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Marc Wandschneider is a professional software developer with well over fifteen years of industry experience (yes, he really is that old). He travels the globe working on interesting projects and gives talks at conferences and trade shows whenever possible.

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My book, "Core Web Application Programming with PHP and MySQL" is now available everywhere, including

My "PHP and MySQL LiveLessons" DVD Series has just been published by Prentice-Hall, and can be purchased on Amazon, through Informit, or Safari

Jun 04, 2008 | 16:53:14
JustLooking 3.2 (Mac Image Viewer) now available for Download
By marcwan

I’m pleased to announce the immediate availablity of JustLooking 3.2. JustLooking is a program to view pictures and images on your Mac OS X (Tiger or Leopard) based computer. JustLooking is a Universal Binary, and can be run on both PowerPC and Intel Macs. The program is and will always be very free.

JustLooking 3.2 contains a number of critical bug fixes and minor improvements on the 3.1 release.

  • The Leopard CoreImage memory leak has been avoided
  • Image blurring in regular view is fixed
  • Image rotation and resizing saving is now fixed
  • Finnish and German language translations are back (yay!)
  • The Korean “File” menu is no longer translated as “Delete File”
  • AppleRemote support is back in Leopard

JustLooking 3.0 pretty much contains more new features and code than all the previous versions of JustLooking combined! New features include:

  • New transition effects in full screen mode.
  • A thumbnails / preview window with thumbnails of all windows in the same directory.
  • Image resizing support.
  • Recent Images file menu.
  • A new look and feel for the toolbar.
  • Toolbar buttons can be made small or large.
  • An Update Checking system to look for new versions of JustLooking (including automatic updates).
  • Saving of Images to a number of different formats with configurable settings (including animated GIFs).
  • (optional) Honouring Exif Orientation value when showing images.
  • (optional) The mouse wheel can move between images now.
  • Stretch to Window mode has been added. It can be the default mode.
  • (optional) Disable Screen Saver in Full Screen Slide Mode.
  • Hide Cursor in full screen slide show.
  • (optional) When returning from slide show, viewer window moves to same image.
  • DEL key deletes images.
  • Arrow keys now work in full screen mode.
  • Delete confirmation is optional now (preferences).
  • There is a new Image Info Window.
  • (optional) Automatically open first file in last folder visited.
  • (optional) program can go directly to full screen slide show.
  • A new context menu has been added.
  • Background colour can be changed.
  • Set as Desktop Background option.
  • File Associations preference has been fixed.
  • Lots of bug fixes.

Note that image saving has been expanded to allow you to save files in any of 5 supported formats (more coming). I currently do not preserve meta-data (EXIF, PNG info, etc), nor do I support animated GIFs, but will support this in the next version hopefully. You can now also scale and save images, which will be quite convenient.

JustLooking 3.2 includes the following language translations:

  • French
  • Italian
  • Swedish
  • Chinese (Simplified)
  • Portuguese
  • Spanish
  • Dutch
  • Slovenian
  • Polish
  • Korean
  • Catalàn
  • Finnish (back!)
  • German (back!)

Due to the large number of changes in 3.0, the following translations have not been included, and will hopefully be added to a language update in a few weeks as I get help from users:

  • Russian
  • German
  • Norwegian
  • Finnish
  • Chinese (Traditional)

Thanks to all the people who help out with translations. Shipping this program in multiple languages is extremely cool! (I actually have a Hungarian version in the works too. Super cool!)

As always, I’d love to hear your comments and feedback on 3.0, and hopefully there won’t be many problems that need fixing!! I have been using 3.0 for a few weeks here by myself without much trouble, so I hope this good luck continues!

New for Version 2.5:

  • Core Image, OpenGL, and Quartz drawing for faster image processing and transitions.
  • Deleting the last image in a directory caused an exception an error message bug fixed.
  • Rotating zoomed images not updating scroll bars bug fixed.
  • Dutch/Flemish version added (thanks to Olaf de Vries).
  • Added some people to the credits whom I had forgotten. Apologies Emmanuel and Mathias!

New for Version 2.0.2:

  • The arrow key navigation problem that some, but not all, users have been seeing has been fixed.
  • Support for the following languages has been added:
    • Portuguese (Brasilian)
    • Chinese (Traditional, Taiwan)

New for Version 2.0.1:

  • The following localisations have been added or updated:
    • Norwegian
    • Swedish
    • Simplified Chinese
    • Italian (updated)
    • German (updated)
    • French (updated)
  • I have been working on adding accessibilty features to JustLooking, but the docs on this are kinda monstrous, and it’s taking some time to work through.
  • There are no major bug fixes in the 2.0.1 release. I am investigating a couple of common problems relating to arrow keys on certain older macs, and will post a fix for that as soon as possible.

New for Version 2.0:

  • Based on the suggestions and feedback from some users, I have completely redesigned and rewritten the user interface for JustLooking, implementing the smoked-black look that a lot of applications are moving towards in Leopard.
  • Image resizing has been made significantly faster and less memory intensive. Image rendering is also much quicker.
  • There is now remote control support in slide show mode:
    • next/prev image
    • pause/restart
    • exit
    • increase/decrease show time by 2 sec
  • Basic saving of rotated images for PNG, GIF (non-animated only), JPEG, TIFF, and BMP file formats.
  • GIF file support has been completely fixed and is now properly working for all animated and transparent images.
  • Hold down “option” key on startup causes app to go to full screen slide show.
  • I have fixed a number of bugs in the program.


Welcome to JustLooking, an image viewing program for Mac OS X. JustLooking is designed to be used instead of the “Preview” application on your computer for browsing images. In particular, it has the following differences:

  • It focuses on files and directories instead of lists of files. Thus, once you load a file, you can easily navigate through all other files in the same directory.
  • It displays images at their native resolution instead of interpreting DPI information stored in the image meta-data. While images are printed at the maximum resolution possible, on screen they are displayed pixel-by-pixel.
  • Being designed more for viewing of Images, it properly shows animated GIF files.
  • The entire program can easily be manipulated and powered by simple keystrokes for a quick and pleasant viewing experience.
  • JustLooking also supports such basic features as printing and rotating and will hopefully prove to be sufficiently functional for most users’ needs.

It should be noted that the application cannot completely replace Preview, as there are a number of features in the latter that JustLooking simply does not have, such as selecting and copying regions, saving images in various formats, and viewing of Adobe Portable Document Format (PDF) files.

Requirements and Installation

Running JustLooking is quite simple, and the only requirements are:

  • Mac OS X 10.4 or greater
  • 256MB RAM
  • 4MB free disk space

JustLooking is installed on any new machine by simply dragging it into the Applications folder.


JustLooking was designed, written, and partially localised (French, Italian, German, Spanish, and some Chinese) by Marc Wandschneider here in Beijing over a couple of casual months. I sat down to write it as a replacement for Preview, as I found the latter to rarely operate in a way that I wanted it to. I tend to keep directories full of images, whether they be traveling, family, or junk I collect from the Intarwebs.

Finder and Preview rarely let me select and view more than a couple hundred of images at a time, and I have large numbers of folders with more files than that.

The following people have helped with Localisation of JustLooking:

  • German – Stefanie Schau
  • French – Laurent Molina
  • Italian – Roberto Bellina
  • Spanish – Carola Clavo
  • Russian – Sergey Melnik
  • Finnish – Markus Peltomäki
  • Norwegian – Geir Werner Hagen
  • French – Emmanuel Lemor
  • Swedish – Henrik Östlund
  • Swedish – Mathias Sjöström
  • Chinese (Simplified) – Zhang Tongzhu
  • Chinese (Simplified) – Emma Liu
  • Italian – Marco Frasca
  • German – Marc’s dad.
  • Chinese (Traditional) – Nitoc Taiwan
  • Portuguese (Brasilian) – Helvécio Mafra
  • Dutch / Flemish – Olaf de Vries
  • Slovenian – Miha Rekar
  • Polish – Tymon Kokoszka
  • Chinese (Simplified) – Jack Zhong
  • Catalàn – Iván Ponce Gómez
  • Korean – Kim Hanjo
  • German – Steven Simmat
  • Finnish – Jouni Kähkönen

Help us Out

Speak a language that isn’t in the list of currently localised languages? See some mistakes in the current translation for a particular language? If you’d like to help or offer corrections, I’d love the help. The more languages, the better!!

Coming Up

I’m thinking of adding the following features in future versions.

  • Support for saving more image file formats.
  • Resizing and saving of images.
  • Batch resizes and renames (the holy grail of free image programs).
  • Support for more resizing algorithms.

I’d love to hear if users have any suggestions. Feel free to contact me with any features you’d like to see!

Comments (78) Add Comment | Tags: justlooking mac image viewer update
Cosmetic bug:
Posted By: marcwan Jun 07, 2008 20:52:18
Hey Lorenzo!

Yah, that jerkiness when doing transitions appears to be because CoreImage has to "prep" the transition once and then can smoothly do it after that ... i'll see if there's a way to get it be faster ....

I do the following filters / transformations: resize, (rotation,) translation, and then a fade transition.

i'll update my blog as i figure out new ideas.

thanks for the feedback.


Sort Order
Posted By: marcwan Jun 08, 2008 09:43:33
Good Sir!

The sorting currently used is that returned by the NSFileManager object in Cocoa, which appears to sort for HFS filesystems, but I guess not for other file systems.

I'll make a note to add some code to allow more user control over sorting for the next version.


Preview/Thumbnail drawer
Posted By: Jamali Jun 11, 2008 10:01:16
I think your program is great. One suggestion though, it would be good to add a scalable slide-out draw so that users can jump to specific photos in a folder rather than having to go through each one.
Posted By: marcwan Jun 11, 2008 16:42:38

There already is a thumbnail window (Cmd+T), but i'm thinking of integrating it into the main window for the next version.



switching between translations
Posted By: Eriks Harjo Jun 14, 2008 03:57:51
Firs of all - thanks for this masterpiece! :)

Maybe silly question but how can i change interface language (switch from english to other language). I checked all menu bar and pref pane..... nothing. Did not find a place where can i do that. Help!?

I’m thinking about to make translation in latvian :)
Changing Location
Posted By: marcwan Jun 14, 2008 07:58:32
To change your system locale, you go to System Preferences, and then under "Language", select "Edit List", and from there you Latviešu. If you want to do a Latvian translation, send me email and i'll send you the instructions on how to do it.

Some issues, comments and suggestions
Posted By: remain Jul 08, 2008 20:00:47

Posted By: marcwan Jun 11, 2008 16:42:38
"There already is a thumbnail window (Cmd+T), but i'm thinking of integrating it into the main window for the next version."

That is a great idea! I do find it a bit cumbersome to have 2 different windows to deal with. (for moving, resizing, minimizing, etc.)

A sidebar would be a much more elegant choice in my opinion.

It'd be extra awesome if there could be a choice of whether it's a vertical sidebar or a horizontal pane (a la Windows XP's Filmstrip view), and even the choice of placing it on the left/right or top/bottom. That'd give users the choice to place it to their liking.


Speaking of the Thumbnail Window, here's an issue I've mentioned before, long ago.

I find that in the Thumbnail Window, there aren't enough characters for the file names.
For instance,
something like "Christmas Party 2008 - john and mary.jpg" would be shortened to "Chris... ary.jpg"

It'd be nice if it would be a 2-line filename display, much like the Finder.

It'd allow the filenames to be much more readable.


I find the current keyboard shortcuts for zooming a bit flawed.

Let's see:

Command 1 - Actual Size/100%
Command 2 - 200%
Command 3 - Fit to Window
Command 4 - Stretch to Window
Command 5 - Other...

To me, this seems somewhat random.

Also, Command 3 (Fit to Window) and Command 4 (Stretch to Window) are not necessarily larger than 100% and 200%,
so as you can imagine, going from Command 1 to Command 4 doesn't make sense in some situations. (zooms in, then shrinks, then zooms in again)

I'd suggest Command 0 for 100%, since that's the standard used by many programs, including Preview.
Also, it's close to Command - and Command +, which are the Zoom Out/In keyboard shortcuts, such that you have the Zoom Out, Zoom In and "reset zoom" shortcuts all next to each other.

Actually, since - and + work by themselves as Zoom Out/In, I'd suggest just 0 to also work as 100%.

Command 2 for 200% is not all that necessary. (If there's a keyboard shortcut for 200%, then why not 300%? Why not 50%?)

And I'd definitely suggest something else than Command 3 and Command 4 for Fit to Window and Stretch to Window.


Unless I'm missing something, there is still no mouse-only way to exit Slide Show.

View > Start Slide Show is inactive.
File > Close is active but has no effect when clicked.

The only way to exit Slide Show is to press the Escape key.

Thanks a lot for your time and for your efforts in making JustLooking!
Posted By: tinfoil Jul 22, 2008 12:41:38
Good day,

Excellent software. Does virtually everything I want it to do, with one small exception. I would love to see the + and - keys zoom level to be a bit more granular. It goes from non-zoomed to damn, that's way too big far too quickly. It would also be nice if it zoomed from the center of the image rather than the bottom left.

That's the only improvement I can think of.
Amazed by a dramatic change to Mac World!!!!
Posted By: Opti Jul 24, 2008 00:49:52
First, I want to congratulate you for standing up and making a change to the Picture Viewing world of Mac. I personally dislike Preview and dozen of programs that some people recommend out there as a second choice. I was looking with hunger for a program with the simplicity as Windows Picture Viewer for XP. And i FOUND IT!!!! Not only it has that simplicity, but it does have better candy eye in terms of navigation effects and interface.

Marc Wands, thank you for your worthy contribution into the Mac World experience.
Translation Errors?
Posted By: marcwan Aug 12, 2008 09:36:47
I welcome any and all bug reports and suggested fixes! If you'd like to help out with translations, send me an email to "marcwan" at this domain, and I'd be happy for the offer.


Option for Random or Shuffle in Slideshow
Posted By: Charles Willson Aug 20, 2008 18:32:10
Hi Marc,

Nice clean app! This could be a daily user for me if it had a random or shuffle option in slide show mode. What's the chance?


Posted By: marcwan Nov 05, 2008 20:08:27
Comments aren't deleted. As a spam prevention measure, they just have to be reviewed and approved by me. I usually do this daily, but sometimes if I'm traveling, there might be a few days delay.

Sorry but ...
Posted By: Marcus Nov 21, 2008 14:46:25
Sorry but ...
I think you are making a good job but the PDF format is my usual type to working in my courses.
Also your wiewer have a many types and is well, but not a pdf.
Browser Mode
Posted By: marcwan Dec 27, 2008 19:13:55
There is the "Thumbnails" window right now, which you can resize to your heart's content. You can also change the size of the thumbs in that window to help you out.

I'm thinking of integrating it into the main window in the next version, as teh external window just feels clunky and out of place.

Bugs vs. Intentional
Posted By: marcwan Jan 01, 2009 21:47:02
Jeff: Actually, that "Save As..." behaviour is kind of by design: After JL saves an image, it then "loads" that image in the UI, which causes the dir change. Sometimes it's exactly what I want, sometimes it annoys me immensely :-). Maybe i'll make it a checkbox in the save dialog or something.

The Undelete is something I would like too -- I frequently accidentally delete files as well. Added to the list, as is the move to.

Thanks everybody for the feedback and requests. I'll squeeze in some free time in the near future to work on a new release of JL, so please be patient!


Posted By: Kim Feb 20, 2009 00:04:35
A great viewer, really, and ALMOST everything I've been looking for. I'm not fond of Preview, and Xee is too cluttered... this one is so elegant.

But I agree with the person who said they missed sorting by date. I love browsing through folders of pictures from newest to oldest, and the fact I can only do it alphabetically is a major flaw in an otherwise awesome app.
Posted By: marcwan Feb 21, 2009 22:10:16
I've seen this a couple of times on my machine, and I've always assumed it's a bug in OS X ... It seems to be with images that have been associated with or viewed with some other program before.

I have found that, when writing JustLooking, the OS X file association system is extremely complicated and messy, with multiple levels of association, which are hard to keep in sync. I even got mail from an Apple developer once saying the same thing :-).

Major Request: Please let it READ SUB-FOLDERS!
Posted By: Sub-Folder Man Mar 06, 2009 12:53:55
Please! I love this program and use it all the time. But I need one major feature.

As of now it only reads pictures within a folder, that's it. It doesn't read if there is ANOTHER folder inside of that folder.

In Example: I have 10 folders inside of One Master folder. As of now, I have to go inside each of the 10 picture folders at a time.
I wish I could just add ONE folder and have ALL the 10 Folders read at the same time.

Or Highlight 15 folders on my desktop full of pictures and drag them at the same time and have Just Looking read all the
pictures inside all 15 folders.

Essentially it should Read whatever you throw at it.

I would appreciate this feature added on your next update...Cheers!!
Posted By: Justis St. Hilaire May 01, 2009 11:36:39
Dear Sir,

I recently converted being a Mac user within the last three weeks when my PC crashed on me. I was really feeling sick about not having my ACDSEE image viewer program. I used it every day. When I phoned ACDSEE to ask them when they would have one formated to be used on Mac the best they could tell me was, "Maybe in a year." They were obviously not that interested in servicing Mac users and to me that is a very stupid way of doing business in this world.

I just had to write you and to express my heartfelt gratitude for what you have produced as it is a program that will be used by myself on a daily basis. I would like to ask you to take a look at the ACDSEE image viewer for PC's and to consider building up your program to be able to do every thing that ACDSEE does. In the event that you do this I would be the first to purchase your product or send you a donation for your efforts. Mac users really need a image viewer like what ACDSEE offers and the features is has. Please let me know if you take this challenge on. In the event you put something together that is basically a Mac version of ACDSEE and has the same functionality I would be the first to purchase it from you. In the mean time I will use the image viewer you created and would to again express a big thank you for your sharing it with a new Mac user. Best!!
Probably posted in the wrong place but my thirty-odd seconds time span for looking for a valid e-mail is over.
Posted By: Javier May 04, 2009 17:29:50
Hi Mark,
First, thanks for your software, JustLooking, it does what it says it does, fast, and for free: excellent.

Secondly, I downloaded from your http link instead of using the p2p, before reading about your bandwidth issue!
Sorry, please accept this little contribution to your Spanish translation efforts:

As I use the program and if I find it useful, I promise to consider contributing further.



Esta parece ser la primera vez que utiliza JustLooking.

JustLooking está pensado para servir como visualizador para la mayoría de los archivos de imágenes en su ordenador, y puede además substituir a la aplicación “Vista Previa“ como su visualizador predeterminado.

¿Quiere que Just Looking se convierta en el visualizador de imágenes predeterminado?

Sí (Puede especificar que tipos)
No, deje “Vista Previa“ como visualizador predeterminado.
No entiendo. Explíquemelo mejor.

Registro de Tipos de Archivos

¿Quiere que JustLooking se registre como visualizador predeterminado para todos los tipos de archivo que conoce o prefiere elegirlos usted mismo de una lista?

Regístrar para todos los formatos soportados
Déjeme escoger de una lista
just looking-bomb app
Posted By: joe May 11, 2009 18:34:05
wow it's so much better than ghetto-ass preview. apple should be hating you but no.. you don't charge for your app, besides you're basically keeping it a secret on your own blog/site..where's your swag brother? you've earned some.

i found your app on he seemed stoked about it, so i would hv paid a fe bucks. everyone knows app starts looking very sexy once people are forced to start paying for it-or [k]racking it (but what do you care?)

Its like this- when you die your legacy is not the actual body of your work from this life but only that which people will remember or credit you for.
Colour profiles
Posted By: marcwan May 28, 2009 20:39:43

Current versions of JustLooking misbehave and do not re-save metadata for JPEG files. I have fixed this for 3.3, which will be released sometime in the next couple of weeks - all metadata and colour profile data is now re-saved along with files, so hopefully this problem will be corrected.


Some Spanish Proofreading
Posted By: Javier Aug 19, 2009 04:09:19
Hi Marc, I posted this on your other page, a note for your Spanish translation, this is how I would say it, in Spanish from Spain, if you need a hand with this project, or indeed any other translation queries from English into Spanish do not hesitate to contact me.

Thanks for the program.

Esta parece ser la primera vez que utiliza JustLooking.

JustLooking está pensado para servir como visualizador para la mayoría de los archivos de imágenes en su ordenador, y puede además substituir a la aplicación “Vista Previa“ como su visualizador predeterminado.

¿Quiere que Just Looking se convierta en el visualizador de imágenes predeterminado?

Sí (Puede especificar que tipos)
No, deje “Vista Previa“ como visualizador predeterminado.
No entiendo. Explíquemelo mejor.

Registro de Tipos de Archivos

¿Quiere que JustLooking se registre como visualizador predeterminado para todos los tipos de archivo que conoce o prefiere elegirlos usted mismo de una lista?

Regístrar para todos los formatos soportados
Déjeme escoger de una lista
Hey Javier!
Posted By: marcwan Aug 20, 2009 02:04:31
I was trying to find out how to contact you before but couldn't see it. Send me email to marcwan @ this domain and I'll add you to the list of helpers :)

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