Some changes to a minimal photo gallery (pix)
* works with jpg (ignores png/other)

+ tap for previous/next
+ photos can have user defined captions
+ album titles

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Create folders ("albums") here, copy images into these folders.

To generate images (1080, 256), create HTML, run
    python3 pix.py

pix.py to be run again if edit album.html and index.html, change the CSS, enable/disable captions, etc. or if photos are added/delete/renamed. 
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Captions -> to create json template using album and file names, run 
    python3 write_captionsJSON.py 
    
-> generates captions.json in js folder {album/image.ext: "enter-caption-here", ...}
-> open captions.json in txt editor to edit / enter captions
* write_CaptionsJSON.py can be run again in case files are added/deleted
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The image viewer supports the following keyboard shortcuts:

    Escape  Back
    Left    Previous
    Space   Play/Pause
    Right   Next
    Minus   1080p
    Plus    Original