Web technology footprints
Source-query totals for 17 technologies, with the original data and queries.
The grep for the entire web
Find every site running a snippet, script, tracking ID, or framework, by exact string or full regex. Verified against the raw HTML, ranked by popularity, with the full source of every match.
Signature library
Explore a technology’s footprint in stored homepage source.
8 featured technologies
What you can find
If it's in the HTML, JS, or CSS a site ships, it's searchable, lead lists, competitive intel, tech-stack mapping, security signatures, all from one string.
Every site running a specific theme, plugin, framework, or CMS.
Find sites sharing a Google Analytics or ad-network account, with regex.
Who's using Stripe, Intercom, Segment, a specific SDK or pixel.
Every site loading a known-bad script or an outdated library version.
From the index
Reports built from the index, and guides for the searches people run most.
Source-query totals for 17 technologies, with the original data and queries.
7 source fingerprints, including Analytics, Tag Manager and Meta Pixel.
More guides
Search for the plugin's asset folder in homepage HTML.
wp-content/plugins/woocommerceCombine the Shopify and Klaviyo script URLs in one search.
"cdn.shopify.com" "static.klaviyo.com"Find a shared ID, then check the source before attributing ownership.
GTM-LQCSFind a website by GA ID: search GA4 measurement IDs or legacy Analytics web property IDs, inspect matching homepage source and check related domains.
Oct 20, 2026Search a Meta Pixel ID in captured homepage HTML. Check the surrounding code before drawing conclusions about the sites' relationship.
Oct 15, 2026Search for script URLs, asset paths and other text in stored homepage HTML. Learn how to read results and inspect the matched source.
Oct 15, 2026Use regular expressions to find tracking IDs, versioned script URLs and other code patterns. Try the queries and inspect their matches.
Oct 15, 2026Combine and exclude source fingerprints to build a domain list. Inspect captured matches and export the results for further research.
Oct 15, 2026Why it's different
| SearchWebCode | PublicWWW | NerdyData | BuiltWith | |
|---|---|---|---|---|
| What it does | regex-search real page source | search site homepages | search page source | detect a site's tech |
| Unique domains | 131M+ | not disclosed | not disclosed | - |
| Pages / profiles | 1 per domain (homepage) | ~517M pages | tens of millions of pages | tech profiles, not source |
| Regex search | ✓ full regex | ✓ full regex | partial | ✗ |
| Full page source per match | ✓ whole source | ✗ snippet | ✗ snippet | ✗ |
| Last updated | monthly · August 2026 | infrequent | varies | varies |
| Pricing | from $15 / mo or $0.05 / search | from $109 / mo, up to $499 | up to $3,000 / mo | up to $995 / mo |
Pay only for the searches you run.
Index every page on the domains you need.
Search a growing index of website source code, exact-string or full regex, full matched source, and pay only for the searches you run.