The grep for the entire web

Search the source code
of every website.

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

Technologies

Explore a technology’s footprint in stored homepage source.

Browse all 101 technologies

8 featured technologies

All technology categories

What you can find

One query. Every site that matches.

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.

"wp-content/themes/divi"

Map a tech stack

Every site running a specific theme, plugin, framework, or CMS.

/UA-[0-9]{4,}-[0-9]/

Track an analytics ID

Find sites sharing a Google Analytics or ad-network account, with regex.

"js.stripe.com/v3"

Find integrations

Who's using Stripe, Intercom, Segment, a specific SDK or pixel.

"/vulnerable-widget.js"

Hunt exposure

Every site loading a known-bad script or an outdated library version.

From the index

Explore the data

Reports built from the index, and guides for the searches people run most.

All guides

More guides

Regex

Regex search over website source code

Use regular expressions to find tracking IDs, versioned script URLs and other code patterns. Try the queries and inspect their matches.

Oct 15, 2026

Why it's different

See the full source, not just a snippet.

Compare with
SearchWebCodePublicWWWNerdyDataBuiltWith
What it doesregex-search real page sourcesearch site homepagessearch page sourcedetect a site's tech
Unique domains131M+not disclosednot disclosed-
Pages / profiles1 per domain (homepage)~517M pagestens of millions of pagestech profiles, not source
Regex search✓ full regex✓ full regexpartial✗
Full page source per match✓ whole source✗ snippet✗ snippet✗
Last updatedmonthly · August 2026infrequentvariesvaries
Pricingfrom $15 / mo
or $0.05 / search
from $109 / mo, up to $499up to $3,000 / moup to $995 / mo
Pay-as-you-go
$0.05 / search
$10 minimum

Pay only for the searches you run.

  • Full page source for every match
  • Regex & TLD filters
  • CSV export & API access
  • Empty results are refunded
Research
Most popular
$12 / mo
Billed $144 a year
  • 400 search credits per month
  • 50,000 export rows per month
  • API access and 25 watched searches
  • Extra search credits: 5¢ from prepaid credit
Pro
$60 / mo
Billed $720 a year
  • 3,000 search credits per month
  • 500,000 export rows per month
  • API access and 25 watched searches
  • Quoted prices for export overages
Enterprise
Custom

Index every page on the domains you need.

  • Every page, not just homepages
  • Dedicated capacity and custom limits
  • Bulk exports for your dataset

Start searching the web's source.

Search a growing index of website source code, exact-string or full regex, full matched source, and pay only for the searches you run.

Search now →