Fingerprint — Svelte

Integrate Fingerprint into a Svelte / SvelteKit app to identify visitors: initialize the provider once at startup, then ask it for the visitor's visitor_id and a single-use event_id wherever you need it (on load, or on an action like login or checkout).

Docs: https://docs.fingerprint.com/docs/svelte · JS Agent v4: https://docs.fingerprint.com/reference/js-agent-v4

Package

@fingerprint/svelte — install the latest version. (For plain HTML or an unsupported framework, use @fingerprint/agent instead.)

Env var

• FINGERPRINT_PUBLIC_API_KEY — the public key, safe to ship to the browser.

Bundlers only expose prefixed vars to client code — map the key to the bundler's convention:

• Vite (plain Svelte): VITE_FINGERPRINT_PUBLIC_API_KEY → import.meta.env.VITE_...
• SvelteKit: PUBLIC_FINGERPRINT_PUBLIC_API_KEY → import { PUBLIC_FINGERPRINT_PUBLIC_API_KEY } from '$env/static/public' Only PUBLIC_-prefixed vars reach the browser in SvelteKit. Never expose the secret key.