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This page describes the basics and syntax of modifiers. Modifiers (also called filters) are used to modify, format, or check values in the template directly upon output or further processing — for example, adjusting text, rounding numbers, or transforming lists.

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Basics & syntax

Modifiers are not written as a standalone function call but applied to an existing value. A modifier always processes the value to its left. The result can be output directly or stored in a variable for later reuse. Modifiers are “appended” to a value with the pipe operator |: 
{{= <value> | <modifier> }}
If a modifier requires additional parameters, these are specified in parentheses: 
{{= <value> | <modifier>(<parameter1>, <parameter2>, ...) }}

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Modifier overview

A complete list of all available modifiers is not maintained separately here, since almost all global functions from the reference page Functions can also be used as modifiers.

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Examples

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Example upper

Output value in uppercase 
{{= "Sneaker Classic" | upper }}
= 
SNEAKER CLASSIC

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Example replace and lower

Prepare value for URL/slug (replace spaces + lowercase) 
{{= "Sneaker Classic" | replace(" ", "-") | lower }}
= 
sneaker-classic