One of the things that I always do on a fresh Windows installation is have it show the extensions on all of my files. I’m not sure how many of you do this, but it seems like I’m changing around extensions quite frequently so it makes a lot of sense for me.
I applauded Vista last year because when you go to rename a file it doesn’t highlight the extension (pictured above). This feature alone has saved me a lot of time and hassle, and I thank whoever decided to do this over at Microsoft. Hope is not lost for those of you running Windows XP.
Lifehacker whipped up a quick AutoHotkey script that will automatically deselect the extension each time you go to rename a file using the F2 key. If you’re not the type of person who uses the F2 key to rename the files then maybe you should look to the free Pitaschio application (no installation needed). It has an “allow extended rename” option that works great on XP, and does essentially the same thing as Lifehacker’s script. Best of all it works with other renaming methods besides the F2 key.
I’m curious as to how many of you actually show the extensions on the files. Let us know in the comments whether you find it necessary to see the extension assigned to every file.

I show the extensions! It really helps when you are trying to open/read/execute a file that has a different icon. Or sometimes my computer decides that it should be opened with one program, when I know it shouldn’t.
I always show the files extensions.
@Ryan:
Running the risk of giving the impression of being a total computer ignorant, I don’t use the file extension at all. As a matter of fact, I don’t know how file extensions work.
The only file extensions that have a meaning to me are: “exe.” and “txt.”
I’m sorry Ryan, but this is really kanji to me.
Regards,
Omar.-
Always show. I even made in my selfmade image of Vista to show the extensions by default
I had a feeling that most of our readers would have extensions enabled. This also got me thinking whether there is another way to change a file’s extension without enabling this feature? I looked all over but saw no alternate methods.
I also show extensions. Lifehacker’s script is good, but I don’t like running an extra app for sth like this.
GNOME has been doing this for some time now, and I love it. Thanks for the Win XP tip.
I always show extensions. How else are you going to know if the file is really the right one or what app to open it with (Windows does not always “guess” right)
I too always show the extensions. Like others have said, Windows doesn’t always pick the right program to open something with (I especially find this to be true of video files) so I’d rather see the extension so I can pick for myself.
Extensions are good to distinguish a worm fom the rest.
One of the first things I do with a clean windows install is to enable view extensions, hidden files, system folders and detail view as defaults. Then I install Pitaschio! I don’t know of any way to alter extensions through explorer when they’re hidden, and I have found that I want to do that surprisingly often.
Also another utility for doing this is qttabbbar. It is useful if you like the other features of the application (tabs, previsualization of files…)
Well, I have enabled the display of extensions for security reasons, and also to ensure that when I rename a file the whole name is highlighted (since I usually include dots in the name).
Since I use xplorer² which does not select the extensions by default, I don’t need any workaround in XP to simulate the Vista behavior.
Always show extensions. I wish this were a default Windows setting and I did not have to set it every time I rebuild (or get a new) system.
I wish it was default as well, but that is coming from a power user’s perspective. Think about how confused regular users would be if they saw extensions!
I wish Konquror(Linux File manager) had this feature. It seems really useful.
I always show extensions. I also prefer the rename to highlight the extensions as well. It’s a time waster for me to have to type it out or re-highlight the file name and extension for cutting and pasting into my HTML code. I’m currently looking for a way to toggle this behavior.
haha Microsoft didn’t think this one up, different Linux distros have been doing it for a long time. Good, ole’ Microsoft playing catch-up……again