Free online PCAPNG to TXT converter
Export PCAPNG traffic as searchable packet summaries or protocol dissections in plain TXT.
Convert PCAPNG to TXT online - free
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Conversion statistics: PCAPNG to TXT
Updated November 14, 2026, from conversions on 101convert.com
How to convert pcapng to txt file
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Support systems, ticketing tools, and document workflows may accept only readable text instead of a binary network capture. Exporting PCAPNG as TXT creates a searchable packet summary or protocol dissection for sharing, reporting, or archiving, but the original capture must be retained for further analysis.
What the PCAPNG format is
PCAPNG, short for Packet Capture Next Generation, is a binary container for recorded network traffic. It can store captured packet data, timestamps, interface descriptions, comments, name-resolution records, and traffic from multiple interfaces in one file.
Wireshark, tshark, dumpcap, current versions of some tcpdump-based tools, network appliances, intrusion-detection systems, and operating-system capture utilities can create or read PCAPNG files. Network administrators, security analysts, developers, and support teams use them to investigate DNS, HTTP, TLS, routing, authentication, and application-connection problems.
What the TXT format is
TXT is an unstructured plain-text format. A packet-capture export may contain one summary line per packet, selected protocol fields, or a verbose human-readable dissection of each packet.
Plain text can be opened by text editors, searched with tools such as grep, compared in version-control systems, attached to tickets, and processed by scripts that cannot read PCAPNG. It has no universal packet-capture schema and normally does not preserve raw packet bytes, packet offsets, interface blocks, all capture metadata, or a format that can be imported back into a packet analyzer.
How to convert PCAPNG to TXT
Keep the original .pcapng file before exporting. Choose a summary, selected-field report, or full dissection according to what the receiving system needs.
Wireshark and TShark are the most reliable local options because they decode the capture rather than merely changing its filename.
Using Wireshark
- Open the
.pcapngfile in Wireshark. - Apply a display filter if the report should contain only matching packets, for example
dns,http, orip.addr == 192.0.2.10. - Choose File → Export Packet Dissections → As Plain Text.
- Choose all packets or only displayed packets, select the required packet-detail level, and save the result with a
.txtextension.
Exporting only displayed packets excludes packets hidden by the display filter. A summary produces a smaller report; a full dissection includes substantially more protocol fields and decoded data.
Using TShark
TShark is Wireshark's command-line analyzer and is suitable for repeatable exports and large captures. Install Wireshark, which normally includes TShark, or install TShark separately, then run these commands from a terminal.
For the default one-line-per-packet summary:
tshark -r capture.pcapng > capture.txt
For a verbose protocol dissection of every packet:
tshark -r capture.pcapng -V > capture-details.txt
For a detailed report containing only packets selected by a display filter:
tshark -r capture.pcapng -Y "dns or http" -V > selected-packets.txt
For a compact, field-based export:
tshark -r capture.pcapng -T fields -E header=y -E separator=, -E quote=d -E escape=y -e frame.number -e frame.time -e ip.src -e tcp.srcport -e ip.dst -e tcp.dstport -e _ws.col.Protocol -e _ws.col.Info > packet-fields.txt
The last command writes delimited text with a .txt extension; it is not automatically a formally identified CSV file. Use a separator that cannot occur in the selected values, or parse the quoted output with a delimiter-aware tool.
Using 101convert
You can convert a file on 101convert.com for free without installing software. Upload the PCAPNG file, choose TXT as the output format, start the conversion, and download the result. Do not upload captures containing credentials, cookies, personal data, private addresses, or proprietary traffic unless the service's handling and deletion terms meet your requirements.
Quality and compatibility limits
PCAPNG-to-TXT has no single standardized output. The result depends on the exporting tool and version, enabled protocol dissectors, display filters, selected fields, packet-detail settings, and character encoding.
TXT cannot normally support later packet filtering, stream reconstruction, packet reassembly, or protocol analysis. It cannot restore bytes missing because the capture used a limited snap length. Encrypted application data remains unreadable unless the analyzer has the required session keys and decryption settings.
Review the exported text before sharing. Verbose dissections can expose IP addresses, usernames, URLs, cookies, tokens, payload data, and internal system details, and may be much larger than a summary or the source capture. Retain the unmodified PCAPNG as the analyzable or evidentiary copy.
PCAPNG vs TXT: format comparison
How the PCAPNG and TXT formats compare on the properties that matter most for this conversion.
| Property | .PCAPNG PCAP Next Generation Capture File Format | .TXT Plain Text File |
|---|---|---|
| Open standard | Yes | Yes |
| Compression | Uncompressed | Uncompressed |
| Typical file size | Large | Very small |
| Opens in a web browser | No | Yes, natively |
| Further editing | Not directly editable | Easy |
| Metadata support | Extensive | None |
| Plain-text readable | No | Yes |
| Best used for | Data exchange | Data exchange |
| Introduced | 2008 | — |
| Developer | IETF (working group; widely used in Wireshark/libpcap ecosystem) | — |
| MIME type | application/octet-stream | text/plain |
Information about file extensions and file types is provided by File-Extensions.org
Suggested software and links: pcapng to txt converters
Frequently asked questions
Is the PCAPNG to TXT converter free?
Yes, converting PCAPNG to TXT on 101convert.com is completely free. No registration, email address or installation is required. If you need a higher file size limit or want to convert more files at once, see our plans.
How large can my PCAPNG file be?
You can upload PCAPNG files up to 3 MB and convert up to 3 files at once in a single batch. With a paid plan the limit is up to 200 MB per file and 10 files at once, see our plans.
What happens to my uploaded files?
Files are processed automatically and deleted from our servers within a few minutes after conversion. We never view or share your files.
Do I need to install any software to convert PCAPNG to TXT?
No. The PCAPNG to TXT conversion runs entirely online in your browser and works on Windows, Mac, Linux, Android and iPhone.
Did the conversion fail?
In most cases, the cause is an incorrect file format. Please upload a valid PCAPNG file for this PCAPNG to TXT conversion. Occasionally, the issue may be on our side. We analyze recurring conversion failures and disable or fix the converter if we detect a defect.
Does converting PCAPNG to TXT keep the original captured packets?
No, it exports packet summaries or protocol dissections as readable text rather than preserving the original binary packet blocks. Capture metadata and decoded fields may be included, but the result is not a packet capture that can be restored exactly.
Why is my PCAPNG TXT export missing packet contents?
The export may contain only packet headers and decoded fields, depending on its detail level. Encrypted, compressed, unsupported, or binary payloads usually remain unreadable or appear as hexadecimal data instead of message text.
Will a PCAPNG converted to TXT be searchable?
Yes, the resulting plain text can be searched for addresses, protocols, timestamps, decoded fields, and other text included in the dissection. What can be found depends on which packet details were exported.
Can I convert the TXT file back to the original PCAPNG?
No, a TXT export is generally not reversible because it flattens packet structure, raw bytes, and capture metadata into text. A verbose text dump may be larger than a summary, while a summary can be much smaller than the original capture.