Filters are simple methods that modify the output of numbers, strings, variables and objects. They are placed within an output tag {{ }} and are denoted by a pipe character |.

<!-- product.title = "Awesome Shoes" -->
{{ product.title | upcase }}
AWESOME SHOES

In the example above, product is the object, title is its attribute, and upcase is the filter being applied.

Some filters require a parameter to be passed.

{{ product.title | remove: "Awesome" }}
Shoes

Multiple filters can be used on one output. They are applied from left to right.

<!-- product.title = "Awesome Shoes" -->
{{ product.title | upcase | remove: "AWESOME"  }}
SHOES