamps, search matches, and filtered output locally in your browser.
Runs Locally
This tool runs in your browser. Files never leave your device.
Drop a .log, .txt, .out, .err, .jsonl, or .ndjson file here.
Lines
7
Visible
7
Matches
0
Size
460 B
Timestamps
7
Severity breakdown
Filtered log viewer
Showing 7 of 7 lines.
1info2026-06-20 14:03:11 INFO server started on port 3000
2warn2026-06-20 14:03:18 WARN cache miss for key=user:1842
3error2026-06-20 14:04:02 ERROR failed to connect to database: timeout after 5000ms
4debug2026-06-20 14:04:09 DEBUG retrying database connection attempt=2
5info2026-06-20 14:04:11 INFO database connection restored
6fatal[2026-06-20T14:05:40.921Z] FATAL worker crashed pid=7784 code=1
7unknown127.0.0.1 - - [20/Jun/2026:14:06:04 -0400] "GET /tools/log-file-viewer HTTP/1.1" 200 4381