How to add Klaviyo to your website
Klaviyo is an email and SMS platform built around ecommerce data, used by online stores and product businesses with meaningful order volume. Here's how to put it on your own website, which embed option to pick, and what goes wrong.
Quick answer
Get the code from your Klaviyo account under Signup Forms, where forms are built and given an embed or script. For most people the right choice is the embedded form — a form placed in a specific spot on your page. Paste it into a code or embed block on your site — not a plain text field — then place it beside your main call to action and test the whole flow on a phone before relying on it.
Klaviyo: which option to use
| Option | What it does |
|---|---|
| Embedded form | A form placed in a specific spot on your page. |
| Popup or flyout | Triggered by behaviour, exit intent or time. |
| Full onsite script | Klaviyo's tracking script, which powers behavioural targeting. |
Step-by-step
- 1
Find the code or link in your account
Klaviyo keeps this in your Klaviyo account under Signup Forms, where forms are built and given an embed or script. Copy what you need before touching your website — most of the time people lose is spent hunting for the snippet, not installing it.
- 2
Pick the right option for the job
The table above is the decision. Embedded form: A form placed in a specific spot on your page. Popup or flyout: Triggered by behaviour, exit intent or time. Choosing before you paste saves rebuilding the section later.
- 3
Paste it into a code or embed block
This needs an HTML, code or embed block — not a plain text field, where the code will simply appear as text on your page. On Adviita, ask the AI editor to add an embed section and drop the code in. On WordPress use a Custom HTML block, on Squarespace a Code block (Business plan or above), and on Wix an Embed HTML element.
- 4
Put it where the decision happens
An email list is the only audience you own outright — no algorithm sits between you and it. A widget three scrolls down does a fraction of the work of the same widget beside your main call to action. Decide what the page is for, then place it at the point the visitor is deciding.
- 5
Check it on an actual phone
Most visitors to a small business website arrive on a phone, and embeds are where mobile layouts break. Open your live site on your own phone and confirm it loads, fits the screen without sideways scrolling, and does not push your contact button out of view. Third-party embeds are also the most common cause of a slow page, so if it noticeably delays loading, consider a plain link instead.
- 6
Test it end to end before you rely on it
Run through the whole flow yourself as a customer would — submit a real entry — and confirm what should happen actually happens. Broken embeds fail silently, and the first person to notice is usually a customer who has already given up.
Tips & best practices
- ▸Klaviyo is priced for ecommerce volume and is expensive for a small service business. It is the wrong tool below a certain scale.
- ▸Its value comes from behavioural data — abandoned carts, purchase history. Without a store feeding it, you are paying for capability you cannot use.
- ▸The onsite tracking script has privacy and consent implications; configure it alongside your consent banner.
- ▸Re-test the embed after any change to your site, your plan, or the connected account — third-party widgets break quietly and nothing tells you.
Common questions
Is Klaviyo worth it for a small business?
+−
Only if you run an online store with real order volume. Its strength is behavioural automation driven by purchase data — abandoned carts, replenishment reminders, segmenting by what people bought. A service business without a store is paying premium pricing for features it cannot use.
How do I add a Klaviyo signup form to my site?
+−
Build the form in Klaviyo's signup forms section, then add Klaviyo's onsite script to your site so forms can display and behaviour can be tracked. Embedded forms also get a specific placement snippet. Configure this alongside your cookie consent, since the tracking script needs consent handling.
Do I need a developer to add Klaviyo to my site?
+−
No. Every option here is copy and paste into a code or embed block, which every mainstream website builder provides. The only genuine blocker is a builder or plan that does not allow custom code at all — Squarespace, for instance, requires a Business plan or above for code blocks.
Will adding Klaviyo slow down my website?
+−
Any third-party embed has some cost, because it loads code from another company's servers. One is usually unnoticeable; four or five on the same page is where small business sites become visibly slow. If page speed matters to you, prefer a plain link over a script wherever the option exists, and keep embeds to the pages that genuinely need them.