Change the extension Solved/Closed

Question

Hello,  I would like to change the extension of several files at once, for example: polo.bmp to polo.jpg  Thank you.

k0rn13 · Accepted Answer

Hello

There is a rustic but effective method:

1> Place all your files in a folder like C:\Work
2> start Run CMD and confirm
2> navigate to the folder using the CD command

example: CD c:\work + enter

you should see C:\Work> displayed before proceeding

If you are not on the correct disk (partition) you need to type its letter and hit enter
example D: + enter

3> type ren *.jpg *.bmp and press enter
(ren stands for rename * is a wildcard replacing any name)

the conversion is done, then type Exit + enter or close the window

Zempachi · Answer

Hi, changing an extension won't change the file type. Otherwise, for your issue, you can create a script. And there are software programs that should do this for you, check out telecharger.com.

ragus · Answer

I know that it doesn't change the file type. In fact, when I save images from the internet by "save image as", it saves the image as jpg, bmp, or gif, but sometimes as a simple file without any extension. I rename the file with ".jpg" and I get my image, but when I have several of them, it becomes tedious.
I would like to be able to select several of these files and change the extension (possibly also the name) all at once.

Thank you.

ragus · Answer

By selecting multiple files, you can rename them all at once, which will increment the same file name with (0), then (1), and so on. However, this will not change the extension, can anyone help me?

yoghi · Answer

Thank you, super, it works in the blink of an eye!!! Just goes to show that the good old DOS commands are still in vogue!!!! BRAVO!

visite éclair · Answer

A BIG thank you for this clear answer to this clear question!! You’ve made at least one other person happy!  Wishing you all the best.

Galinette · Answer

I would even say three! Very useful for changing my .mod files from my camcorder to .mpg  Thank you very much!

Abdu93 · Answer

And four  Thank you very much

lego · Answer

and five super tutorials, thank you very much!

Anonymous user · Answer

Take a .bmp to .jpg converter.

Anonymous user · Answer

Thank you very much k0rn13! It saves me from having to manually change the extension of 69 files. A big time saver.

Hic83 · Answer

Wow, with that, I did 3 hours of work in 3 seconds. Thanks ^^

alphonse007 · Answer

Simply awesome! Thank you for sharing this information.

tom · Answer

And another happy THANK YOU VERY MUCH!!

django · Answer

if you want to rename all files regardless of their extension: ren *.* *.jpg

xFast3 · Answer

It doesn't work, they say that the syntax of the command is incorrect. Please help me!

Niko_METI · Answer

Complement:
In my case, I had an application that was seriously malfunctioning and was giving me a double extension like .pdf.pdf instead of just .pdf.

To fix the 800 impacted files and those that would continue to have errors, I used:
ren *.pdf.pdf *.

This command removed the last extension, so my files ended up with just .pdf as they should have been from the beginning.

Invité · Answer

He tells me that there's a syntax error or something like that ^^''

invité · Answer

The software 'Ant Renamer' answers the initial question. It allows for a whole range of renaming operations on file extensions.

Change the extension

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