XIFF

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== File Identification ==
 
== File Identification ==
  
Evidence suggests there is an ASCII signature at offset 8. The signature can be either "{{magic|XEROX DIFF}}", or "{{magic|&nbsp;eXtended&nbsp;}}"<ref>https://files.transtutors.com/cdn/uploadassignments/3103417_1_guide-to-computer-forensics-and-investigations-------pg-384--407---1-.pdf#page=11</ref> (with the leading and trailing space).
+
XIFF 3.0 Header begins with the standard [[TIFF]] header, at offset 8 for 10 bytes contains either "{{magic|XEROX DIFF}}", or "{{magic|&nbsp;eXtended&nbsp;}}" for version 2 & 3 respectively. At offset 18 there is one byte to indicate version, followed by another byte at offset 19 to indicate a revision number. See page 25 of XIFF 3.0 spec <ref>https://github.com/thorsted/pronom-research-week/blob/master/XIFF/Xiff3_0.doc</ref> and this forensic book <ref>https://files.transtutors.com/cdn/uploadassignments/3103417_1_guide-to-computer-forensics-and-investigations-------pg-384--407---1-.pdf#page=11</ref>
  
 
== Disambiguation ==
 
== Disambiguation ==

Latest revision as of 22:38, 14 October 2020

File Format
Name XIFF
Ontology
Extension(s) .xif
MIME Type(s) image/vnd.xiff
Wikidata ID Q28207555
Released ≤1997

XIFF (eXtended Image File Format, Xerox Image File Format[1]), also known as XIF (eXtended Image Format, Xerox Image Format[2]) and also DigiPaper/XIF[3][4], and apparently also Xerox DIFF, is a raster graphics format associated with ScanSoft and Xerox. It is a compound image format, similar in concept to Mixed Raster Content or JPM.

XIFF is probably considered to be proprietary, though the MIME type registration indicates that there was a specification at the (long dead) URL http://www.xerox.com/xis/xiff/.

Also used as the file format for Fax software such as the FaxWave service.[5]

ScanSoft has a long and complicated history. It was a part of Xerox around the time XIFF was developed, and since 2005 is a part of Nuance Communications.

Contents

[edit] Format details

XIFF is an extension of TIFF. There is extension data starting at offset 8, which is not referenced by any TIFF tag. Also related to the TIFF-F[6] specification.[7]

XIFF is possibly related to TIFF-FX mixed raster content subtype (See RFC 2301 & RFC 2531).

A TIFF viewer that does not support XIFF will likely either not display certain elements at all, or display them as separate pages.

[edit] File Identification

XIFF 3.0 Header begins with the standard TIFF header, at offset 8 for 10 bytes contains either "XEROX DIFF", or " eXtended " for version 2 & 3 respectively. At offset 18 there is one byte to indicate version, followed by another byte at offset 19 to indicate a revision number. See page 25 of XIFF 3.0 spec [8] and this forensic book [9]

[edit] Disambiguation

  • Not related to the XIFF instant messaging library.
  • Not related to XLIFF (XML Localisation Interchange File Format). (It's apparently a common typo to write "XIFF" instead of "XLIFF".)

See also the XIF disambiguation page.

[edit] Software

[edit] Links

[edit] References

  1. https://archive.org/download/gov.uspto.patents.application.10767044/10767044-2004-01-29-00007-SPEC.pdf, p.5
  2. https://web.archive.org/web/20070223154220/http://www.objectrescue.com/products/recover-file-types.html
  3. http://www.vincent-net.com/luc/papers/99isdm_document_talk.pdf
  4. http://www.dlib.org/dlib/january00/moll/01moll.html
  5. https://web.archive.org/web/20000512013555/http://www.callwave.com/faxviewers.html
  6. https://tools.ietf.org/html/rfc2306#:~:text=TIFF-F
  7. https://archive.org/details/MacAddict-073-200209/page/n23/mode/2up?q=xif
  8. https://github.com/thorsted/pronom-research-week/blob/master/XIFF/Xiff3_0.doc
  9. https://files.transtutors.com/cdn/uploadassignments/3103417_1_guide-to-computer-forensics-and-investigations-------pg-384--407---1-.pdf#page=11
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