The Bloomberg
Terminal of the Web
Traffic, tech stacks, company data, and classification for any domain.
Trusted by leading digital brands worldwide
Domain Intelligence
See what's behind
any domain
Enter any URL and instantly get a complete intelligence profile. Everything you need to know about a website, in one place.
- IAB v3 content classification with confidence scores
- Company intelligence — name, HQ, size, revenue
- Technology stack detection — 150+ technologies
- Traffic analytics — global rank, monthly visits
- Similar domains and competitors
- Social media links and logos
Capabilities
Everything you need to
understand the web
Website Classification
Classify any URL into 620+ IAB v3 categories with confidence scores. The global standard for contextual targeting and brand safety.
Company Intelligence
Name, headquarters, employee count, revenue range, founding year, and industry tags for any domain.
Technology Detection
Discover the tech stack behind any website. CMS, analytics, CDN, frameworks, and 150+ technologies.
Logo API
Get any company's up-to-date logo in multiple sizes. One API call, instant results.
Traffic Analytics
Global rank, monthly visits, bounce rate, traffic sources, and top countries for any website.
Similar Domains
Find competitors and alternatives for any website. Discover who else operates in the same space.
For Developers
Built for developers.
Loved by data teams.
RESTful API with 10 endpoints. JSON responses. Batch CSV enrichment. Start integrating in minutes.
{
"domain": {
"categories": [
{
"name": "/Computers & Electronics/Consumer Electronics",
"confidence": 0.92,
"IAB3_id": "IAB-632-596"
}
],
"logo_url": "https://klazify.s3.amazonaws.com/...",
"social_media": { ... }
},
"objects": {
"company": {
"name": "Apple",
"countryCode": "US",
"employeesRange": "100K+",
"tech": ["salesforce", "stripe", ...]
}
},
"success": true
}Industries
Explore by industry
Testimonials
Loved by 100,000+ companies
"The Klazify API plugged right into our pipeline. We classify 50k domains a day with near-perfect IAB accuracy — no ML team needed on our side."
"Klazify Intelligence changed how we prospect. We filter by industry, country, and tech stack in seconds — it's like having a research team on demand."
"We switched from manual taxonomy tagging to the Klazify API and reduced classification time by 97%. The IAB v3 coverage is unmatched."
"The domain intelligence pages give us traffic estimates, tech stacks, and company info in one place. Our sales team lives on it now."
"We built our entire competitive intelligence dashboard on top of Klazify. The combination of the API and the web explorer is incredibly powerful."
"I needed a tech stack detection API that actually works at scale. Klazify identified technologies across our entire portfolio of 12k sites overnight."
"Klazify Intelligence lets us explore competitors by category and technology without writing a single query. The export feature saves us hours every week."
"The traffic analytics and ranking data on Klazify are incredibly detailed. We use it to benchmark our portfolio companies against industry leaders."
"We evaluated Similarweb and BuiltWith before choosing Klazify. Better coverage, cleaner API, and the web platform is a bonus our whole team uses."
"The Klazify API plugged right into our pipeline. We classify 50k domains a day with near-perfect IAB accuracy — no ML team needed on our side."
"Klazify Intelligence changed how we prospect. We filter by industry, country, and tech stack in seconds — it's like having a research team on demand."
"We switched from manual taxonomy tagging to the Klazify API and reduced classification time by 97%. The IAB v3 coverage is unmatched."
"The domain intelligence pages give us traffic estimates, tech stacks, and company info in one place. Our sales team lives on it now."
"We built our entire competitive intelligence dashboard on top of Klazify. The combination of the API and the web explorer is incredibly powerful."
"I needed a tech stack detection API that actually works at scale. Klazify identified technologies across our entire portfolio of 12k sites overnight."
"Klazify Intelligence lets us explore competitors by category and technology without writing a single query. The export feature saves us hours every week."
"The traffic analytics and ranking data on Klazify are incredibly detailed. We use it to benchmark our portfolio companies against industry leaders."
"We evaluated Similarweb and BuiltWith before choosing Klazify. Better coverage, cleaner API, and the web platform is a bonus our whole team uses."
"Clean REST API, great docs, fast responses. I had the Klazify integration running in production within a day. The code examples saved me real time."
"We use the Klazify Intelligence platform to discover potential partners by industry and geography. It replaced three separate tools for us."
"The category explorer is a game-changer. We mapped our entire addressable market by browsing IAB categories and filtering by company size."
"My SDR team uses Klazify to build targeted prospecting lists. Filter by technology + country + industry and export a CSV in 10 seconds."
"We white-label Klazify data in our analytics product. The API returns rich JSON with classification, company data, social links — everything we need."
"Klazify Intelligence helped us identify content gaps in our industry. The domain pages show exactly what technologies and categories competitors target."
"The similar domains endpoint is surprisingly accurate. We use it to discover competitors our clients didn't even know existed."
"Before Klazify, mapping the tech stack landscape for a sector took us weeks. Now I search a category, filter by technology, and have my report in minutes."
"IAB v3 classification at this quality is rare. We use Klazify to tag publisher inventory for programmatic buyers — accuracy directly impacts our revenue."
"Clean REST API, great docs, fast responses. I had the Klazify integration running in production within a day. The code examples saved me real time."
"We use the Klazify Intelligence platform to discover potential partners by industry and geography. It replaced three separate tools for us."
"The category explorer is a game-changer. We mapped our entire addressable market by browsing IAB categories and filtering by company size."
"My SDR team uses Klazify to build targeted prospecting lists. Filter by technology + country + industry and export a CSV in 10 seconds."
"We white-label Klazify data in our analytics product. The API returns rich JSON with classification, company data, social links — everything we need."
"Klazify Intelligence helped us identify content gaps in our industry. The domain pages show exactly what technologies and categories competitors target."
"The similar domains endpoint is surprisingly accurate. We use it to discover competitors our clients didn't even know existed."
"Before Klazify, mapping the tech stack landscape for a sector took us weeks. Now I search a category, filter by technology, and have my report in minutes."
"IAB v3 classification at this quality is rare. We use Klazify to tag publisher inventory for programmatic buyers — accuracy directly impacts our revenue."
Pricing
Simple, transparent pricing
No long-term commitments. Upgrade, downgrade, or cancel anytime.
Lookups = browse data on klazify.com · API calls = programmatic REST API access
- All API endpoints included
- CSV export (up to 100 rows)
- Live Data Refresh on demand
- All API endpoints included
- CSV export (up to 1,000 rows)
- Live Data Refresh on demand
- All API endpoints included
- CSV export (up to 10,000 rows)
- Live Data Refresh on demand
Web Intelligence at Scale
Starting at $30,000/year · 1M+ API calls/month
Frequently asked questions
We use advanced AI models combined with real-time web scraping to extract and understand a website's visible content, metadata, and structure. The system classifies each domain into 620+ IAB v3 categories with confidence scores. You can submit any URL or email address — we resolve the domain automatically.
The IAB Content Taxonomy v3 is the global standard used by ad-tech platforms (DSPs, SSPs, publishers) for contextual targeting and brand safety. It covers 620+ topic categories across all industries.
Yes. You get 100 free searches per day on the web platform with no credit card required. All paid plans include a 7-day free trial with up to 50 API calls.
We support all available domains and nearly all languages worldwide, including English, Spanish, French, German, Chinese, Japanese, Arabic, Hindi, Portuguese, and 70+ more.
Each domain profile includes IAB v3 classification with confidence scores, company intelligence (name, HQ, employees, revenue), technology stack detection (150+ technologies), traffic analytics (global rank, monthly visits), social media links, logos, and similar domains.
Our crawler inspects each website's HTML, JavaScript, headers, and network signatures to fingerprint 150+ technologies — including CMS platforms, analytics suites, CDNs, frameworks, ad networks, and payment processors. Detection runs in real-time when you use the refresh parameter.
Our Similar Domains engine delivers a list of websites related to the activity and category of a given URL. This is great for finding competitors, market research, and discovering companies operating in the same space.
Yes. With our CSV Import feature you can upload a list of domains and get them enriched with categories, company info, technologies, and traffic data. You can also request custom offline databases — contact [email protected].
Prices are listed in USD. We accept all major debit and credit cards via Stripe, one of the world's most reliable payment companies. If you have any trouble with paying by card, you can also pay using PayPal.
Yes, absolutely. Upgrades, downgrades, and cancellations are immediate from your dashboard. No questions asked.
By default the rate limit is 360 requests/minute to prevent abuse, but we can expand it for you if needed. Contact our support team for higher limits.
Yes! If you need a larger volume than our standard plans offer, or want a custom offline database, contact [email protected] and our team will be happy to help.
Start exploring the web.
100 free searches per day. No credit card required.