Attached is a modified FITSKeywords script that supports both FITS and XISF files. The script has also been refactored to PI current standards and a couple of bugs have been fixed. Version 1.0.3 is attached
The Series analysis report of the Blink process can be used as well for the output of selected FITS keyword and their values. The output will be written to the Process Console, and optionally also to a text file.
You can use the lskwd command from Process Console to get a list of all FITS keywords in the active image written to the console. If desired, you can copy the text from the console and paste in any plain text editor, such as our Script Editor.