# Actions and batch-operations

**URL:** https://community.mp3tag.de/t/actions-and-batch-operations/967
**Category:** FAQ (Frequently Asked Questions)
**Created:** [April 16, 2004, 7:46am UTC](https://community.mp3tag.de/t/actions-and-batch-operations/967 "2004-04-16T07:46:06Z")
**Posts on this page:** 1
**Showing post:** 3

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### Author: ![dano](https://community.mp3tag.de/user_avatar/community.mp3tag.de/dano/32/6_2.png) [@dano](https://community.mp3tag.de/u/dano)
#### Post date: [April 16, 2004, 8:40am UTC](https://community.mp3tag.de/t/actions-and-batch-operations/967/3 "2004-04-16T08:40:54Z")

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### How to change upper/lower case of tag fields or filenames?

Create a [new action](https://community.mp3tag.de/t/actions/967/2) in an existing action group and choose Case conversion as action type.

- **Field** determines which parts of the tags/filename should be changed.
- **Case conversion** determines how the upper/lower case of the field will be changed.

If you want for example mark chars after a left parenthesis or a hyphen as the begin of a word, enter the respective char under **Words begin from/after any of**.

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_[View the full topic](https://community.mp3tag.de/t/actions-and-batch-operations/967)._