S StackToZ
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DEVELOPER TOOL

Log Analyzer

Drop in application logs and instantly see levels, errors, warnings, timestamps, and the lines that need attention.

Processed locally in your browser

Log input

Paste logs or open a .log, .txt, or .out file.

↥
Drop a log file here or Files are read locally and never uploaded.
RAW LOG 0 lines
⌘ / Ctrl + Enter
⌁

Ready to analyze

Paste your logs or load a file, then analyze them to see a structured breakdown.

01

How to use

  1. Paste logs or drop a log file into the analyzer.
  2. Click Analyze logs to parse the content.
  3. Use level and text filters to isolate entries.
  4. Copy the summary or export the analysis as JSON.
02

FAQ

Are my logs uploaded?

No. Parsing happens entirely in your browser. The tool does not send your log contents to a server.

What log formats are supported?

The parser recognizes common levels such as ERROR, WARN, INFO, DEBUG, and TRACE, plus ISO-style and common date/time timestamps. Unstructured lines are retained as OTHER.

Can I analyze large files?

Yes, within your browser's available memory. Very large files may take longer to parse because the entire input is kept locally for filtering and export.