If you're on Mac platform, you can use the following script that will first prompt you to choose an image, then the script will instruct Photoshop to open it, gather some info, close the image and set your Clipboard to the info. All you have to do is "Paste" the info in a text document or anything you can paste text in. Copy and paste the following code in "AppleScript Editor", compile then run. Hope it helps:
try
set my_file to choose file
tell application "Finder" to set imagename to (get name of my_file)
tell application "Adobe Photoshop CS5.1"
activate
open file (my_file as string)
get properties of document imagename
tell document imagename
set my_mode to mode as string
set my_bitsperchannel to bits per channel as string
set my_width to width as string
set my_height to height as string
set my_resolution to resolution as string
set my_channels to count every channel
set my_layers to count every layer
end tell
close document imagename saving no
set my_report to "Image name: " & imagename & return & "Color Mode: " & my_mode & return & "Bits per channel: " & my_bitsperchannel & return & "Width: " & my_width & return & "Height: " & my_height & return & "Resolution: " & my_resolution & return & "Channel count: " & my_channels & return & "Layer count: " & my_layers & return & return
end tell
set the clipboard to my_report
on error
tell me to display dialog "An error occured while processing file " & imagename
set the clipboard to "An error occured while processing file " & imagename & return & return
end try
