pcapng viewer

A focused PCAPNG file viewer for network engineers and security analysts to quickly parse, summarize, and export PCAPNG capture data.

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About This Tool

The PCAPNG Viewer parses uploaded PCAPNG capture files to provide a structured analysis that is useful for network troubleshooting and security investigations. It emphasizes quantities such as total packets, duration, and byte counts, along with a breakdown by protocol and top talkers. Conceptually, the tool reads the capture blocks, interprets header metadata, and derives higher-level metrics without altering the original file. The viewer enables quick triage by presenting a summary first, followed by optional per-protocol drill-downs and session reconstructions. It supports exporting results in common formats to integrate with other analysis pipelines. Benefits include faster incident triage, reproducible summaries for audits, and the ability to share structured results with teammates. Core value lies in turning raw packet dumps into actionable statistics, enabling engineers to verify traffic patterns, detect anomalies, and pinpoint timing irregularities. Use cases include verifying protocol usage during performance tests, identifying unusual traffic bursts, and documenting findings for post-incident reports. Unique differentiators are its focused PCAPNG parsing fidelity, streaming capability for large files, and streamlined export options that fit into security and networking workflows. Core features such as protocol distribution, top talkers, and optional session reconstruction provide a practical balance between depth and speed for day-to-day analysis. The tool is intended for professionals who require accurate, exportable data from PCAPNG captures without deploying heavy, desktop-bound tooling.

How to Use

  1. Upload a PCAPNG file to the tool.
  2. Initiate parsing and wait for the summary to render.
  3. Review the analysis summary and per-protocol breakdown.
  4. Apply optional filters or reconstruct sessions if needed.
  5. Export results as CSV or JSON for downstream workflows.
How to use pcapng viewer

Frequently Asked Questions

Find Quick Answers

What formats are supported for input and output?
The input must be a PCAPNG file. Output can be a structured JSON-like report within the tool and exports to CSV or JSON for external processing.
Can I analyze very large PCAPNG files?
Yes, the tool uses streaming or chunked parsing to handle large captures while controlling memory usage; for extremely large files, filtering before upload is recommended.
Can I reconstruct network sessions from the capture?
Session reconstruction is available as an optional advanced feature, grouping packets by 5-tuple within a defined time window to visualize flows.
Is this suitable for security investigations?
It provides fast, structured summaries and exports that support initial triage and evidence sharing; it is not a full forensic suite and should be complemented with deeper analysis if needed.

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