# Check plugin or theme validity

**URL:** <https://meta.discourse.org/t/check-plugin-or-theme-validity/137111>\
**Category:** Support\
**Created:** [December 26, 2019, 5:07pm UTC](https://meta.discourse.org/t/check-plugin-or-theme-validity/137111 "2019-12-26T17:07:47Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![Falco](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/falco/32/179432_2.png) [@Falco](https://meta.discourse.org/u/Falco)\
**Post date:** [December 26, 2019, 6:04pm UTC](https://meta.discourse.org/t/check-plugin-or-theme-validity/137111/2 "2019-12-26T18:04:55Z")

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First, a lot of those are themes, and shouldn’t be installed via the app.yml file.

Second, you shouldn’t install any plugin in Discourse by default. Everything you need to have a discussion forum comes included in the main software. Plugins should be added only after careful consideration, if the increased complexity overweight the added features.

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_[View the full topic](https://meta.discourse.org/t/check-plugin-or-theme-validity/137111)._