Details: File format summary

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| Signatures

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Properties

Summary
Name	CDX Internet Archive Index
Version
Other names
Identifiers	PUID: fmt/869
Family
Classification	Text (Structured)
Disclosure
Description	A CDX file consists of individual lines of text, each of which summarizes a single web document. The first line in the file is a legend for interpreting the data, and the following lines contain the data for referencing the corresponding pages within the host. The CDX signatures use a field delimiter character which is assumed to be a space character, however please contact the PRONOM team should you encounter CDX index files where the delimiter is different.
Orientation
Byte order
Related file formats	None.
Technical Environment
Released
Supported until
Format Risk
Developed by	None.
Supported by	None.
Source	Digital Preservation Department / The National Archives
Source date	14 Jan 2016
Source description
Last updated	22 Sep 2020
Note