Website Tech Stack Detector (Wappalyzer API Scraper)
Pricing
from $0.50 / 1,000 output rows
Find out what technologies any website runs — JavaScript frameworks, CMS, CDNs, analytics, e-commerce platforms, web servers and more — via the Wappalyzer API. Feed it URLs or domains and get flat, CSV-ready rows, one per detected technology, with category and traffic rank. No API key needed.
Domain
domain
Required
The domain this row belongs to, as resolved from the requested URL or domain. Present on every row, including rows with no detection and failed lookups.
Technology name
technologyName
Optional
Wappalyzer's display name for the detected technology. Absent on a no-detection or error row. A row carrying this field is a charged row.
Technology slug
technologySlug
Optional
Wappalyzer's stable key for the technology. Use this to join against Wappalyzer's taxonomy or to deduplicate across runs; the display name is not stable enough for that.
Detected version(s)
versions
Optional
Comma-separated list of version strings, NOT an array - joined so the column stays flat in CSV and Excel. Split on ', ' to get the list. Null when no version could be determined, which is the common case; how common depends on the sites scanned.
CPE identifier
cpe
Optional
Common Platform Enumeration 2.3 identifier - the key CVE databases use, so it turns this output into a vulnerability-matching input. Measured over 320 rows: a cpe is NOT tied to a version. 35 of the 52 cpe-bearing rows had no version and carry a WILDCARD cpe (...:bootstrap:*:...), which matches every release of that product; 35 other rows had a version and no cpe at all. And where several versions were detected the cpe pins only one of them - React 17.0.0/17.0.2/18.3.1 yields a cpe for 17.0.0 - so a CVE lookup on it checks one version and silently ignores the rest. Treat a cpe as a product identifier to start from, not a precise version assertion.
Technology popularity rank
trafficRank
Optional
Wappalyzer's popularity rank for THE TECHNOLOGY, not for the domain. A lower number means the technology is more widely deployed across the web. It varies between rows of the same domain, so reading it as the site's traffic rank is wrong - bbc.com rows carry values in the hundreds of thousands.
Last confirmed (Unix seconds)
confirmedAt
Optional
When Wappalyzer last confirmed this technology on this domain, as a Unix timestamp in SECONDS (not milliseconds, not ISO 8601). Multiply by 1000 for JavaScript Date.
Technology icon URL
iconUrl
Optional
Absolute URL of Wappalyzer's icon for the technology.
Categories
categories
Optional
Comma-separated category names for the technology, NOT an array - joined for flat CSV and Excel output. A technology can sit in several categories. Split on ', ' to get the list.
Error
error
Optional
Why this domain's lookup failed. Present only on error rows, which carry no technology fields and are not charged.
errorStatus
Optional
HTTP status of a failed lookup, as a number, so a caller can branch on it instead of re-parsing the error string. Null when the request never got a response, and on successful rows.
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