---
title: "Liquid filters: concat"
description: Concatenates (combines) two arrays.
api_name: liquid
source_url:
  html: https://shopify.dev/docs/api/liquid/filters/concat
  md: https://shopify.dev/docs/api/liquid/filters/concat.md
---

# concat

```oobleck
array | concat: array
```

Concatenates (combines) two arrays.

***

Note

The `concat` filter won't filter out duplicates. If you want to remove duplicates, then you need to use the [`uniq` filter](https://shopify.dev/docs/api/liquid/filters/uniq).

***

```liquid
{%- assign types_and_vendors = collection.all_types | concat: collection.all_vendors -%}


Types and vendors:


{% for item in types_and_vendors -%}
  {%- if item != blank -%}
    - {{ item }}
  {%- endif -%}
{%- endfor %}
```

## Output

```html
Types and vendors:


- Animals & Pet Supplies
- Baking Flavors & Extracts
- Container
- Cooking & Baking Ingredients
- Dried Flowers
- Fruits & Vegetables
- Gift Cards
- Health
- Health & Beauty
- Invisibility
- Love
- Music & Sound Recordings
- Seasonings & Spices
- Water
- Clover's Apothecary
- Polina's Potent Potions
- Ted's Apothecary Supply
```