Filters can be used in expressions to perform some transformations on variables such as formatting a date, converting a string to uppercase, or joining a list of strings.

Filters are separated from the variable name by a pipe symbol |. Multiple filters can be chained together so that the output of one filter is applied to the next one.

The following example turns the name into title case:

{{ name | title }}

Filters that accept arguments have parentheses around the arguments. This example joins the elements of a list into a string, with list elements separated by commas:

{{ list | join(', ') }}

To apply a filter on a section of code, wrap it with the filter tag:

{% filter lower | title %}
{% endfilter %}

Each section below represents a built-in filter type.

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