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Is This Website Built With SvelteKit?

Paste any URL below. Our scanner checks 5 SvelteKit-specific fingerprints — scripts, CDN domains, HTML attributes, and HTTP headers — and returns a confidence score instantly.

How to Tell if a Website Uses SvelteKit

Identifying whether a website was built with SvelteKit used to require technical expertise — inspecting source code, tracing network requests in DevTools, and knowing which patterns to look for. Our free scanner automates all of that: it fetches the page, analyzes 5 SvelteKit-specific signals, and returns a verdict with a confidence score.

You might want to detect SvelteKit for competitive research, due diligence before acquiring a site, or simple curiosity. Whatever the reason, this page covers every method — automated and manual.

What is SvelteKit?

SvelteKit is the official Svelte application framework with file-based routing and server-side rendering. Sites use the _app/immutable path for JavaScript chunks and contain data-sveltekit attributes. Known for small bundle sizes and excellent performance.

It is primarily used for powering websites built by developers using AI coding assistants or modern JavaScript frameworks.

Visit SvelteKit official website

Signs a Website Is Built With SvelteKit

Our detection engine checks 5 unique SvelteKit fingerprints. Here are the most reliable signals:

High Confidence

JavaScript / Script Files

SvelteKit loads specific JavaScript runtime files or loads scripts from identifiable URLs. Checking script src attributes reveals the platform.

__sveltekitsvelte
Medium Confidence

HTML Attributes & Class Names

SvelteKit injects proprietary class names, data attributes, or markup patterns into the page HTML that are unique to the platform.

data-sveltekitsvelte-_app/immutable

How to Manually Detect SvelteKit Websites

Method 1 — View Page Source

  1. Open the website in your browser
  2. Press Ctrl+U (Windows) or Cmd+Option+U (Mac)
  3. Search (Ctrl+F) for sveltekit or sveltekit
  4. If found in script src, class names, or meta tags — it's likely SvelteKit

Method 2 — Browser DevTools Network Tab

  1. Press F12 to open DevTools
  2. Click the Network tab and reload the page
  3. Filter by sveltekit in the search box
  4. If you see requests to SvelteKit-specific domains, it's confirmed
Faster: Skip the manual steps — paste the URL into our scanner above and we check all 5 signals in seconds.

How Our SvelteKit Detector Works

When you submit a URL, our engine fetches the page from its server — just like a browser would — then analyzes the response across 5 SvelteKit-specific fingerprints:

Script analysis

We scan all loaded JavaScript files for known CDN paths and runtime names

CDN domain matching

We cross-reference every asset request against known platform CDNs

HTML pattern scanning

We search the DOM for platform-specific class names and data attributes

Header inspection

We read HTTP response headers that identify the server or platform

Meta tag extraction

We check generator and other meta tags in the document head

Confidence scoring

We weight each matched signal and normalize to a 0–99% score

How to Build a Similar Website With SvelteKit

SvelteKit is a developer tool. To build a site with it, install it via npm/yarn, initialize a project, and follow the official documentation at https://kit.svelte.dev.

Other popular frameworks and coding tools include Next.js, Astro, SvelteKit, Remix, and Gatsby.

Get started with SvelteKit

Frequently Asked Questions

How can I tell if a website was built with SvelteKit?

The most reliable ways to detect SvelteKit are: (1) open DevTools → Network tab and look for requests to SvelteKit-specific CDN domains, (2) view page source and search for SvelteKit-specific class names or data attributes, (3) use our free scanner — we check 5 detection signals automatically and return a confidence score.

Is your SvelteKit detector free?

Yes, completely free. Paste any URL into our scanner and we'll analyze it for SvelteKit fingerprints immediately. No account required, no limits on scans.

How accurate is the SvelteKit detection?

We check 5 unique SvelteKit fingerprint signals across HTML, JavaScript, CDN domains, meta tags, and HTTP headers. Our confidence score reflects how many signals matched — a score above 70% is a strong indicator. We cap accuracy at 99% to reflect that all fingerprint-based detection is probabilistic.

Can SvelteKit sites be detected if they use a custom domain?

Yes. Custom domains don't hide the underlying platform. The JavaScript files, CDN requests, HTML attributes, and server headers all remain identifiable regardless of the domain name used. Our scanner fetches the page directly and analyzes its technical composition.

What should I do after detecting a SvelteKit website?

If you want to build something similar, visit https://kit.svelte.dev to learn more or sign up. If you're doing competitive research, our scan result also shows the full technology stack — including hosting platform, domain age, and other detected technologies. You can share the result link with your team.