Search the source code of the web.

Find the sites whose HTML, scripts or response headers contain a snippet: a theme path, a tracking ID, a library, a server version.

4,586 pages from 4,375 sites, last crawled 9 hours ago. Press / to search from anywhere. Query syntax

Every byte of a page is searchable

Pages are stored the way they came over the wire: status line, headers, then the HTML. Each of these queries finds the page below, through a different part of it.

HTTP/1.1 200 OK
Server: nginx/1.25.3
Content-Type: text/html; charset=UTF-8
X-Powered-By: PHP/8.3.4
<!doctype html>
<html lang="en-US">
<head>
<meta name="generator" content="WordPress 6.6.2">
<link rel="stylesheet" href="/wp-content/themes/astra/assets/css/minified/main.min.css">
<script async src="https://www.googletagmanager.com/gtag/js?id=G-4XK2WQ8M1Z"></script>
<!-- Cached page generated by WP-Super-Cache -->

Run this query

Or start from a technology

No code to know: pick a product and see every site that runs it.

Or look up one site

Its technologies, tracking IDs, contacts, and who links to it.

Questions people answer with it

Most popular first

Results are ordered by the site's rank in a list of popular sites, so the first page shows who uses it.

Homepages by default

Only homepages are searched unless you ask. Add depth:all to include inner pages.

Exact, not fuzzy

A phrase matches as written, punctuation included. Only letter case is ignored.