Liquid tag list

This page contains a list of the liquid tags, variables, and filters available to you in Customer.io. Use the search bar below to look for a specific tag.

Our version of Liquid is currently 2.5.3. If you can’t find an answer to your liquid-related question below, we also have our own syntax guide.

New to liquid? Check out our tutorial for marketers!

Our tutorial here can help you understand the fundamentals of message personalization and how to use your data to send engaging messages that increase conversion rates.

Looking for something specific?

Customer.io Tags
These are values generated by, or stored within, Customer.io. Reference these values to import information for a person. Many of the .id values are useful as UTM parameters in links, so you can log where your traffic is coming from or attribute customer actions to messages.
campaign.id
Your campaign’s numerical ID. This can be found in your campaign URL. For example, the campaign ID here is 2000: https://fly2.customer.io/env/12345/v2/campaigns/2000/overview.
Syntax
```
{{campaign.id}}
```
campaign.name
The name that you assigned your campaign or newsletter. For example: “Q2 Anvil Onboarding Campaign [Coyotes]”.
Syntax
```
{{campaign.name}}
```
campaign.type
This returns whether or not your campaign is behavioral (segment triggered), transactional (event triggered), or a newsletter.
Syntax
```
{{campaign.type}}
```
content
Use in layouts to indicate where code added via the email editor will be included. You might use this in a template for a transactional message or API-triggered broadcast where you will provide content from the API directly.
Example
```
{{content}}
```
delivery_id
A URL-compatible base64 string that identifies an instance of a message created for a person. This is set to unsent in test send and composer previews, and generated when the message is drafted or sent.
Syntax
```
{{delivery_id}}
```
event_name
The name of the event that triggers a campaign.
Syntax
```
{{event_name}}
```
layout.id
The numerical ID associated with the email layout you’ve used.
Syntax
```
{{layout.id}}
```
layout.name
The name assigned to the email layout you’re using.
Syntax
```
{{layout.name}}
```
message.id
The numerical ID for a message action in the workflow. For example, an SMS action might have a {{message.id}} of 200. Note that this identifies the action in your workflow, not the individual delivery instances. Every SMS delivery generated from the action would have a different {{delivery_id}}.
Syntax
```
{{message.id}}
```
message.journey_id
The ID for the path a person went through in a Campaign or API Triggered Broadcast workflow. You can use this value to trace message metrics back to a person’s path through a journey using the journey.id value sent in our Reporting Webhooks.
Syntax
```
{{message.journey_id}}
```
message.name
The name you give your message in the workflow, like “Welcome to ACME!”
Syntax
```
{{message.name}}
```
message.subject
If your message has a subject, or the message subject is different from the message name, this tag echos it.
Syntax
```
{{message.subject}}
```
message.type
This refers to a particular message’s type. Possible values are: email_action, push_action, twilio_action, slack_action, webhook_action, urban_airship_action, attribute_update_action.
Syntax
```
{{message.type}}
```
unsubscribe_url
Renders a unique unsubscribe link for a customer and their email-address.
Syntax
```
{% unsubscribe_url %}
```
view_in_browser_url
Our default link that generates a web version of your email, personalized for each recipient. In general, these URLs look something like: http://e.customeriomail.com/deliveries/....
Syntax
```
{% view_in_browser_url %}
```
Variables and Assignment
There are common variables you can reference within messages and elsewhere. These may be variables associated with a person, the event triggering a message workflow, or variables that you assign within your message from other values.

assign

Assign a value to a variable.

Syntax

{% assign var_name = 'value' %}

Input

{% assign favorite_food = 'apples' %}

Output

{{ favorite_food }}

capture

Captures contents and assigns them to a variable.

Input{% capture about_me %}I am 28 and my favorite food is pasta.{% endcapture %}

Output

{{ about_me }}

customer attributes
You reference customer attributes—data associated directly with a person in Customer.io—in the customer scope. You may want to use customer attributes with an if conditional, so that you have text to fallback to if a customer doesn’t have the attribute in question.
Syntax
```
{{customer.<attribute_name>}}
```
Example
```
{% if customer.name != blank %}
  Hi {{customer.name | capitalize}}
{% else %}
  Hi Buddy
{%endif%}
```
event properties
If you trigger a campaign using an event, you can reference properties from the event that triggers your campaign in the event scope. You may want to use event properties with an if conditional, so that you have text to fallback to if an event doesn’t have the property in question or your property doesn’t contain the value you expect.
Syntax
```
{{event.<property>}}
```
Example
```
{% if event.type == "purchase" %}
  Thanks for your purchase!
{% else %}
  Thanks for using our service!
{%endif%}
```
trigger properties
You can reference properties from the data object when you trigger a transactional message or API-trigger a broadcast using the trigger scope. This provides a convenient way to pass event data into transactional and broadcast templates. You may want to use trigger properties with an if conditional, so that you have text to fallback to if your trigger data is incomplete or contains values you don’t expect.
Syntax
```
{{trigger.<data.property>}}
```
Example
```
{% if trigger.first_name %}
  Hi {{trigger.first_name | capitalize}}
{% else %}
  Hi Buddy
{%endif%}
```
Logical Operators
Logical operators determine the basic rules for evaluating true or false statements. You can also use and and or operators to combine logic statements to evaluate multiple conditions.

and

Evaluate a statement as true when both conditions are true.

Syntax{% if condition1 and condition2 %}
  // do something if both condition1 and condition 2 are true
{% endif %}

Example{% if customer.name == "bugs bunny" and event.episode_start == true %}
  What's up doc?
{% else %}
  That's all folks!
{% endif %}

Does not equal (!=)

Use != to check that two values are not equal to each other.

Example{% if customer.name != "daffy duck" %}
  Duck season!
{% else %}
  Wabbit season!
{%endif%}

equals (==)

Use == to check if two values are equal to each other.

Example{% if customer.name == "daffy duck" %}
  Wabbit season!
{% else %}
  Duck season!
{%endif%}

Greater than and Greater than or equal to (>, >=)

Use > to match when one value is greater than another. Use >= to match when one value is greater than or equal to another.

Syntax{% if val1 > val2 %}
  // do something if val1 is greater than val2
{% endif %}

Example{% if customer.acct_age_years > 1 %}
  Thanks for being with us these past years
{% else %}
  Thanks for spending the last year with us!
{% endif %}

Less than and less than or equal to (<, <=)

Use < to match when one value is less than another. Use <= to match when one value is less than or equal to another.

Syntax{% if val1 < val2 %}
  // do something if val1 is less than val2
{% endif %}

Example{% if customer.purchases < 5 %}
  Thanks for your support
{% else %}
  Thanks for spending the last year with us!
{% endif %}

or

Evaluate a statement as true when either of two conditions are true.

Syntax{% if condition1 or condition2 %}
  // do something if either condition1 and condition 2 are true
{% endif %}

Example{% if customer.name == "bugs bunny" or customer.group == "looney toons" %}
  That's all folks!
{% else %}
  See you later!
{% endif %}

Loops and Conditionals
Loop through an array of items or set conditions determining the content that you want to show.

case

Creates a set of conditions depending on a variable’s specific value—like a set of if, if-else, else conditions.

For example, you might use this to display different text depending on if a customer lives in a specific country.

Syntax{% case condition %}
  {% when "value1" %}
    text when condition is value1.
  {% when "value2" or "value3" %}
    text when condition is value2 or value3
  {% else %}
    text when condition does not match other conditions
{% endcase %}

for loop

Repeatedly executes a block of code, most commonly to perform an operation for each item in an array. You might use a for loop in a message to provide a receipt of purchases (assuming an array of items in a purchase). Find more information about for loops and iteration here.

Syntax{% for item in array %}
  {{ item }}
{% endfor %}

Example// You can output each item of the array
{% for member in members_of_band %}
  {{member}}
{% endfor %}

// If the items are objects, you can output properties from each object
{% for product in event.products %}
  - {{ product.title }} x {{ product.price }}
{% endfor %}

if
Executes a block of code if a condition is met. Use elsif to add multiple ‘if’ conditions and else for the block of code you want to execute if all conditions are false. Find more information about conditional liquid here.
Example
```
{% if customer.name == "chad" %}
  Hey Chad!
{% elsif customer.name != "chad" %}
  Hey {{ customer.name | capitalize }}!
{% else %}
  Hi Buddy!
{% endif %}
```
unless
Like an if conditional, but reversed: this tag executes a block of code if your condition is not met.
Example
```
{% unless product.name == "cool beans" %}
  The beans are not cool.
{% endunless %}
```
Timestamps and Dates
Use these tags to get and manipulate dates and times.

add_day

Adds a day, or multiple days, to a given timestamp.

Syntax

{{ <unix_timestamp> | add_day: <int_days> }}

Example

{{ 1477430251 | add_day: 7 }}

add_month

Adds a month, or multiple months, to a given timestamp.

Syntax

{{ <unix_timestamp> | add_month: <int_months> }}

Example

{{ 1477430251 | add_month: 7 }}

add_year

Adds a year, or multiple years, to a given timestamp.

Syntax

{{ <unix_timestamp> | add_year: <int_years> }}

Example

{{ 1477430251 | add_year: 4 }}

countdown

Creates a countdown timer in your message, helping you alert your audience to how soon an event they’re interested is set to happen. Countdown timers take several parameters. At the minimum, a countdown must include the font size, the foreground (font) color, the background color, and the time you want to count down to.

Parameter	required	format	default	description
point	✓	integer		The font size for the timer
time	✓	ISO 8601 timestamp		The date and time you want to countdown to in the format `YYYY-MM-DD hh:mm:ss (TZ)`. Remember to close the time in quotes, as the value includes a space.
fg	✓	hex color		The foreground (font) hexidecimal color
bg	✓	hex color		The background hexidecimal color
apng		boolean	false	Determines whether to show your countdown as a gif (default) or animated PNG. Note that some browsers/email clients don’t support apng images.
font		string	inter, roboto	The font family for your timer
weight		string	normal	The font weight, takes normal CSS `font-weight` values.
locale		language code	en	The language you want to display: `en` (English), `ru` (Russian), `jp` (Japanese), `zh` (Chinese), `pt` (Portugese), `es` (Spanish), and `fr` (French)
looping		boolean	false	Determines whether the countdown timer should restart after it finishes
resolution		one of S, M, H, D	S	Determines how often the timer counts down—by the second, minute, hour, or day.
frames		integer	1	Number of seconds you want to show, based on the resolution, where seconds: 60, minutes: 2, hours: 1, days: 1

Example{% countdown point:64 font:roboto weight:light fg:000000 bg:f2f6f9 time:"2022-07-04 12:00:00 (GMT)" locale:en looping:true resolution:S frames:2 %}

date
Format a date. Use the Ruby syntax reference for more information about date formatting syntax.
Input
```
{{ 1483272000 | date: '%H:%M, %a, %b %d, %Y'}}
```
Output
```
12:00, Sun, Jan 01, 2017
```
event_timestamp
The UNIX timestamp when a particular event was performed. This time is different from now!
Syntax
```
{{event_timestamp}}
```
now
The current time in UTC. You must format time with date.
To modify date or time with add or subtract filters you must convert now into a unix timestamp first using date: '%s'. If you use our built in add_day, add_month, or add_year filters, you must convert the timestamp to an integer first. You can do this by using the plus filter to add 0 as shown in the second example below.
Example
```
{{ 'now' | date: '%I:%M %p %B %d, %Y' }}
{{ 'now' | date: '%s' | plus: 0 | add_day: 1 | date: '%I:%M %p %B %d, %Y'}}
```
Output
```
08:28 AM May 11, 2021
08:28 AM May 12, 2021
```

subtract_day

Subtracts a day, or multiple days, to a given timestamp.

Syntax

{{ <unix_timestamp> | subtract_day: <int_days> }}

Example

{{ 1477430251 | subtract_day: 7 }}

subtract_month

Subtracts a month, or multiple months, to a given timestamp.

Syntax

{{ <unix_timestamp> | subtract_month: <int_months> }}

Example

{{ 1477430251 | subtract_month: 2 }}

subtract_year

Subtracts a year, or multiple years, to a given timestamp.

Syntax

{{ <unix_timestamp> | subtract_year: <int_years> }}

Example

{{ 1477430251 | subtract_year: 4 }}

timezone
Converts a timestamp to a timezone you specify. You can use now instead of a timestamp. Timezone inputs can be -3 (specify your number) or UTC
Example
```
{{ 1483272000 | timezone: '-8' | date: '%H:%M, %a, %b %d, %Y'}}
```
Output
```
04:00, Sun, Jan 01, 2017
```
Array Filters
Liquid used to filter and manipulate arrays (lists of values). If your event or another incoming value is an array, you may iterate over the array with a for loop or grab items at a particular index of the array, to display information for your audience.

compact

Removes nil (empty) values from an array.

Input

{{ "mick, keith, nil, Charlie" | compact }}

Output

mick, keith, Charlie

concat

Concatenates arrays, joining them end to end. The resulting array contains all of the elements of both original arrays. concat does not remove duplicate entries unless you also use the uniq filter.

Input{% assign stones = "mick, keith, ronnie, charlie" | split: ", " %} 
{% assign beatles = "john, paul, george, ringo" | split: ", " %} 
{% assign rolling_beatles = stones | concat: beatles %} 
{{ rolling_beatles | join: ", " }}

Output

mick, keith, ronnie, charlie, john, paul, george, ringo

cycle

In a ‘for’ loop, this tag loops through and outputs strings in the order they were passed.

Input<ul>
{% assign customer.characters = ["coyote","bugs","tweety"] %} {% for character in customer.characters %} 
<li class="{% cycle 'odd', 'even' %}">{{ character }}</li> 
{% endfor %}
</ul>

Output<ul> 
  <li class='odd'>coyote</li>
  <li class='even'>bugs</li> 
  <li class='odd'>tweety</li> 
</ul>

first

Returns the first element of the array.

Inputacme.characters = ["Wile E Coyote", "Road Runner"]
{{ acme.characters | first }}

Output

Wile E Coyote

join

Joins the elements of an array with the character passed as the parameter.

Inputacme.characters = ["Wile E Coyote", "Road Runner"] 
{{ acme.characters | join: ', ' }}

Output

Wile E Coyote, Road Runner

last

Returns the last element of the array.

Inputacme.characters = ["Wile E Coyote", "Road Runner"]
{{ acme.characters | last }}

Output

Road Runner

limit

Return a set number of values from an array or string.

Input{% assign beatles = "john, paul, george, ringo" | split: ", " %} 
{{ beatles | limit: 2 | join: ", " }}

Output

john, paul

map

Creates an array of values by extracting the values of a property in an object. You can output your new characters in a ‘for’ loop.

InputArray of objects: [{"name":"coyote"},{"name":"bugs"},{"name":"tweety"}]"
{% assign names = customer.characters | map: 'name' %}

Output

coyote, bugs, tweety

remove

Remove an element from an array. The array can contain objects of any type.

Input{% assign pl = collection.products | remove: collection.products[0] %}
- {{ collection.products.size }}
- {{ pl.size }}

Output- 2 
- 1

size
Returns the number of characters (the size) of a string (in characters) or the number of elements in an array.
Input
```
{{ "That's all, folks!" | size }}
```
Output
```
18
```
sort
Sorts the elements of an array by an attribute of an element in that array. Usually used with a ‘for’ loop. The order of the sorted array is case-sensitive!
Input
```
{% assign beatles = "paul, john, ringo, george" | split: ", " %}

{{ beatles | sort | join: ", " }}
```
Output
```
george, john, paul, ringo
```

sort_natural

Sort the items in an array in case-insensitive order.

Input

{{ "mick, keith, Charlie, Ronnie" | sort_natural }}

Output

Charlie, keith, mick, Ronnie

uniq

Removes duplicate elements in an array.

Input{% assign my_array = '"lions", "tigers", "bears", "bears", "lions"' %}
{{ my_array | uniq | join: ", " }} 

Output

lions, tigers, bears

where

Creates an array including only the objects with a given property value, or any “truthy” value by default. When using where, you provide two items separated by a comma: the key you want to match on and the value you want to match.

InputAll Players:
{% for player in collection.players %} 
  - {{ player.last_name }} 
{% endfor %} 

Baseball Players:
{% assign baseball_players = collection.players | where: "sport", "baseball" %} 
{% for player in baseball_players %} 
  - {{ player.last_name }} 
{% endfor %}

OutputAll Players: 
  - Posey 
  - Lincecum 
  - Montana 
  - Rice 

Baseball Players: 
  - Posey 
  - Lincecum

where_not

Creates an array of items that do not match a given property value, or any “falsey” value by default. When using where_not, you provide two items separated by a comma: the key you want to match on and the value you want to match.

InputAll players: 
{% for player in collection.players %} 
  - {{ player.last_name }} 
{% endfor %} 

Not baseball players: 
{% assign not_baseball_players = collection.players | where_not: "sport", "baseball" %} 
{% for player in not_baseball_players %} 
  - {{ player.last_name }} 
{% endfor %}

OutputAll players: 
  - Posey 
  - Maradona 
  - Montana 
  - Gretzky 
  - Jordan 

Not baseball players: 
  - Maradona 
  - Montana 
  - Gretzky 
  - Jordan 

Number and Currency Filters

These are tags and filters that manipulate incoming number, integer, and timestamp values.

Some tags, like the currency and format_number, take an optional localization parameter, formatting the output for a specific locale. These tags use the format {{ 10 | currency: "en-us" }}, which would output $10.00.

We support the following localization values:

af, ar, az, be, bg, bn, bs, ca, cs, cy, da, de, de-AT, de-CH, de-DE, el, el-CY, en, en-AU, en-CA, en-GB, en-IE, en-IN, en-NZ, en-US, en-ZA, en-CY, en-TT, 
eo, es, es-419, es-AR, es-CL, es-CO, es-CR, es-EC, es-ES, es-MX, es-NI, es-PA, es-PE, es-US, es-VE, et, eu, fa, fi, fr, fr-CA, fr-CH, fr-FR, gl, he, 
hi, hi-IN, hr, hu, id, is, it, it-CH, ja, ka, km, kn, ko, lb, lo, lt, lv, mk, ml, mn, mr-IN, ms, nb, ne, nl, nn, oc, or, pa, pl, pt, pt-BR, rm, ro, ru, 
sk, sl, sq, sr, st, sw, ta, te, th, tl, tr, tt, ug, ur, uz, vi, wo, zh-CN, zh-HK, zh-TW, zh-YUE

abs
Returns the absolute value of a number.
Input
```
{{ 3.14 | abs }}
```
Output
```
3.14
```
ceil
Rounds a number up to the nearest integer.
Input
```
{{ 3.14 | ceil }}
```
Output
```
4
```
currency
Converts an integer to currency. This filter can also take an optional localization parameter to format currency for a specific locale.
Input
```
{{ 10 | currency }}
{{ 123456.78 | currency: "fr" }}
```
Output
```
$10.00
123 456,78€
```
floor
Rounds a number down to the nearest integer.
Input
```
{{ 3.14 | floor }}
```
Output
```
3
```
format_number
Format a number with a delimiter. This filter also takes an optional localization parameter to format a number for a specific locale.
NOTE: This replaces the former number_with_delimeter filter.
Input
```
{{ 10000 | format_number }}
{{ 123456.78 | format_number: "fr" }} 
```
Output
```
10,000
123 456,78
```
random
Generates a random number between 0 and an integer you specify.
Example
```
{% random 100 %}
```
round
Rounds a number up or down to the nearest integer, or to a decimal place you specify.
Input
```
{{ 4.32 | round }} 
{{ 4.32 | round: 1 }}
```
Output
```
4
4.3
```
rounded_currency
Rounds a number into the nearest whole integer and formats it to a currency. For exapmle, You cannot use the locale: option with rounded_currency like you can with the standard currency filter.
Input
```
{{ 3.1415 | rounded_currency }}
```
Output
```
$3
```
to_json
Outputs the json representation of the input. For example, {{ customer | to_json }} sends all your customer data into a JSON variable.
Example
```
{{ customer | to_json }}
```
Math Filters
Filters that perform math operations on incoming number or integer values.
at_least
Limits a number to a minimum value.
Input
```
{{ 41 | at_least: 42 }}
```
Output
```
42
```
at_most
Limits a number to a maximum value.
Input
```
{{ 100 | at_most: 99 }}
```
Output
```
99
```

divided_by

Divides a number by another number.

Input{{ 10 | divided_by: 4 }}
{{ 10 | divided_by: 4.0 }}

Output2
2.5

minus
Subtracts a number from another number.
Input
```
{{ 10 | minus: 1 }}
```
Output
```
9
```
modulo
Returns the remainder of division.
Input
```
{{ 3 | modulo: 2 }}
```
Output
```
1
```
plus
Adds a number to another.
Input
```
{{ 10 | plus: 1 }}
```
Output
```
11
```
times
Multiplies a number by another number.
Input
```
{{ 5 | times: 2 }}
```
Output
```
10
```
String Filters
The following filters manipulate strings in templates. You might use these to truncate or set the case of strings you reference from other places, to humanize your messages for recipients.

append

Adds a string to the end of another string.

Input

{{ "What's all the hubbub, " | append: "bub?" }}

Output

What's all the hubbub, bub?

base64

Base64-encodes a string.

Input

{{ 'Hello, world!' | base64 }}

Output

SGVsbG8sIHdvcmxkIQ==

base64_decode
Decode a base64-encoded string.
Input
```
{{ "Zm9vLmJhcg==" | base64_decode }}
```
Output
```
foo.bar
```

base64_encode

Base64-encode a value.

Input

{{ "foo.bar" | base64_encode }}

Output

Zm9vLmJhcg==

base64_url_safe_decode
Decode a string from URL-safe Base64.
Input
```
{{ "Zm9vLmJhcg" | base64_url_safe_decode }}
```
Output
```
foo
```
base64_url_safe_encode
Encode a string into URL-safe Base64. To produce URL-safe Base64, this filter uses - and _ in place of + and /.
Input
```
{{ "foo" | base64_url_safe_encode }}
```
Output
```
Zm9vLmJhcg
```
capitalize
Capitalize the first character in a string.
Input
```
{{ "hello world" | capitalize }}
```
Output
```
Hello world
```
contains
Finds a substring inside a string, or the presence of a string in an array of strings. This filter only works with strings; you cannot use it to search for an object in an array of object.
Syntax
```
{% if product.description contains 'lorem ipsum' %}
  You might also be interested in Fillerama or Office Ipsum.
{% endif %}
```

downcase

Converts a string to lower case.

Syntax

{{ 'STRING' | downcase }}

Input

{{ "ACME" | downcase }}

Output

acme

escape
Escaping (or encoding) a string removes special characters.
Input
```
{{ "win+help@customer.io" | escape }}
```
escape_once
Escapes or encodes a string, but doesn’t include already-escaped characters.
Input
```
{{ "1 < 2 & 3" | escape_once }}
```
Output
```
1 < 2 & 3
```
hex_base64
Returns a base64 encoding of a hex digest, like ones returned by the hmac_sha256 filter.
Input
```
{{ "Customer.io" | hmac_sha256: "some_key" | hex_base64 }}
```
Output
```
bd23cyOCFrzicxM7w/ahKoJPQd0YTQlFLwXHZZ2ufVc=
```

hmac_sha1

Converts a string into an hmac_sha1 hash.

Input

{{ "Customer.io" | hmac_sha1: "some_key" }}

Output

2bdf556c9a75766f258d1e2824f6d0e31d1beedc

hmac_sha256

Converts a string into an hmac_sha256 hash.

Input

{{ "Customer.io" | hmac_sha256: "some_key" }}

Output

6dddb773238216bce273133bc3f6a12a824f41dd184d09452f05c7659dae7d57

htmlencode
Escapes HTML characters into HTML entities.
lstrip
Strips all whitespace, including tabs, spaces, and newlines, from the left side of a string.
Input
```
text{{ " Customer.io " | lstrip }}text
```
Output
```
textCustomer.io text
```

md5

Converts a string into an md5 hash.

Input

{{ "Customer.io" | md5 }}

Output

d52b6a207bf5255c05b1d0056230617e

newline_to_br
Replaces newline with an HTML line break. input: See this example for output.
Input
```
<br />
Customer.io<br />
liquid<br />
```
pluralize
Outputs the singular or plural version of a string based on the value of a number. The first parameter is the singular string and the second parameter is the plural string.
Syntax
```
{{ int-val | pluralize 'singular', 'plural'}}
```
Input
```
{{ event.item_count | pluralize: 'item', 'items' }}
```
Output
```
3 items
```

prepend

Adds a string to the beginning of another string.

Input

{{ "Sufferin' succotash!" | prepend: "Sylvester: " }}

Output

Sylvester: Sufferin' succotash!

remove_first

Removes the first occurrence of a value from a string.

Input

{{ "folks that's all, folks!" | remove_first: "folks" }}

Output

that's all folks!

remove_last
Remove the last occurence of a string within a substring.
Input
```
{{ "foobarbar" | remove_last: "bar" }}
```
Output
```
foobar
```

replace

Find and replace values within a string. The first argument represents the value you want to replace, and the second argument is the replacement.

Syntax{{ "String you want to replace values in" | replace: "find-str", "replace-str" }}

Input

{{ "Coyotes never catch roadrunners!" | replace: "never", "always" }}

Output

Coyotes always catch roadrunners!

replace_first

Find and replace the first match in a string. The first argument represents the value you want to replace, and the second argument is the replacement.

Syntax{{ "String you want to replace values in" | replace_first: "find-str", "replace-str" }}

Input

{{ "roller rocket roller skates" | replace_first: "roller", "awesome" }}

Output

awesome rocket roller skates

replace_last
Replace the last occurence of a string within a substring.
Input
```
{{ "foobarbar" | replace_last: "bar", "foo" }}
```
Output
```
foobarfoo
```
rstrip
Strips all whitespace, including tabs, spaces, and newlines, from the right side of a string.
Input
```
text{{ " Customer.io " | rstrip }}text
```
Output
```
text Customer.iotext
```

sha1

Converts a string into a sha1 hash.

Input

{{ "Customer.io" | sha1 }}

Output

c197ff0ae0a41983362f35ca972c544061c54d4c

sha256

Converts a string into a sha256 hash.

Input

{{ "Customer.io" | sha256 }}

Output

6dddb773238216bce273133bc3f6a12a824f41dd184d09452f05c7659dae7d57

slice
Returns the character located at the index specified in the first argument. You can also provide a second argument indicating the length of the string you want to return (if you want to return multiple characters).
If the first argument is a negative number, the index is begins from the end of the string.
Syntax
```
{{ "string" | slice: <req, index of char>, <optional, length of result> }}
```
Input
```
{{ "Customer.io" | slice: 3 }}
{{ "Customer.io" | slice: 3, 3 }}
{{ "Customer.io" | slice: '-4', 3 }}
```
Output
```
t
tom
r.i
```

split

Divides an input string into an array using a separator you define. This filter is often used with a for loop.

Input{% assign rolling_stones = "Mick, Keith, Ronnie, Charlie" | split: ", " %}

{% for member in rolling_stones %}
  {{ member }}
{% endfor %}

remove

Removes a value from a string.

Input

{{ "And that's all, folks!" | remove: ", folks" }}

Output

And that's all!

strip
Strips all whitespace, including tabs, spaces, and newlines, from the left and right side of a string.
Input
```
text{{ " Customer.io " | strip }}text
```
Output
```
Customer.io
```

strip_html

Removes HTML characters from a string.

Input

{{ "Eh, what's <i>up</i>, <b>Doc</b>?" | strip_html }}

Output

Eh, what's up, Doc?

strip_newlines
Removes line breaks (\n) from a string.
Example
```
{{ product.description | strip_newlines }}
```

titlecase

Converts a string to title case.

Syntax

{{ 'string' | titlecase }}

Input

{{ "rocket roller skates" | titlecase }}

Output

Rocket Roller Skates

truncate
Shortens a string to the specified number of characters, adding an ellipsis if the string is longer than the value provided.
Input
```
{{ "I knew I shoulda taken that left turn at Albuquerque." | truncate: 20 }}
```
Output
```
I knew I shoulda ...
```
truncatewords
Shortens a string to a specified number of words, rather than characters, and adds an ellipsis if the string contains more words than the value provided.
Input
```
{{ "I knew I shoulda taken that left turn at Albuquerque." | truncatewords: 8 }}
```
Output
```
I knew I shoulda taken that left turn...
```
upcase
Converts a string to upper case.
Syntax
```
{{ 'string' | upcase }}
```
Input
```
{{ 'acme' | upcase }}
```
Output
```
ACME
```
url_decode
Decodes a string that has been encoded as a URL or has been modified by url_encode.
Input
```
{{ "%27Customer.io+is+great%27" | url_decode }}
```
Output
```
Customer.io is great
```

url_encode

Escapes/encodes URL-unsafe characters in a string.

Input

{{ "cool.person@example.com" | url_encode }}

Output

cool.person%40example.com

Miscellaneous
These are tags that you can use to escape liquid rendering or escape rendering all together.
comment
This tag doesn’t show its contents, providing a way for you to leave notes inside templates for other members of your organization.
Syntax
```
{% comment %} Don't display me! {% endcomment %}
```
generate_uuid
Generate a UUID.
Example
```
{% generate_uuid %}
```
raw
Temporarily disables Liquid processing. You might use this to escape tag processing if you use a conflicting syntax or you want to show raw liquid syntax in your message."
Example
```
{% raw %}
  {{This}} is displayed exactly as typed.
{% endraw %}
```

Latest features at Customer.io

Message limits with automatic retries

Objects: a new way to group people together

Build a subscription center the easy way

Liquid tag list

Customer.io Tags

campaign.id

Syntax

campaign.name

Syntax

campaign.type

Syntax

content

Example

delivery_id

Syntax

event_name

Syntax

layout.id

Syntax

layout.name

Syntax

message.id

Syntax

message.journey_id

Syntax

message.name

Syntax

message.subject

Syntax

message.type

Syntax

unsubscribe_url

Syntax

view_in_browser_url

Syntax

Variables and Assignment

assign

Syntax

Input

Output

capture

Input

Output

customer attributes

Syntax

Example

event properties

Syntax

Example

trigger properties

Syntax

Example

Logical Operators

and

Syntax

Example

Does not equal (!=)

Example

equals (==)

Example

Greater than and Greater than or equal to (>, >=)

Syntax

Example

Less than and less than or equal to (<, <=)

Syntax

Example

or

Syntax

Example

Loops and Conditionals

case

Syntax

for loop

Syntax

Example

if

Example

unless

Example