How To Rename a File Extension

David Polanco
A previous resident of Del Rio Texas now living in the San Antonio. Web designer, SEO, and Graphic Artist.

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How To Rename a File Extension

May 10th, 2006 6:08:48 pm - Subscribe
Mood: good
Music: Reggie and the Full Effect - Happy V Day

Explains how a user can easily rename a file extension to place on a web server or to send via email.

To rename a file extension simply do the follow steps on a Microsoft Windows Based System. This does not include Windows 98, for WIndows 98 files are hidden within the system.

Lets Get Started
Goto - My Computer > Tools Menu > Folder Options > View Tab > Find Hidden Files and Folders > Click Show Files and Folders > Now Click Ok

Once this is done you can now rename the files extension. To do this right click on the icon that you would like to rename its extension and left click rename. Once this is done rename everything to the right on the dot in the file.

This works great if you have a webhosting company that will not allow you to upload certain types of files on the server. Or if you would like to send a file over the internet that is not allowed. Just Rename the File Extension!

Tweet this entry | 11 Comments | Post a comment

anonymous - January 08th, 2007
it doesnt help anything

anonymous - March 19th, 2007
It works Awesome for changing .mmf ringtone file extension names to get them to work on Tmobile phones. T-Mobile drops .mmf files. THANK YOU A++++

anonymous - March 19th, 2007
Ooops for anyone needing to know, change the file extension to .mid

anonymous - September 10th, 2007
Thanks you are a life saver. I use Ghostscript (free on Sourceforge) to create pdf flyers for my business (see: stores.ebay.com/classical-guitar-gear) instead of expensive Adobe, but for Adobe Reader to open them without needing select the program, I need to remname the extension to .pdf. You showed me how.
Thanks a million.

david - September 10th, 2007
Not a problem, glad I could help out.

anonymous - January 01st, 2008
Make sure to have "Hide file extensions for known file types" unchecked. Otherwise there will not be any file extension in the file name to rename.

anonymous - June 14th, 2009
I really like your post. Does it copyright protected?

anonymous - June 23rd, 2009
there is no "my computer" on vista. I believe on Vista, you just right click on the file and select "Rename"

anonymous - August 03rd, 2009
i downloaded a fallout 1 torrent and it came up as a mdf file and when i converted it to a mid file it wouldnt play

what should i rename the file to?

david - August 03rd, 2009
A .MDF File Extension is to be burned to CD by Alcohol 120% CD software.

anonymous - December 06th, 2009
For vista or windows 7 go to start menu, click computer, USE THE RIGHT SIDE OF KEYBOARD ALT KEY, this brings up a hidden menu at the top, click on tools/folder options, click the view tab, then uncheck the box that says "hide file extensions for known file types" , then just right click the file and delete the extension that is there and replace whith what you want.

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