Exif Jpeg header manipulation tool
Things jhead can extract from an Exif jpeg file:
* Time and date picture was taken
* Camera make and model
* Integral low-res Exif thumbnail
* Shutter speed
* Camera F-stop number
* Flash used (yes/no)
* Distance camera was focused at
* Focal length and calculate 35 mm equivalent focal length
* Image resolution
* GPS info, if stored in image
* IPTC header
* XMP data
Things jhead can modify in an exif jpeg file:
* Up-right images according to rotation tag using jpegtran
* Set or relative adjust internal exif timestamps
* Fix date / time offsets in large batches of images
* Re-name or date stamp files according to exif timestamp
* Transfer exif headers between images
* Replace thumbnails inside Exif headers
* Edit jpeg comments (but not the Exif comments)
* Delete exif or comment sections from jpeg images
* Create new minimal exif header containing date and thumbnail
The files coming out of a pretty much all Digital cameras are in the Exif flavour of Jpeg files. Exif files are for the most part Jpeg files, but start with a different header block, and contain additional data sections with camera settings, as well as a preview thumbnail picture as part of the Exif header. Many image browsers today make use of this integral thumbnail when browsing, while other browsers make their own thumbnails based on the image as a whole.
Because I am interested in photography, I am always curious just exactly what settings my fully automatic digital camera actually did end up using. Back in 1999, when I originally wrote jhead, I couldn't find a program that would consistently display the settings, nor one that could be compiled into a simple executable. I have since added many more features to jhead, many of them the result of suggestions or code contributions.
Though there are many programs out there now that can manipulate Exif headers today, for many tasks, jhead remains the simplest and most effective tool for the job, especially if used for automated or scripted tasks.
The program also has a lot of other command line options for manipulating Exif files, such as options to manipulate the date in the header, renaming image files, or coordinating running Jpegtran and Mogrify to manipulate whole directory trees of images.
For novice Linux/Unix/OS-X users: Don't forget to set the executable bit after downloading the pre-built executables. Type "chmod +x jhead" at a shell window after downloading it to do this.
ProStockMaster is a free desktop software application helping to sell photos online through stock photography agencies. Adopted by thousands of amateur and professional photographers since its first launch in 2006, ProStockMaster is the first of its kind application dedicated to ease the process of working with multiple microstock and traditional stock .... Free download of ProStockMaster for Mac OS X 2.0.5
... web design, machine learning, and in visual interfaces for other technical domains. The Graphviz layout programs ... in useful formats, such as images and SVG for web pages, PDF or Postscript for inclusion in other documents; or display in an ... an XML dialect.) Graphviz has many useful features for concrete diagrams, such as options for colors, fonts, .... Free download of Graphviz for Mac OS X 2.39.20150228
PTGui is panoramic stitching software for Windows and Mac OSX. Originally developed as a Graphical User Interface for Panorama Tools (hence the name), PTGui now is ... hundreds of images into multi gigapixel panoramas Support for jpeg, tiff and png source images Support for many camera RAW source images (through dcraw) Create .... Free download of PTGui for Mac OS X 9.1.3
dispcalGUI is a graphical user interface for the display calibration and profiling tools of Argyll ... of the many supported hardware sensors, with support for multi-display setups and a variety of available settings ... Other features include: Support of colorimeter correction for wide-gamut screens via correction matrices or calibration specral sample files (the latter only for specific colorimeters i.e. i1 Display Pro, ColorMunki Display .... Free download of dispcalGUI for Mac OS X 22.214.171.124
... graphics language that provides a natural coordinate-based framework for technical drawing. Labels and equations are typeset with LaTeX, for high-quality PostScript output.Asymptote is a graphic tool that provides a standard for typesetting mathematical figures. A major advantage of ... program. FEATURES: · provides a standard for typesetting mathematical figures, just as TeX/LaTeX has become .... Free download of Asymptote for Mac OS X 2.32
Album, book and digital photomontage, scrapbook, digital scrapbooking. Free download of PhotosArtist for Mac OS X 1.3.0 Vertige
Designed to enable you to create knitting and embroidery schemes. Free download of Scheme Maker 1.4 Beta
Album, book and digital photomontage, scrapbook, digital scrapbooking. Free download of PhotosArtist 1.3.0 Vertige
Liquib emulates liquid image, marbled paper and Droste type effects. Free download of Liquib 2.2