Popular:
 Building Resilient Systems on AWS: Learn how to design and implement a resilient, highly available, fault-tolerant infrastructure on AWS.

Get Image Dimensions from Command Line

By  on  

The command line is a gold mine if you come from the perspective of a UI lover.  Getting information from the shell instead of opening an app, finding a file or directory, etc...what a novel concept.  Opening different image files opens up different apps on my Mac and, as the kids say, "ffs" -- I just want to know the image dimensions.

Using ImageMagick you can find the dimensions of an image from command line:

# Get the size of a JPG
convert photo.jpg -print "Size: %wx%h\n" /dev/null
# Size: 600x872

# Get the size of a PSD
convert website-design.psd -print "Size: %wx%h\n" /dev/null
# Size: 990x1200

You can get the image dimensions of any image type from PNG to JPG to GIF to even PSDs.  And the resulting text is as plain as it could be.  Dimensions...here you are.

Request Metrics real user monitoring
Request Metrics real user monitoring
Request Metrics real user monitoring
Request Metrics real user monitoring

Recent Features

  • By
    How to Create a Twitter Card

    One of my favorite social APIs was the Open Graph API adopted by Facebook.  Adding just a few META tags to each page allowed links to my article to be styled and presented the way I wanted them to, giving me a bit of control...

  • By
    Page Visibility API

    One event that's always been lacking within the document is a signal for when the user is looking at a given tab, or another tab. When does the user switch off our site to look at something else? When do they come back?

Incredible Demos

  • By
    Create WordPress Page Templates with Custom Queries

    One of my main goals with the redesign was to make it easier for visitors to find the information that was most popular on my site. Not to my surprise, posts about MooTools, jQuery, and CSS were at the top of the list. What...

  • By
    Printing MooTools Accordion Items

    Sometimes we're presented with unforeseen problems when it comes to our JavaScript effects. In this case, I'm talking about printing jQuery and MooTools accordions. Each "closed" accordion content element has its height set to 0 which means it will be hidden when the...

Discussion

  1. Justin

    I like to use ImageMagick’s identify command. Easy to remember and gives the size along with some other helpful info:

    identify photo.jpg
  2. ennkay

    but that means having ImageMagick installed.

    on a mac you have the native sips command that returns info and modifies image files.
    ex. to get all sorts of info on an image just do:

    sips -g all  /Users/your_account/image_path.mime

    more info on sips available at:
    https://developer.apple.com/library/mac/documentation/Darwin/Reference/ManPages/man1/sips.1.html

    • David Walsh

      Wow, thanks for the heads up! I didn’t know about sips!

  3. Jose Miguel Pérez

    Wow! I always wonder why the command file is so unknown on the Mac?

    $ file test.psd
test.psd: Adobe Photoshop Image, 918 x 445, RGB, 3x 8-bit channels

    No need to install anything! Use man file for more information. Works for every kind of files, not just images:

    $ find . -print0 | xargs -0 file
.:                                     directory
./.DS_Store:                           Apple Desktop Services Store
./Designs:                             directory
./Designs/.DS_Store:                   Apple Desktop Services Store
./Designs/Web Structure.txt:           UTF-8 Unicode text
./Designs/WebContents.docx:            Microsoft Word 2007+
./Designs/WebContents.rar:             RAR archive data, v1d, os: Win32
./Designs/OCMWeb02:                    directory
./Designs/OCMWeb02/.DS_Store:          Apple Desktop Services Store
./Designs/OCMWeb02/OcmWeb07Copy.png:   PNG image data, 973 x 984, 8-bit/color RGB, non-interlaced
./Designs/OCMWeb02/OcmWeb10Backup.png: PNG image data, 975 x 877, 8-bit/color RGB, non-interlaced
./Designs/Logos - Testing 2.ai:        PDF document, version 1.5
./Designs/Testing Cards.ai:            PDF document, version 1.5
[...]

Wrap your code in <pre class="{language}"></pre> tags, link to a GitHub gist, JSFiddle fiddle, or CodePen pen to embed!