# Filter expressions

**URL:** https://community.mp3tag.de/t/filter-expressions/10080
**Category:** Howto
**Created:** [March 11, 2010, 5:37pm UTC](https://community.mp3tag.de/t/filter-expressions/10080 "2010-03-11T17:37:11Z")
**Posts on this page:** 1
**Showing post:** 1

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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: [March 11, 2010, 5:37pm UTC](https://community.mp3tag.de/t/filter-expressions/10080/1 "2010-03-11T17:37:11Z")

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## This topic collects useful Filter expressions

If you have a useful filter expression, please post it here and give a **short description** of what it does.

These filter expressions can be used with the Mp3tag filter [F3].

Please look at [https://docs.mp3tag.de/filter](https://docs.mp3tag.de/filter) for the documentation.

**Notes**

- All filter keywords must be uppercase.
- All operations are case insensitive, for a workaround see [this post](https://community.mp3tag.de/t/10080/4).

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