File formats/Compressed
Jmol can read and write (export) a number of compressed file (collection) formats. Two of these are particularly useful.
JMOL
JMOL files, typically with a .jmol extension, are a compressed Zip format containing the structure data file, script file containing the state together with any other necessary files.
The JMOLformat can be be exported from Jmol using:
write ZIPALL "fileName"
or
write JMOL "fileName"
PNGJ
PNGJ files, typically with a .png extension, are a ZIP extension of the PNG image format containing, in addition to a snapshot image, the structure data file, script file containing the state together with any other necessary files. Similar to JMOL format but also including a snapshot image.
The PNGJ format is particularly convenient in that most operating system and web application file systems will display the png snapshot image as, for example, a thumbnail as an email or forum attachment. Jmol itself can use the PNGJ format to load a cover image prior to loading the interactive structure.
The PNGJ format can be exported from Jmol by:
write IMAGE width height PNGJ n "fileName"
width and height are optional and default to the current frame size
