# Rename based on certain tag fields incl. regexp

**URL:** https://community.mp3tag.de/t/rename-based-on-certain-tag-fields-incl-regexp/46001
**Category:** Support
**Created:** [July 25, 2019, 8:07am UTC](https://community.mp3tag.de/t/rename-based-on-certain-tag-fields-incl-regexp/46001 "2019-07-25T08:07:17Z")
**Posts on this page:** 1
**Showing post:** 4

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### Author: ![ohrenkino](https://community.mp3tag.de/user_avatar/community.mp3tag.de/ohrenkino/32/4843_2.png) [@ohrenkino](https://community.mp3tag.de/u/ohrenkino)
#### Post date: [July 25, 2019, 9:43am UTC](https://community.mp3tag.de/t/rename-based-on-certain-tag-fields-incl-regexp/46001/4 "2019-07-25T09:43:07Z")

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> [@Regular Expressions](https://community.mp3tag.de/t/regular-expressions/521/69):
>
> Where can I find more information about regular expression

The help?

> **[Replace with Regular Expression – Mp3tag Documentation](https://docs.mp3tag.de/actions/replace-regexp/)**
>
> Documentation on the Replace with Regular Expression action type that can be performed as Quick Action or as reusable workflow from Action Groups. Mp3tag is the universal Tag Editor.

To create actions see the FAQs:

> [@Actions and batch-operations](https://community.mp3tag.de/t/actions-and-batch-operations/967/2):
>
> How to create a new action? First, create a new action group via Actions \> [Actions] Actions or Alt + 6. Then, click on the button [New] New and give your action group an expressive name, e.g., "All tag fields Upper Case". This action group can be applied to the selected files after you have added one or more actions to it. Now, you can create a new action in your action group via the button [New] New and choose the desired action type from the list. At the moment the following action types …

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