Error Pattern Checker
Find log lines that match a pattern: plain text or regex. Get matching lines with line numbers.
About this tool
Paste log or text, enter a pattern (plain substring or regular expression). Matching lines are listed with line numbers. Use "Regex" for regular expressions; "Case sensitive" for exact case match.
For full log management, use a dedicated service.
Search intent cluster
- Log Analysis
- Error Detection
- Pattern Matching
- Log Monitoring
- Debugging Tools
Entity keywords
error checkerlog analysisregex matcherpattern finderline number extractorlog monitoringdebuggingtext pattern
How to use this tool
- Input your log data into the tool.
- Enter the pattern you want to search for, using plain text or regex.
- Run the checker to view matching lines and their respective line numbers.
What this check helps you catch
- Find specific error patterns
- Extract line numbers
- Support for regex
- Highlight matching lines
- Filter by log type
FAQ
- What does Error Pattern Checker check?
- Error Pattern Checker checks input validity, structure, and common implementation issues so you can catch errors before deployment.
- Can I use Error Pattern Checker in CI or QA workflows?
- Yes. Use it during QA or pre-release checks to reduce runtime failures caused by invalid data.
- Does this tool store my data?
- No persistent storage is required for normal validation flow unless you explicitly save reports.