doug> I have a topic idea and/OR question-for-list-here+now, but only half a clue;

  I seek the Grail (our group's collective mind meld) on....

Resizing/cropping images efficiently w/r/t

  ( a) my time to perform the file manipuation, and

   (b)  efficient+good  JPG compression/filesize-shrinking.

In my nearly-abandoned Windows-OS world, I had/have an obscure tool ACDSee 

     which I paid $10-20 for, 25 yrs ago ! (still avail for windows only)  which....

--- is very easy/quick to use in my opinion

--- does an easy image rotation if needed

--- does an easy crop-and-save  (the main feature for me)

--- magically, without asking about quality/compression? DOES COMPRESS Very Well:

       .... I can crop most images (eg typical smartphone jpg around 4mb for example,

     ........ I can crop most of it and save with a typical result = 10-20% of original file size = 400-800k

     ........... and you wouldn't believe how good the 10%-smaller image tends to look.

GIMP can do these,  except seems to lack the magical quality of ACDSee for a downsize.

while doing GIMP's  Crop first, then Export to JPG, GIMP Export asks for a QUALITY in the 1-100% range,

if I choose 10% I do get a 400k file, but it's grainy as you might expect,

and I wonder how ACDSee does such superior compression with barely any loss/grainy result.  -------doug