BuiltWith
Identify technologies, frameworks and services used by a website.
- visibility
- Public
- risk
- Low risk
What this tool does.
BuiltWith profiles public web technologies and surfaces a site's visible stack, tags and service providers.
Useful for light fingerprinting, vendor spotting and commercial/competitive research on a web presence.
Documentation · 2 documents.
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A Practical Method for Domain and Infrastructure Recon
A passive-first, layer-by-layer workflow for domain and infrastructure reconnaissance using DNS, certificate transparency, HTTP behavior, technology signals, historical context and broader internet observations without turning discovery into attribution.
Passive First: When Public Web Research Should Stay Narrow
A practical argument for staying narrow and passive as long as possible in public web research, before broader or more interaction-heavy methods start adding noise.
BuiltWith vs urlscan: Stack Hints vs Observed Page Behavior
Compare BuiltWith and urlscan as two different web-research evidence layers: structured current and historical technology profiling versus browser-observed requests, redirects, DOM and page behavior.
What a Tech-Stack Fingerprint Can and Cannot Tell You
A practical method for interpreting web technology fingerprints as evidence: separate CDN, platform, frontend and backend layers, assign confidence, corroborate signals, and avoid false certainty.
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