Dimensions of an image file?

[thatkeith]

I'm working on a tool that will help my students understand image resolution in relation to page layout for print. One thing I need to do is find the pixel dimensions (width, height) of any given image file: JPEG, TIFF, PSD and other bitmap image formats.

I'm getting somewhere with AppleScript, although dealing with file paths across LC and AS is, er, 'interesting'

But is there a way to do this (find the pixel width and height of a given image file) natively in LC?

k

[Klaus]

Hi Keith,

on the Mac you can use SIPS (Scriptable Image Processing System) with shell!
Use something like this to get the dimensions of any image:

Code: Select all

on mouseUp
  answer file "Select image..."
  put QUOTE & it & QUOTE into tImage
  get shell("sips -g pixelHeight" && tImage)
  put last word of it into tHeight
  get shell("sips -g pixelWidth" && tImage)
  put last word of it into tWidth
  answer "Image dimensions:" && tWidth & "," & tHeight
end mouseUp

Best

Klaus

[thatkeith]

Wow - when in doubt, shell.

I had a bit of a search for a CLI solution (honest, I did!) but I was too hung up on my 'close but no cigar' efforts with AppleScript. This is superb and easy to weave into my experiments – many thanks!

k

[Klaus]

Hi Keith,

glad I could help!

And SIPS can do a lot more with images, see the MAN page here:
https://developer.apple.com/legacy/libr ... ips.1.html

And yes, AppleScripts SUCKS, hard to believe that HyperTalk was intended to be the first Scripting language for Mac OS, but then they chose AppleScript

Anyway, have a nice day!


Best

Klaus