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If anyone is familiar with Windows 7, you can change the view to "Thumbnail" and see what the image is before opening the file. I noticed on Ubuntu that PDF files show a preview, but it seems like .jpg files doesn't.

Can this be changed so I can preview the image without opening the file?

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good evening, are you using nautilus? (i guess not) because i just checked it and my 11.10 setup shows thumbnails for jpg images - or did i got the question wrong? – spheniscida Mar 2 '12 at 16:52
@spheniscida You are right, displaying thumbnails for .jpg files (and tons of others) is default in Ubuntu. – Rafał Cieślak Mar 2 '12 at 16:59
up vote 3 down vote accepted

In Nautilus (the default Ubuntu install) there is an option to turn off thumbnails. Perhaps you turned it off? Open a file manager and go to Edit > Preferences > "Preview" tab > Other previewable files > Show thumbnails: Local Files Only.

If that doesn't work, you could try clearing the contents of ~/.thumbnails

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This worked. It was set for Local Files Only and changed it to Always since the files I was looking at were on the network. – Muhnamana Mar 2 '12 at 18:19

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