What format are JSON logs expected in?

One JSON object per line (NDJSON/JSONLines format). This matches Winston, Bunyan, Pino, and most structured loggers.

JSON Log to PDF Report

Convert structured JSON log files (Winston, Bunyan, Pino) to a readable PDF report.

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How to JSON Log to PDF Report

Upload your .log file with one JSON object per line.

Log levels, timestamps, and messages are detected automatically.

Download the formatted PDF report.

Features

Auto-detects Log Format

Level Breakdown Chart

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Winston/Bunyan/Pino Support

When to use JSON Log to PDF Report

JSON Log to PDF Report helps developers, technical writers, API teams, and data teams. Use it when you need to turn LOG files into PDF output, prepare a cleaner sharing copy, or finish a document workflow without installing desktop software.

turn technical files into readable PDFs
share specs and notebooks with non-technical reviewers
archive generated documentation

Quality checklist

Verify code blocks, diagrams, tables, and links.
Check version numbers before publishing.
Keep source files in version control.

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JSON Log to PDF Report

Convert structured JSON log files (Winston, Bunyan, Pino) to a readable PDF report.

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