Some useful filters in DTL are:
- lower
- escape
- linebreaks
- truncatewords
- join
- default
- length
- filesizeformat

University of Michigan - Ann Arbor

Filters may be used in DTL to manipulate variables for display. These are accessed by using a pipe ( | ). For example, to display a variable called "country" in all lowercase, you could do the following:
```python
{{ country|lower }}
```
Filters can be chained together, like so:
```python
{{ summary|truncatewords:15|lower }}
```

Filters in DTL

Django Documentation

List of DTL Filters

https://docs.djangoproject.com/en/3.1/ref/templates/builtins/#ref-templates-builtins-filters

DTL Built-In Filter Reference

You may use external, custom tag and filter libraries in DTL. To access them, first add them to your application's INSTALLED_APPS and then use the following syntax.
```python
{% load library_name %}
```
You may add multiple libraries like so:
```python
{% load library1 library2 library3 %}
```

Learn Before

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