# ACTIONS that mimics a WYSIWYG to Change File Extension or File Name and Extension (2022-2023)

**URL:** https://community.mp3tag.de/t/actions-that-mimics-a-wysiwyg-to-change-file-extension-or-file-name-and-extension-2022-2023/60139
**Category:** General Discussion
**Created:** [February 20, 2023, 10:00pm UTC](https://community.mp3tag.de/t/actions-that-mimics-a-wysiwyg-to-change-file-extension-or-file-name-and-extension-2022-2023/60139 "2023-02-20T22:00:48Z")
**Posts on this page:** 1
**Showing post:** 5

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### Author: ![wneclass2018](https://community.mp3tag.de/letter_avatar_proxy/v4/letter/w/cdc98d/32.png) [@wneclass2018](https://community.mp3tag.de/u/wneclass2018)
#### Post date: [February 21, 2023, 9:42am UTC](https://community.mp3tag.de/t/actions-that-mimics-a-wysiwyg-to-change-file-extension-or-file-name-and-extension-2022-2023/60139/5 "2023-02-21T09:42:29Z")

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> [@ohrenkino](#):
>
> way - it is not: if I enter e.g. mP3 as new file extension, the extension becomes lower case.  
> Why doesn't the action create the fields it needs when all it does is to convert to lower case only any way?  
> Where is the benefit that I have to create user-definded fields first, then apply the action, then delete these fields again?  
> While a simple "Replace with regular expression" would serve the same purpose much quicker, see

WYSIWYG only applies to the first 2 actions. It doesn't apply to the "CONVERT File Extension (%\_extension%) to Lowercase by wneclass2018 (February 20th 2023).mta" since that .mta file was created convert uppercase extensions to lowercase.  
If you truly want a WYSIWYG with no restrictions (i.e. can add spaces as a extension), then you can use this string, without quotations, "%preserve\_original\_filename%.$if2(%NEW\_FILE\_EXTENSION%,%preserve\_original\_extension%)". Likewise, on a different mp3tag community forum, I explained it more in detail here: [Not possible to change filename w/ extension via file view - #6 by wneclass2018](https://community.mp3tag.de/t/not-possible-to-change-filename-w-extension-via-file-view/12107/6)

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