Google Analytics Cookieless

You want to add Google Analytics tracking to your website but do no want to use the GA cookie which comes along ? You have a simple site and you don't want to display the annoying cookie banner just for Analytics tracking ?

This module allows you to collect statistics about your visitors via Google Analytics without having to set the GA cookie on your website.

Features

• Google Analytics tracking without GA cookie
• Single domain tracking
• Anonymize visitors IP address (by default)
• Selectively track/exclude certain pages
• Track / Do not track logged in users

How it works

When calling the Google Analytics code snippet, this module deactivates the cookie storage and generate a user ID by using a browser Fingerprint with the Fingerprintjs2 library :

Fingerprint2.get(function (components) {
    var values = components.map(function (component) {
        return component.value;
    });
    var murmur = Fingerprint2.x64hash128(values.join(''), 31);
    ga('create', drupalSettings.google_analytics_cookieless.ga_account, {
        'storage': 'none',
        'clientId': murmur
    });
    ga('set', 'anonymizeIp', drupalSettings.google_analytics_cookieless.ga_anonymise_ip);
    ga('send', 'pageview');
})

Installation

The installation of this module requires the eternal library FingerPrintJS.

First enable the Drupal module like any other modules.

1. Copy/upload the google_analytics_cookieless module to the modules directory of your Drupal
installation.

2. Enable the 'Google Analytics Cookieless' module in 'Extend'.
(/admin/modules)

3. You can use composer to download and install the FingerprintJS library.

a. For this you have to add to your composer.json file the following repository:

  "repositories": [
    {
      "type": "composer",
      "url": "https://packages.drupal.org/8"
    },
    {
          "type": "package",
          "package": {
            "name": "valve/fingerprintjs2",
            "version": "2.1.0",
            "type": "drupal-library",
            "extra": {
              "installer-name": "fingerprintjs"
            },
            "source": {
              "url": "https://github.com/Valve/fingerprintjs2",
              "type": "git",
              "reference": "2.1.0"
            }
          }
    }

b. Then add the library as a required composer package :

composer require --prefer-dist valve/fingerprintjs2

Otherwise (not recommended) you could download the library from https://github.com/Valve/fingerprintjs2
and place the following file fingerprint2.js under the libraries/fingerprintjs folder.

c. The complete path of the file should be : libraries/fingerprint/fingerprint2.js

To configure the module go to /admin/config/system/google-analytics-cookieless.

Similar modules

The Google Analytics module has more features but does not come (yet) with a Cookieless feature.

Configuration

FingerprintJS library does not come with a minified version by default. It is possible to use a CDN version or to build a compiled one with npm/yarn.
See : https://github.com/Valve/fingerprintjs2/issues/504

On a Drupal website, you can just enable JS aggregation on the performance page (admin/config/development/performance).