PublicWWW

Summary

PublicWWW is a source code search engine that lets you search HTML, JavaScript, and CSS across 500M+ web pages for any code snippet, ID, or keyword, designed for digital marketing research, competitive analysis, and technical reconnaissance.

What is PublicWWW?

PublicWWW indexes the source code of over 500 million web pages, letting you search for content traditional search engines can't reach: Analytics IDs, ad network accounts, WordPress themes, JavaScript library versions, server headers, and any HTML/CSS/JS code snippet. Results are sorted by site popularity, with the top 1 million sites revealed for free and paid users accessing the top 3 million results plus CSV downloads.

Core Capabilities

• Full-text source code search: Query any string in HTML, CSS, JavaScript, and HTTP headers
• Tech stack detection: Find sites using specific Analytics IDs, AdSense accounts, WordPress themes, or JS libraries
• Competitive research: Identify related sites sharing the same widgets, publisher IDs, or code patterns
• API and export: Developer API and CSV downloads, up to 1 million results per query
• Fast indexing: Searches complete in seconds, results sorted by site popularity

Pros

• Search source code and technical fingerprints traditional search engines can't access
• Massive index of 500M+ web pages covering the top 3 million sites
• Fast results sorted by popularity, top 1 million sites free to view
• API and CSV export for large-scale research and automation
• Ideal for affiliate marketing research, technical reconnaissance, and competitive analysis

Cons

• Free accounts only show top 1 million sites, full results require paid plan
• Index depth limited to top 3 million sites, niche sites may not be covered
• Steeper learning curve, requires HTML/CSS/JS syntax knowledge for effective queries
• No real-time indexing, data may lag by weeks
• Pricing not transparent, requires signup to view full plans

Decision Guidance

Use it when: You need to find sites using specific Analytics IDs, ad networks, WordPress themes, or JavaScript libraries, conduct affiliate marketing research, perform competitive technical analysis, or identify related sites sharing code patterns.

Consider alternatives: If you only need basic tech stack detection (try BuiltWith or Wappalyzer), real-time web monitoring, or aren't familiar with source code syntax—PublicWWW's specialization may be overkill.