Meta Pixel

Advanced Matching

This document explains how to manually implement advanced matching for tracked conversion events using the Meta Pixel.

Please visit the Privacy and Data Use Guide to learn what data is sent when using the Meta Pixel.

To automatically implement advanced matching use the Events Manager.

Implementation

To use advanced matching, format the visitor's data as a JSON object and include it in the pixel base code fbq('init') function call as a third parameter.

Be sure to place advanced matching parameters in the pixel base code or the values will not be treated as manual advanced matching values.

For example, if your pixel ID was 283859598862258, you could do this:

fbq('init', '283859598862258', {
  em: 'email@email.com',         //Values will be hashed automatically by the pixel using SHA-256
  fn: 'first_name',    
  ln: 'last_name'      
  ...
});

Note: We accept both lowercase unhashed and normalized SHA-256 hashed email addresses in your function calls

Sending More Hashed Values

You can use the <img> tag to pass your own visitor data if you format and hash your user data using a SHA-256 hashing algorithm.

The following is an example of passing hashed user email, first name, and last name:

<img height="1" width="1" style="display:none"
src="https://www.facebook.com/tr/?id=PIXEL_ID&ev=Purchase
  &ud[em]=f1904cf1a9d73a55fa5de0ac823c4403ded71afd4c3248d00bdcd0866552bb79
  &ud[fn]=4ca6f6d5a544bf57c323657ad33aae1a019c775518cf4414beedb86962aea7c1
  &ud[ln]=41f3e15ff8a4e4117da46465954304497ef29bdf35afaa9e36d527864d24c266
  &cd[value]=0.00
  &cd[currency]=USD" />

Reference

User DataParameterFormatExample

Email

em

Unhashed lowercase or hashed SHA-256

jsmith@example.com or 6e3913852f512d76acff15d1e402c7502a5bbe6101745a7120a2a4833ebd2350

First Name

fn

Lowercase letters

john

Last Name

ln

Lowercase letters

smith

Phone

ph

Digits only including country code and area code

16505554444

External ID

external_id

Any unique ID from the advertiser, such as loyalty membership ID, user ID, and external cookie ID.

a@example.com

Gender

ge

Single lowercase letter, f or m, if unknown, leave blank

f

Birthdate

db

Digits only with birth year, month, then day

19910526 for May 26, 1991.

City

ct

Lowercase with any spaces removed

menlopark

State or Province

st

Lowercase two-letter state or province code

ca

Zip or Postal Code

zp

String

94025

Country

country

Lowercase two-letter country code

us

Learn More