---
title: "Liquid filters: compact"
description: Removes any `nil` items from an array.
api_name: liquid
source_url:
  html: https://shopify.dev/docs/api/liquid/filters/compact
  md: https://shopify.dev/docs/api/liquid/filters/compact.md
---

# compact

```oobleck
array | compact
```

Removes any `nil` items from an array.

```liquid
{%- assign original_prices = collection.products | map: 'compare_at_price' -%}


Original prices:


{% for price in original_prices -%}
  - {{ price }}
{%- endfor %}


{%- assign compacted_original_prices = original_prices | compact -%}


Original prices - compacted:


{% for price in compacted_original_prices -%}
  - {{ price }}
{%- endfor %}
```

##### Code

```
{%- assign original_prices = collection.products | map: 'compare_at_price' -%}

Original prices:

{% for price in original_prices -%}
  - {{ price }}
{%- endfor %}

{%- assign compacted_original_prices = original_prices | compact -%}

Original prices - compacted:

{% for price in compacted_original_prices -%}
  - {{ price }}
{%- endfor %}
```

##### Data

```
{
  "collection": {
    "products": [
      {
        "compare_at_price": null
      },
      {
        "compare_at_price": null
      },
      {
        "compare_at_price": null
      },
      {
        "compare_at_price": null
      },
      {
        "compare_at_price": "1000000.59"
      },
      {
        "compare_at_price": null
      },
      {
        "compare_at_price": null
      },
      {
        "compare_at_price": null
      },
      {
        "compare_at_price": "10.00"
      },
      {
        "compare_at_price": null
      },
      {
        "compare_at_price": "25.00"
      },
      {
        "compare_at_price": "400.00"
      },
      {
        "compare_at_price": null
      },
      {
        "compare_at_price": null
      },
      {
        "compare_at_price": null
      },
      {
        "compare_at_price": null
      },
      {
        "compare_at_price": null
      },
      {
        "compare_at_price": null
      },
      {
        "compare_at_price": null
      }
    ]
  }
}
```

## Output

```html
Original prices:


- 
- 
- 
- 
- 100000059
- 
- 
- 
- 1000
- 
- 2500
- 40000
- 
- 
- 
- 
- 
- 
- 


Original prices - compacted:


- 100000059
- 1000
- 2500
- 40000
```