| Tag Name |
Writable | Values / Notes |
|---|
| CanonVRD |
Y! |
(the full Canon DPP VRD trailer block) |
| Comment |
Y |
(comment embedded in JPEG, GIF89a or PPM/PGM/PBM image) |
| CurrentIPTCDigest |
N |
(MD5 digest of existing IPTC data. All zeros if IPTC exists but Digest::MD5
is not installed. Only calculated for IPTC in the standard location as
specified by the MWG) |
| Directory |
Y! |
|
| EXIF |
Y! |
(the full EXIF data block from JPEG, PNG, JP2, MIE and MIFF images) |
| Error |
N |
|
| ExifByteOrder |
Y |
(only writable for newly created EXIF segments)
'II' = Little-endian (Intel, II)
'MM' = Big-endian (Motorola, MM) |
| ExifToolVersion |
N |
|
| ExifUnicodeByteOrder |
Y |
(the EXIF specification is particularly vague about the byte ordering for
Unicode text, and different applications use different conventions. By
default ExifTool writes Unicode text in EXIF byte order, but this write-only
tag may be used to force a specific byte order)
'II' = Little-endian (Intel, II)
'MM' = Big-endian (Motorola, MM) |
| FileModifyDate |
Y! |
(the filesystem modification time) |
| FileName |
Y! |
(may be written with a full path name to set FileName and Directory in one
operation) |
| FilePermissions |
N |
(r=read, w=write and x=execute permissions for the file owner, group and
others. The ValueConv value is an octal number so bit test operations on
this value should be done in octal, ie. "oct($filePermissions) & 0200") |
| FileSize |
N |
|
| FileType |
N |
|
| Geosync |
Y |
(this write-only tag specifies a time difference to add to Geotime for
synchronization with the GPS clock. For example, set this to "-12" if the
camera clock is 12 seconds faster than GPS time. Input format is
"[+-][[[DD ]HH:]MM:]SS[.ss]". Must be set before Geotime to be effective.
Additional features allow calculation of time differences and time drifts,
and extraction of synchronization times from image files. See the
geotagging documentation for details) |
| Geotag |
Y |
(this write-only tag is used to define the GPS track log data or track log
file name. Currently supported track log formats are GPX, NMEA RMC/GGA/GLL,
KML, IGC, Garmin XML and TCX, and Magellan PMGNTRK) |
| Geotime |
Y |
(this write-only tag is used to define a date/time for interpolating a
position in the GPS track specified by the Geotag tag. Writing this tag
causes the following 8 tags to be written: GPSLatitude, GPSLatitudeRef,
GPSLongitude, GPSLongitudeRef, GPSAltitude, GPSAltitudeRef, GPSDateStamp and
GPSTimeStamp. The local system timezone is assumed if the date/time value
does not contain a timezone. May be deleted to delete associated GPS tags.
A group name of 'EXIF' or 'XMP' may be specified to write or delete only
EXIF or XMP GPS tags. The value of Geotag must be assigned before this tag) |
| ICC_Profile |
Y! |
(the full ICC_Profile data block) |
| ID3Size |
N |
|
| ImageHeight |
N |
|
| ImageWidth |
N |
|
| JPEGDigest |
N |
(an MD5 digest of the JPEG quantization tables is combined with the component
sub-sampling values to generate the value of this tag. The result is
compared to known values in an attempt to deduce the originating software
based only on the JPEG image data. For performance reasons, this tag is
generated only if specifically requested) |
| MIMEType |
N |
|
| MaxVal |
N |
|
| Now |
N |
(the current date/time. Useful when setting the tag values, ie.
"-modifydate<now". Not generated unless specifically requested) |
| PreviewImage |
Y |
|
| PreviewPNG |
N |
|
| RAFVersion |
N |
|
| ResourceForkSize |
N |
([Mac OS only] size of the file's resource fork if it contains data. If this
tag is generated the ExtractEmbedded option may be used to extract
resource-fork information as a sub-document) |
| Warning |
N |
|
| XMP |
Y! |
(the full XMP data block) |
| XResolution |
N |
|
| YResolution |
N |
|