> ## Documentation Index
> Fetch the complete documentation index at: https://doc.lucidworks.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Filters

[localhost link]: http://localhost:3000/docs/5/app-studio/reference/filters/overview

[mintlify link]: https://doc.lucidworks.com/docs/5/app-studio/reference/filters/overview

[old doc.lw link]: https://doc.lucidworks.com/app-studio/4.2/1011

Filters are AngularJS based filters that can be implemented in the markup by piping the filter name to a data object, which transforms the object. See [Filter Syntax](/docs/5/fusion/dev-portal/appkit/reference/filters/filter-syntax) for more information.


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