#430 · Developer & Config Text Tool

Stack Trace Cleaner

Clean long stack traces by extracting the exception type, root cause, application frames, and before/after frame counts. Designed for bug reports, support tickets, and faster debugging.

Text Input

Trace cleaner
regex

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How to use this text tool

  1. Paste text or upload a TXT/CSV file.
  2. Choose the processing mode and optional settings.
  3. Click the main button or enable live processing.
  4. Copy or download the processed result.

What this tool does

Clean long stack traces by extracting the exception type, root cause, application frames, and before/after frame counts. Designed for bug reports, support tickets, and faster debugging.

Parses lines, detects timestamps, severity keywords, exception patterns, duplicated messages, and stack frames depending on the selected mode.

Designed for pasted logs and text files. Sensitive logs should be reviewed before sharing or exporting.

Example

Paste logs such as “java.lang.NullPointerException: Cannot read field id” and run the tool to get a structured report.

Use cases

  • Server operations.
  • QA bug reports.
  • CI/CD log cleanup.
  • Developer debugging.

Tips for better output

  • Use custom patterns for app-specific log levels.
  • Remove duplicates before sharing a bug report.
  • Keep one or two context lines when investigating failures.

Processing details

The tool uses line-based parsing and practical regular expressions for common server, application, and CI/CD log formats.

Custom log formats may require a specific pattern. Do not paste secrets, tokens, passwords, or private production data into tools you plan to share.

FAQ

How do I use a stack trace cleaner online?

Paste your log text and run the tool. It returns filtered output, counts, and a practical interpretation.

How do I find repeated errors in a log file?

Turn on duplicate removal or review the repeated count in the result card to identify recurring failures.

Can I extract only ERROR lines from logs?

Yes. Choose the ERROR mode or enter a custom pattern that matches your log format.

How do I clean logs before sending a bug report?

Filter the relevant errors, remove duplicate lines, and copy the summarized output.

Why did some log lines not match?

They may use a custom severity format or lack standard keywords. Use the custom pattern field to catch those lines.

Module table

ModuleWhat it checks
ParserReads line-based logs
ExtractorFinds levels, errors, and stack frames
SummaryReports counts and quality scores

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