Log Analyzer
Upload a log file and break it down by level, IP address or time range. The file never leaves your browser.
Upload nowHow it works
Upload the log file
Select a .log or .txt file.
Automatic analysis
Levels, IPs and time range are detected.
Filter & search
Filter individual lines by text or level.
Benefits
Good to know about this tool
Analyzes a log file by line count, log level, IP addresses and time range, with a searchable line view.
Because manually searching large log files for errors or suspicious IPs is tedious.
- Assess error frequency by log level
- Identify unusually frequent IP addresses
- Narrow down the time range of an incident
- Very large files (>100 MB) may affect browser performance
- Avoid opening sensitive log files on untrusted devices
Frequently Asked Questions
Which log formats are recognized?
The tool detects common log levels (FATAL/ERROR/WARN/INFO/DEBUG/TRACE), IPv4 addresses and ISO timestamps via pattern matching — independent of the exact file format.
How many lines are displayed?
The filtered view shows the first 500 matches, but the statistics cover the entire file.
Is my log file transmitted anywhere?
No, the entire analysis happens locally in your browser.
The information, templates, scripts, calculations and recommendations provided are intended for educational and assistance purposes only. Always review and test any generated result before production use. IT Smart Service accepts no liability for misuse, data loss, outages, security incidents, or legal, financial or technical damages arising from incorrect or improper use. Responsibility for validation, testing and deployment decisions rests with the user.
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