How can you detect if a website uses Svelte?
Detecting whether a website is built using Svelte involves inspecting its page source and looking for specific indicators that are characteristic of Svelte applications.
Here’s a step-by-step guide on how to do it:
- Open the Page Source: Right-click on the webpage and select “View Page Source” or press
Ctrl+U
(Windows) orCmd+Option+U
(Mac) to open the page’s source code. - Search for Svelte-Specific Markers: Use
Ctrl+F
(Windows) orCmd+F
(Mac) to open the search function and look for the following keywords:svelte
: Look for instances ofsvelte:
in the source code, which indicates Svelte components. Example:<script context="module">...</script>
__svelte__
: This is a common variable name that can indicate Svelte’s presence in the JavaScript.svelte-
: Class names that start withsvelte-
are often generated for styling components.
- Check for Svelte Script Tags: Look for script tags that may directly reference Svelte. For example:
<script src="/build/bundle.js"></script>
where the bundle filename could indicate the use of Svelte. - Look for Svelte’s Hydration Markup: Svelte applications often contain markup that is delivered as pre-rendered HTML for hydration. Check for elements with
data-svelte-h
attributes. - Inspect the JavaScript Files: Look for references to Svelte in linked JavaScript files. You might see comments or other indicators like
import { onMount } from 'svelte';
. - Examine Component Structure: If you inspect elements on the page (using right-click → “Inspect” or
F12
), you may notice that components have unique attributes or organization typical of Svelte applications. - Check Network Requests: Open your browser’s developer tools and go to the “Network” tab. Reload the page and look for file requests that include
.svelte
or similar indicators which suggest that Svelte components are being requested.