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Popular Platforms

Step-by-step installation instructions for the most common website platforms. Find your platform below and follow the guide for it.

Info
Replace YOUR_SNIPPET_KEY in all examples below with your actual snippet key from Project Settings → Snippet.

WordPress

There are two recommended ways to install the snippet on WordPress. The plugin method is easier and does not require editing theme files.

Method 1 — Using a plugin (recommended)

1

Install the 'Insert Headers and Footers' plugin

In your WordPress admin, go to Plugins → Add New. Search for “Insert Headers and Footers” and install the plugin by WPBeginner. Activate it.
2

Open the plugin settings

Go to Settings → Insert Headers and Footers.
3

Paste the snippet

In the Scripts in Header box, paste your A vs B snippet tag. Click Save.

Method 2 — Editing header.php

1

Open the theme editor

In your WordPress admin, go to Appearance → Theme File Editor (or Appearance → Editor on newer WordPress versions). If you do not see this menu, your host may have disabled it — use the plugin method instead.
2

Open header.php

In the file list on the right, click on header.php. This is the file that outputs the <head> section of your theme.
3

Paste the snippet

Find the opening <head> tag and paste your snippet tag right after it — as early as possible. Click Update File.
Child themes
If you edit a parent theme's header.php directly, your changes will be overwritten when the theme updates. Use a child theme or the plugin method to make your changes permanent.

Shopify

1

Go to your theme editor

In your Shopify admin, go to Online Store → Themes. Next to your active theme, click the ... menu and select Edit code.
2

Open theme.liquid

In the file browser on the left, find Layout → theme.liquid and click to open it. This file wraps every page in your Shopify storefront.
3

Paste the snippet

Find the opening <head> tag. Paste your A vs B snippet tag on the very next line, before any other scripts.
4

Save

Click Save. Your snippet is now live on your Shopify storefront.
theme.liquid example
html
1<head>
2  <!-- A vs B snippet -->
3  <script
4    id="avsb"
5    src="https://cdn.avsb.cloud/snippet.js?id=YOUR_SNIPPET_KEY"
6  ></script>
7

8  {{ content_for_header }}
9  ...

Webflow

1

Open Project Settings

In the Webflow Designer, click the W logo in the top left to open the menu, then go to Project Settings.
2

Go to the Custom Code tab

Click the Custom Code tab in Project Settings.
3

Paste in the Head Code section

In the Head Code box, paste your A vs B snippet tag. This code is injected into the <head> of every page in your Webflow project.
4

Save and publish

Click Save Changes, then publish your site. The snippet will only be active on the published site, not in the Webflow Designer preview.

Squarespace

1

Open Settings

Log in to your Squarespace account. Go to Settings → Advanced → Code Injection.
2

Paste in the Header section

In the Header text area, paste your A vs B snippet tag. Squarespace injects everything in this box into the <head> of all pages.
3

Save

Click Save. Your snippet is now active.
Squarespace plan requirement
Code Injection is only available on Business and Commerce plans. It is not available on the Basic plan.

Wix

1

Open Settings in your Wix dashboard

Go to your Wix site's dashboard and click Settings in the left menu.
2

Go to Custom Code

Under the Advanced section, click Custom Code.
3

Add new custom code

Click + Add Custom Code. Paste your A vs B snippet tag in the code box.
4

Configure placement

Set Place Code in to Head. Set Add Code to Pages to All Pages (or choose specific pages if needed).
5

Apply and publish

Click Apply, then publish your site. Your snippet is now live.