How to Add a Floating CTA Button to SvelteKit

SvelteKit's root layout file (+layout.svelte) wraps every page, making it the ideal place for a site-wide floating CTA button. Design your button with the generator, export the code, and add it to your layout in seconds.

Why Add a CTA Button to SvelteKit?

SvelteKit compiles components at build time, producing minimal runtime overhead — and a pure HTML + CSS CTA button adds exactly zero JavaScript to that equation. For content sites, blogs, and apps built with SvelteKit, placing a floating button in the root layout is the simplest way to add a persistent call-to-action that works with SSR, prerendering, and client-side navigation equally well.

Step-by-Step Instructions

Design your CTA button

Open the CTA Button Generator and customize your button using the visual editor. Pick colors, position, animation, hover effects, icon, and font. The live preview updates in real time so you see exactly what your visitors will get.

Export your code

When you are happy with the design, click "Get Code" to export a clean HTML + CSS snippet. The code is lightweight, has zero dependencies, and works on any website.

Create a CtaButton component

Create a new file at src/lib/components/CtaButton.svelte. Paste the HTML and add the CSS in a <style> block.

<!-- src/lib/components/CtaButton.svelte -->
<!-- paste your CTA HTML here -->

<style>
/* paste your CTA styles here */
</style>

Add to your root layout

Open src/routes/+layout.svelte and import the CtaButton component. Render it after the <slot /> to show it on every page.

<script>
  import CtaButton from '$lib/components/CtaButton.svelte';
</script>

<slot />
<CtaButton />

Run and verify

Start your dev server with npm run dev and navigate to any page. The floating CTA button should appear.

Best Practices for SvelteKit

Place the component after the <slot /> in +layout.svelte so it renders after the page content in the DOM.
Use Svelte's scoped styles within the component to keep button styles isolated from the rest of your app.
Since the button is pure HTML + CSS, there's no need for onMount or any lifecycle hooks — keep the component as simple as possible.
If you use SvelteKit's prerendering, the button will be included in the static HTML output automatically.

Ready to build your button?

Design it visually, export clean code, and paste it into your site.

Open the Generator

Frequently Asked Questions

Does it work with SvelteKit's SSR?

Yes. The CTA button is pure HTML + CSS, so it renders on the server and hydrates without issues.

Can I use it with plain Svelte (without SvelteKit)?

Yes. Create the same component and include it in your App.svelte or paste the code into your index.html.

Will the button survive SvelteKit's client-side navigation?

Yes. Since the button is in the root +layout.svelte, it persists across all client-side navigations and is never unmounted.

Can I animate the button with Svelte's built-in transitions?

Yes. You can wrap the button element with Svelte's transition directives like transition:fly or transition:fade for entrance animations when the page loads.

How to Add a CTA Button to SvelteKit