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*Details: File format summary



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


External signatures File extension: pdf
Internal signatures
Name PDF 2.0
Description PDF 2.0 allows an arbitrary amount of information to appear before the PDF 2.0 data starts. For now we are setting a max offset of 4096 bytes from the BOF before we expect to see the %PDF-2.0 tag as this should encompass most use-cases and also maintain processing efficiency for any identification tools using PRONOM data. If you find this offset is inadequate please contact the PRONOM team. Also seeking EOF sequence %%EOF within final 1024 bytes. This signature cannot currently identify files that were incrementally saved to PDF 2.0 from a previous PDF version (for example PDF 1.7), and this scenario will currently return an identification for the orignal format. Please contact the PRONOM team if you can assist with developing a signature that can account for such a use-case.
Byte sequences
Position type Absolute from BOF
Offset 0
Maximum Offset 4096
Byte order  
Value 255044462D322E30
Position type Absolute from EOF
Offset 0
Maximum Offset 1024
Byte order  
Value 2525454F46
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