PCAP

Readable

other

The pcap file format was invented for use by tcpdump, a packet analyser used to examine and interpret network traffic.

Identify it

Extensions.pcap.cap.dmp
MIME typesapplication/vnd.tcpdump.pcap
Signatures
a1b2c3d4 at byte 0 (pcap Big Endian)
d4c3b2a1 at byte 0 (pcap Little Endian)
PRONOMfmt/779fmt/780
WikidataQ28009435

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Versions and variants (1)

Sources

From Just Solve the File Format Problem (File Formats Wiki), PRONOM, Wikidata. Updated 2026-10-24.

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