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Enter any domain to see its full technology stack: frontend frameworks, backend infrastructure, and standalone platforms. TechnologyChecker normalizes your input automatically (strips protocols, www prefixes, and trailing paths), so you can paste any URL format.
You can also try a quick technology lookup from the TechnologyChecker homepage — no account or signup required.
Domain Technology Lookup page with search bar and stats cards showing 1.5B crawled URLs, 40K technologies detected, and 20 years of historical data

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How domain lookup works

TechnologyChecker uses a two-stage approach for speed and coverage:
1

Database lookup (instant)

Checks the pre-crawled database of 50M+ websites. If the domain exists, results appear instantly.
2

Live detection (5-15 seconds)

If no database results are found, a real-time scan runs using browser rendering and pattern matching.
Live detection results display a “Live Result” banner indicator. An animated loading state appears during scanning. See detection modes for details on scan speed and accuracy.

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What data you get from a domain lookup

After a lookup, you get a complete domain profile with three sections:
Active technologies are grouped by category. Each technology shows:
  • Technology name and logo
  • Category classification
  • First detected and last detected dates
  • Link to the technology detail page
The technology timeline is useful for understanding a company’s tech evolution. Recently removed technologies might indicate dissatisfaction and a buying opportunity.

Technologies

Browse 40,000+ tracked technologies with market share data.

Lead lists

Build prospect lists from domain lookup results.

Domain technologies API

Look up technologies via API for any domain.

Live detection API

Real-time detection with multiple scan modes.

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Frequently asked questions

If no pre-crawled data exists, TechnologyChecker automatically runs a live detection scan using browser rendering. Live results display a “Live Result” banner. You can also trigger this manually via the live detection API (5 credits vs 1 credit for database lookups).
TechnologyChecker normalizes your input automatically. You can enter example.com, https://example.com, www.example.com, or https://www.example.com/path — all resolve to the same domain lookup.
Database results reflect the most recent crawl cycle. Each technology record includes first_seen and last_seen timestamps so you can see exactly when detection occurred. For real-time results, use live detection.
Yes. The domain profile includes both active technologies and historical technologies that are no longer detected. Use the technology history endpoint (GET /v1/domain/{domain}/history) for the full timeline with status changes.