# SearchWebCode

> Source-code search engine for the public web. Give it a literal string or a regular expression and it returns every website whose HTML, CSS or JavaScript contains it, with the full matched page source, not a snippet.

SearchWebCode is a reverse code search over 129,313,463 unique domains, one homepage per domain, rebuilt monthly. Current build: August 2026.

How it works: queries are matched as literal substrings (or regexes) against stored raw page source, and every returned page is re-verified against that source before it is shown, so a result means the string is genuinely in the page, not that the page talks about the topic. Result counts are an approximate upper bound from a fast trigram estimate; the listed pages themselves are exact.

Pricing: pay-as-you-go, $0.05 per search, no subscription or seat fee. Enterprise adds a full-depth crawl of every page on a site (rather than homepages only), higher rate limits and bulk access, admin@searchwebcode.com.

Scope and limits worth quoting accurately: the standard index holds one page (the homepage) per domain, so it answers "which sites ship this code" and not "which URL on this site ships this code". There is no `ip:` or `filetype:` operator. Counts on this site are verified substring matches against stored source, never extrapolated estimates, and each one names the exact footprint it was measured with so any number can be re-run as a search and checked.

## Search syntax

- `"exact phrase"`, match the string exactly, including spaces and punctuation. Quotes are optional for a single word, required for anything with a space.
- `a b`, AND. Whitespace between terms requires both on the same page.
- `a OR b`, `a | b`, OR. Either term matches.
- `-"term"`, NOT. A leading minus removes pages containing the term.
- `( … )`, grouping. Precedence is NOT > AND > OR, so parenthesize when mixing.
- `site:tld` (alias `tld:`), restrict to a top-level domain, e.g. `site:io`. Top-level only; `site:example.com` is not supported.
- `-site:tld`, exclude a top-level domain.
- `/regex/`, regular expression over the source, e.g. `/UA-\d{4,}-\d/`. Both slashes are required; a bare path like `/wp-content/themes` is searched literally.
- `\"` and `\\`, escape a literal quote or backslash inside a phrase.

Example: `"wp-content" -"woocommerce" site:io` finds WordPress sites on .io that do not run WooCommerce. Longer, rarer literals are faster and more precise, `"gtag/js?id=G-"` beats `"gtag"`.

## Core pages

- [Home](https://www.searchwebcode.com/): what SearchWebCode does, live demo, comparison table and pricing
- [Search](https://www.searchwebcode.com/search): the search app itself; a query can be linked directly as /search?q=<urlencoded>&regex=true
- [Search syntax reference](https://www.searchwebcode.com/syntax): every operator, with examples and the differences from PublicWWW
- [Technology directory](https://www.searchwebcode.com/technologies): all 81 tracked technologies grouped by category, each with its source-code fingerprint and live count
- [Guides](https://www.searchwebcode.com/guides): how-to articles for source-code search, technographics and OSINT pivots
- [Comparisons](https://www.searchwebcode.com/alternatives): SearchWebCode versus PublicWWW, NerdyData, BuiltWith and Wappalyzer
- [Terms of service](https://www.searchwebcode.com/terms)
- [Privacy policy](https://www.searchwebcode.com/privacy)

## Guides

- [Find every website using a WordPress plugin](https://www.searchwebcode.com/guides/find-websites-using-a-wordpress-plugin): A WordPress plugin loads its assets from a fixed folder. Search that path and you get a live list of the sites running it, with the source to prove it. (published 2025-09-15)
- [Find websites that share a Google Analytics ID](https://www.searchwebcode.com/guides/find-websites-sharing-a-google-analytics-id): Two sites that report to the same Analytics property are almost always run by the same person. Search the ID string and the hidden network falls out. (published 2025-10-20)
- [Find every site running the same Facebook (Meta) Pixel](https://www.searchwebcode.com/guides/find-the-same-facebook-pixel): A Meta Pixel ID links the sites that share an ad account. Search the ID and you map the network behind a campaign. (published 2025-11-18)
- [How to search the source code of the web](https://www.searchwebcode.com/guides/search-html-source-across-the-web): Source-code search finds pages by what's in their HTML, CSS, and JavaScript, not by words on the page. Here's how it works and when to use it. (updated 2026-08-10)
- [Regex search over website source code](https://www.searchwebcode.com/guides/regex-search-website-source-code): When a literal string won't do, regex matches patterns, ID formats, versioned CDN paths, inline config. A cookbook of patterns that work. (published 2025-12-09)
- [Find Shopify stores that use Klaviyo](https://www.searchwebcode.com/guides/find-shopify-stores-using-klaviyo): One boolean query intersects two footprints and hands you a clean list of Shopify stores running Klaviyo, a ready-made prospect list. (published 2026-01-22)
- [Connect domains by a shared tracking ID](https://www.searchwebcode.com/guides/connect-domains-by-tracking-id-osint): Analytics, ad, and pixel IDs are unique per owner but reused across their sites. Pivoting on them is how investigators unmask domain networks. (published 2026-03-11)
- [Build technographic lead lists from JavaScript fingerprints](https://www.searchwebcode.com/guides/build-technographic-lead-lists): Every tool a site runs leaves a fingerprint in its source. Turn 'uses X but not Y' into a targeted, current prospect list you export yourself. (published 2026-04-28)
- [PublicWWW alternatives, tested with real queries](https://www.searchwebcode.com/guides/publicwww-alternatives-tested): The landscape for source-code and technology search, what each tool is actually for, tested on the same three real footprints. (updated 2026-08-10)

## Comparisons

- [SearchWebCode vs PublicWWW](https://www.searchwebcode.com/alternatives/publicwww): SearchWebCode vs PublicWWW for source-code search by string or regex, pricing, full-source access, index size, and when to pick which.
- [SearchWebCode vs NerdyData](https://www.searchwebcode.com/alternatives/nerdydata): SearchWebCode vs NerdyData for source-code search, pricing, what each returns, lead-gen features, and when to choose which.
- [SearchWebCode vs BuiltWith](https://www.searchwebcode.com/alternatives/builtwith): SearchWebCode vs BuiltWith, searching raw source by any string or regex vs profiling a site's tech stack from a fixed catalogue.
- [SearchWebCode vs Wappalyzer](https://www.searchwebcode.com/alternatives/wappalyzer): Wappalyzer identifies a page's tech; SearchWebCode reverse-searches the web for every site shipping a footprint, forward vs reverse, compared.

## Use cases

- [Reverse AdSense Lookup](https://www.searchwebcode.com/use-cases/reverse-adsense-lookup): Find every website that shares a Google AdSense publisher ID (ca-pub-…) by searching their page source, a fast way to map a network of sites.
- [Find Websites Using a WordPress Theme](https://www.searchwebcode.com/use-cases/find-websites-using-wordpress-theme): Find every site running a specific WordPress theme by searching for its /wp-content/themes/ path in the page source.
- [Find Sites Using a JavaScript Library](https://www.searchwebcode.com/use-cases/find-sites-using-a-javascript-library): Find every website that ships a specific JavaScript library, by CDN path, filename, or a global the library defines, with exact-string or regex search.

## Data reports

- [Which analytics tools does the web ship?](https://www.searchwebcode.com/data/analytics-census): A source-code census of the analytics and tag tools detected across the SearchWebCode index, by the footprints they leave in page source.
- [Web Technology Adoption Report: 129M Domains](https://www.searchwebcode.com/data/web-technology-adoption-report): Verified adoption counts and shares for 17 web technologies across about 129 million unique-domain homepages in the August 2026 SearchWebCode index snapshot.
- [Analytics census CSV](https://www.searchwebcode.com/downloads/analytics-census-2026-08.csv): raw counts behind the analytics census, August 2026 build
- [Technology adoption CSV](https://www.searchwebcode.com/downloads/web-technology-adoption-2026-08.csv): raw counts behind the adoption report, August 2026 build

Both reports and their CSVs are free to cite and re-publish with attribution to SearchWebCode and a link to the source page.

## Technologies

Every page below reverse-searches one technology: what it is, the literal fingerprint it ships, how many indexed domains contain that fingerprint (August 2026 build), known false positives, and example matching domains. Counts are the number of indexed homepages containing the fingerprint.

### Analytics

- [Analytics & Tracking Technologies (category hub)](https://www.searchwebcode.com/technologies/analytics)
- [Amplitude](https://www.searchwebcode.com/technologies/amplitude): fingerprint `cdn.amplitude.com/libs/`, 63,214 indexed domains
- [FullStory](https://www.searchwebcode.com/technologies/fullstory): fingerprint `fullstory.com/s/fs.js`, 17,688 indexed domains
- [Google Analytics 4](https://www.searchwebcode.com/technologies/google-analytics-4): fingerprint `gtag/js?id=G-`, 9,614,187 indexed domains
- [Google Tag Manager](https://www.searchwebcode.com/technologies/google-tag-manager): fingerprint `googletagmanager.com/gtm.js`, 7,391,424 indexed domains
- [Heap](https://www.searchwebcode.com/technologies/heap): fingerprint `heap.load`, 1,432,616 indexed domains
- [Hotjar](https://www.searchwebcode.com/technologies/hotjar): fingerprint `static.hotjar.com/c/hotjar-`, 388,400 indexed domains
- [Matomo](https://www.searchwebcode.com/technologies/matomo): fingerprint `_paq`, 934,463 indexed domains
- [Microsoft Clarity](https://www.searchwebcode.com/technologies/microsoft-clarity): fingerprint `clarity.ms/tag/`, 637,831 indexed domains
- [Mixpanel](https://www.searchwebcode.com/technologies/mixpanel): fingerprint `mixpanel.init`, 188,353 indexed domains
- [Plausible Analytics](https://www.searchwebcode.com/technologies/plausible): fingerprint `plausible.io/js/script.js`, 75,243 indexed domains
- [Segment](https://www.searchwebcode.com/technologies/segment): fingerprint `cdn.segment.com/analytics.js/v1/`, 55,211 indexed domains
- [Universal Analytics](https://www.searchwebcode.com/technologies/universal-analytics): fingerprint `google-analytics.com/analytics.js`, 4,627,646 indexed domains

### Advertising & Pixels

- [Advertising & Conversion Pixels (category hub)](https://www.searchwebcode.com/technologies/advertising)
- [Criteo](https://www.searchwebcode.com/technologies/criteo): fingerprint `static.criteo.net/js/ld/`, 47,339 indexed domains
- [DoubleClick](https://www.searchwebcode.com/technologies/doubleclick): fingerprint `doubleclick.net`, 1,104,443 indexed domains
- [Facebook Pixel](https://www.searchwebcode.com/technologies/facebook-pixel): fingerprint `fbevents.js`, 2,986,269 indexed domains
- [Google Ads](https://www.searchwebcode.com/technologies/google-ads): fingerprint `googleadservices.com/pagead/conversion`, 209,210 indexed domains
- [Google AdSense](https://www.searchwebcode.com/technologies/google-adsense): fingerprint `adsbygoogle.js`, 2,055,724 indexed domains
- [LinkedIn Insight Tag](https://www.searchwebcode.com/technologies/linkedin-insight-tag): fingerprint `snap.licdn.com/li.lms-analytics`, 156,887 indexed domains
- [Outbrain](https://www.searchwebcode.com/technologies/outbrain): fingerprint `widgets.outbrain.com/outbrain.js`, 10,729 indexed domains
- [Pinterest Tag](https://www.searchwebcode.com/technologies/pinterest-tag): fingerprint `pintrk`, 57,958 indexed domains
- [Taboola](https://www.searchwebcode.com/technologies/taboola): fingerprint `cdn.taboola.com/libtrc/`, 71,776 indexed domains
- [TikTok Pixel](https://www.searchwebcode.com/technologies/tiktok-pixel): fingerprint `analytics.tiktok.com/i18n/pixel`, 155,405 indexed domains
- [X (Twitter) Pixel](https://www.searchwebcode.com/technologies/twitter-pixel): fingerprint `static.ads-twitter.com/uwt.js`, 44,738 indexed domains

### CMS & Site Builders

- [CMS & Website Builders (category hub)](https://www.searchwebcode.com/technologies/cms)
- [Drupal](https://www.searchwebcode.com/technologies/drupal): fingerprint `sites/default/files`, 1,405,525 indexed domains
- [Elementor](https://www.searchwebcode.com/technologies/elementor): fingerprint `wp-content/plugins/elementor`, 7,404,518 indexed domains
- [Ghost](https://www.searchwebcode.com/technologies/ghost): fingerprint `public/cards.min.js`, 867,739 indexed domains
- [Joomla](https://www.searchwebcode.com/technologies/joomla): fingerprint `/media/jui/`, 373,078 indexed domains
- [Shopify](https://www.searchwebcode.com/technologies/shopify): fingerprint `cdn.shopify.com`, 1,975,674 indexed domains
- [Squarespace](https://www.searchwebcode.com/technologies/squarespace): fingerprint `static1.squarespace.com`, 306,631 indexed domains
- [Webflow](https://www.searchwebcode.com/technologies/webflow): fingerprint `data-wf-page`, 627,498 indexed domains
- [Wix](https://www.searchwebcode.com/technologies/wix): fingerprint `static.wixstatic.com`, 4,220,660 indexed domains
- [WordPress](https://www.searchwebcode.com/technologies/wordpress): fingerprint `wp-content`, 24,899,751 indexed domains

### JavaScript Frameworks

- [JavaScript Frameworks & Libraries (category hub)](https://www.searchwebcode.com/technologies/frameworks)
- [Alpine.js](https://www.searchwebcode.com/technologies/alpinejs): fingerprint `x-data=`, 4,860,990 indexed domains
- [Angular](https://www.searchwebcode.com/technologies/angular): fingerprint `ng-version=`, 2,699,260 indexed domains
- [Bootstrap](https://www.searchwebcode.com/technologies/bootstrap): fingerprint `bootstrap.min.css`, 17,915,175 indexed domains
- [Gatsby](https://www.searchwebcode.com/technologies/gatsby): fingerprint `___gatsby`, 77,927 indexed domains
- [jQuery](https://www.searchwebcode.com/technologies/jquery): fingerprint `jquery.min.js`, 34,960,796 indexed domains
- [Next.js](https://www.searchwebcode.com/technologies/nextjs): fingerprint `/_next/static`, 1,860,584 indexed domains
- [Nuxt](https://www.searchwebcode.com/technologies/nuxt): fingerprint `/_nuxt/`, 639,475 indexed domains
- [React](https://www.searchwebcode.com/technologies/react): fingerprint `react-dom`, 952,016 indexed domains
- [Svelte](https://www.searchwebcode.com/technologies/svelte): fingerprint `svelte-announcer`, 568 indexed domains
- [Vue.js](https://www.searchwebcode.com/technologies/vuejs): fingerprint `data-server-rendered`, 467,136 indexed domains

### E-commerce Platforms

- [E-commerce Platforms (category hub)](https://www.searchwebcode.com/technologies/ecommerce)
- [BigCommerce](https://www.searchwebcode.com/technologies/bigcommerce): fingerprint `cdn11.bigcommerce.com`, 36,890 indexed domains
- [Magento](https://www.searchwebcode.com/technologies/magento): fingerprint `data-mage-init`, 56,589 indexed domains
- [Snipcart](https://www.searchwebcode.com/technologies/snipcart): fingerprint `cdn.snipcart.com`, 15,849 indexed domains
- [WooCommerce](https://www.searchwebcode.com/technologies/woocommerce): fingerprint `wp-content/plugins/woocommerce`, 5,031,078 indexed domains

### Payment Providers

- [Payment Providers (category hub)](https://www.searchwebcode.com/technologies/payments)
- [Afterpay](https://www.searchwebcode.com/technologies/afterpay): fingerprint `static.afterpay.com`, 63,974 indexed domains
- [Braintree](https://www.searchwebcode.com/technologies/braintree): fingerprint `braintreegateway.com`, 196,862 indexed domains
- [Klarna](https://www.searchwebcode.com/technologies/klarna): fingerprint `js.klarna.com`, 26,534 indexed domains
- [PayPal](https://www.searchwebcode.com/technologies/paypal): fingerprint `paypal.com/sdk/js`, 132,461 indexed domains
- [Square](https://www.searchwebcode.com/technologies/square): fingerprint `web.squarecdn.com`, 154,318 indexed domains
- [Stripe](https://www.searchwebcode.com/technologies/stripe): fingerprint `js.stripe.com/v3`, 487,552 indexed domains

### CDN & Hosting

- [CDN & Hosting Providers (category hub)](https://www.searchwebcode.com/technologies/cdn)
- [Akamai](https://www.searchwebcode.com/technologies/akamai): fingerprint `akamaized.net`, 164,303 indexed domains
- [Amazon CloudFront](https://www.searchwebcode.com/technologies/amazon-cloudfront): fingerprint `cloudfront.net`, 2,404,447 indexed domains
- [Cloudflare](https://www.searchwebcode.com/technologies/cloudflare): fingerprint `/cdn-cgi/`, 6,874,202 indexed domains
- [Fastly](https://www.searchwebcode.com/technologies/fastly): fingerprint `.fastly.`, 1,470,843 indexed domains
- [jsDelivr](https://www.searchwebcode.com/technologies/jsdelivr): fingerprint `cdn.jsdelivr.net`, 4,675,504 indexed domains
- [Netlify](https://www.searchwebcode.com/technologies/netlify): fingerprint `.netlify.app`, 128,907 indexed domains
- [unpkg](https://www.searchwebcode.com/technologies/unpkg): fingerprint `unpkg.com`, 1,556,758 indexed domains
- [Vercel](https://www.searchwebcode.com/technologies/vercel): fingerprint `.vercel.app`, 1,998,584 indexed domains

### Fonts & UI

- [Web Fonts & UI Toolkits (category hub)](https://www.searchwebcode.com/technologies/fonts)
- [Adobe Fonts](https://www.searchwebcode.com/technologies/adobe-fonts): fingerprint `use.typekit.net`, 1,602,877 indexed domains
- [Font Awesome](https://www.searchwebcode.com/technologies/font-awesome): fingerprint `font-awesome`, 17,288,215 indexed domains
- [Google Fonts](https://www.searchwebcode.com/technologies/google-fonts): fingerprint `fonts.googleapis.com`, 30,700,679 indexed domains

### Marketing & CRM

- [Marketing Automation & CRM (category hub)](https://www.searchwebcode.com/technologies/marketing)
- [ActiveCampaign](https://www.searchwebcode.com/technologies/activecampaign): fingerprint `activehosted.com`, 733,251 indexed domains
- [HubSpot](https://www.searchwebcode.com/technologies/hubspot): fingerprint `js.hs-scripts.com`, 287,468 indexed domains
- [Klaviyo](https://www.searchwebcode.com/technologies/klaviyo): fingerprint `static.klaviyo.com`, 387,387 indexed domains
- [Mailchimp](https://www.searchwebcode.com/technologies/mailchimp): fingerprint `chimpstatic.com`, 777,684 indexed domains
- [Marketo](https://www.searchwebcode.com/technologies/marketo): fingerprint `munchkin.marketo.net`, 21,981 indexed domains

### Chat & Support

- [Live Chat & Support Widgets (category hub)](https://www.searchwebcode.com/technologies/chat)
- [Crisp](https://www.searchwebcode.com/technologies/crisp): fingerprint `client.crisp.chat`, 717,128 indexed domains
- [Drift](https://www.searchwebcode.com/technologies/drift): fingerprint `js.driftt.com`, 22,332 indexed domains
- [Intercom](https://www.searchwebcode.com/technologies/intercom): fingerprint `widget.intercom.io`, 300,376 indexed domains
- [LiveChat](https://www.searchwebcode.com/technologies/livechat): fingerprint `cdn.livechatinc.com`, 283,500 indexed domains
- [Tawk.to](https://www.searchwebcode.com/technologies/tawk-to): fingerprint `embed.tawk.to`, 323,337 indexed domains
- [Zendesk](https://www.searchwebcode.com/technologies/zendesk): fingerprint `static.zdassets.com`, 75,991 indexed domains

### Consent & Security

- [Consent & Security Tools (category hub)](https://www.searchwebcode.com/technologies/security)
- [Cookiebot](https://www.searchwebcode.com/technologies/cookiebot): fingerprint `consent.cookiebot.com`, 1,210,720 indexed domains
- [hCaptcha](https://www.searchwebcode.com/technologies/hcaptcha): fingerprint `hcaptcha.com/1/api.js`, 96,959 indexed domains
- [OneTrust](https://www.searchwebcode.com/technologies/onetrust): fingerprint `cdn.cookielaw.org`, 332,788 indexed domains
- [reCAPTCHA](https://www.searchwebcode.com/technologies/recaptcha): fingerprint `recaptcha/api.js`, 5,060,663 indexed domains

### Media & Video

- [Media & Video Embeds (category hub)](https://www.searchwebcode.com/technologies/media)
- [Vimeo](https://www.searchwebcode.com/technologies/vimeo): fingerprint `player.vimeo.com`, 1,180,848 indexed domains
- [Wistia](https://www.searchwebcode.com/technologies/wistia): fingerprint `fast.wistia.com`, 1,493,485 indexed domains
- [YouTube Embed](https://www.searchwebcode.com/technologies/youtube-embed): fingerprint `youtube.com/embed`, 4,840,024 indexed domains

## Optional

- [Sitemap](https://www.searchwebcode.com/sitemap.xml): all indexable URLs in XML
- [robots.txt](https://www.searchwebcode.com/robots.txt)