Jhead
Jhead is a command line driven utility for extracting digital camera settings from the Exif format files used by many digital cameras. It handles the various confusing ways these can be expressed, and displays them as F-stop, shutter speed, etc. It is also able to reduce the size of digital camera JPEGs without loss of information, by deleting integral thumbnails that digital cameras put into the Exif header. If you need to add Exif support to a program, this is a simple program to cut and paste from. Many projects, including PHP, have reused code from this utility.
| Tags | multimedia Graphics Graphics Conversion |
|---|---|
| Licenses | Public Domain |
| Operating Systems | Windows Windows Windows POSIX BSD FreeBSD Linux |
| Implementation | C |
Recent releases
- 03 Mar 2009 10:08
Changes: A recently introduced bug which caused the "-ce" (edit comment field) option to fail was fixed.
- 16 Feb 2009 16:07
Changes: A recently introduced bug with "-ce" was fixed. The ability to move files with the -n option was added. Various minor typo and documentation fixes were made.
- 05 Oct 2008 23:28
Changes: More EXIF tags are decoded in '-v' mode. Several potential string overflows were fixed. A missing deletion of IPTC section on "-purejpg" was fixed. A GPS altitude decode bug was fixed.
- 04 Apr 2008 09:22
Changes: The program was made aware of XMP data to not delete such sections. IPTC handling was slightly improved. The date encoding in EXIF header creation was changed to make it more compatible.
- 15 Nov 2007 09:40
Changes: IPTC handling was added. The extraction of subject range from Pentax and Fuji cameras and the extraction of focus distance from Canon were implemented. The quiet option "-q" was added. Handling of corrupted GPS directories was fixed.
