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*Details: File format summary

    
 

 

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Details for: CDX Internet Archive Index

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Go to:  Summary  |  Documentation  |  Signatures |  Compression  |  Character encoding  |  Rights  |  Reference files   Properties  
 

Signatures
External signatures File extension: cdx
Internal signatures
Name CDX Archive Index variant 1
Description BOF: <field delimiter (usually space)>CDX<field delimiter (usually space)>, followed by CDX options as described here: https://archive.org/web/researcher/cdx_file_format.php For signature strength we currently assume the field delimiter will be a space character (hex 0x20) rather than a wildcard, with scope to add further delimiters as they are encountered.
Byte sequences
Position type Absolute from BOF
Offset 0
Maximum Offset 0
Byte order  
Value 2043445820
Name CDX Archive Index variant 2
Description BOF: 'CDX' <field delimiter (usually space)>, followed by CDX options as described here: https://archive.org/web/researcher/cdx_file_format.php. This format could potentially be strengthened if necessary with the inclusion of one or more of the CDX options, which are to date an alphabetic character (upper or lower case, a-z, A-Z with a few exceptions) or the hash value
Byte sequences
Position type Absolute from BOF
Offset 0
Maximum Offset 0
Byte order  
Value 43445820
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