Krawly.io is a free online platform that provides 160+ web scraping, SEO analysis, security auditing, and developer tools. It allows users to extract data from websites, analyze SEO performance, check security headers, detect technologies, scrape YouTube data, generate leads, and much more — all without requiring signup or installation.

Is Krawly free to use?

Yes! Krawly is completely free. You get 30 free uses per day without signing up. No credit card required.

Do I need to install anything?

No installation needed. All 160+ tools run directly in your browser with no downloads or setup required. There is also a REST API and a Chrome extension for advanced users.

What data formats can I export?

All tools support JSON, CSV, and Excel (XLS) export. The screenshot tool provides PNG images. API responses are in JSON format.

How does the Krawly API work?

Krawly is a free web-based platform. All 160+ tools are available directly in your browser with no signup required. You get 30 free uses per day.

What types of tools does Krawly offer?

Krawly offers tools in 11 categories: SEO (meta tag validator, heading analyzer, keyword density, core web vitals), Web Scraping (email scraper, table extractor, CSS selector scraper), Security (SSL checker, port scanner, WordPress scanner), OSINT (DNS lookup, WHOIS, IP geolocation), E-Commerce (Amazon scraper, Shopify scraper, price tracker), YouTube (comments scraper, playlist extractor, thumbnail downloader), Developer (JSON formatter, regex tester, JWT decoder), Content (word counter, readability score), Analysis (technology detector, page speed analyzer), Social Media (TikTok analyzer, Instagram analyzer), and Utilities (QR code generator, URL shortener).

Is Krawly a good alternative to SEMrush, Ahrefs, or BuiltWith?

Krawly provides many of the same on-page SEO analysis features as SEMrush and Ahrefs for free, including meta tag validation, heading analysis, keyword density checking, and structured data auditing. For technology detection, it serves as a free alternative to BuiltWith and Wappalyzer. However, Krawly focuses on individual page analysis rather than domain-wide crawling or backlink databases.

Can I use Krawly for lead generation?

Yes. Krawly's Lead Generation tool automatically crawls a website's homepage, about, contact, and team pages to extract email addresses, phone numbers, LinkedIn profiles, Twitter handles, Facebook pages, Instagram accounts, and GitHub links. Results can be exported as JSON, CSV, or Excel.

OSINT Free · no signup

Website Owner Finder

Find who owns and operates a website — WHOIS data, contact emails, analytics codes, CMS platform, and social media profiles.

Updated May 24, 2026

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Discover 160+ free tools for web scraping, SEO analysis, OSINT, and more. 30 free uses every day — no signup required.

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160+ Free Tools No Signup Required JSON / CSV / Excel 30 Uses / Day

What is Website Owner Finder?

Website Owner Finder is a comprehensive OSINT tool that consolidates WHOIS registration data, contact email and phone extraction, analytics and tracking code detection, CMS platform identification, and social media link discovery — all from a single URL. Get a complete picture of who owns and operates any website.

Use cases

Competitive intelligence — research who operates competitor websites
Due diligence — verify website ownership before partnerships
Lead generation — find contact information from target websites
Security research — identify tracking and analytics on suspicious sites
SEO analysis — discover CMS platform and technical stack

Key features

WHOIS registration data (registrant, registrar, dates, name servers)

Contact email and phone number extraction from page content

Analytics detection (Google Analytics, GTM, Facebook Pixel, Hotjar, Clarity)

CMS detection (WordPress, Shopify, Wix, Squarespace, and 6 more)

Social media profile link discovery

Page metadata extraction (title, description, generator tag)

Frequently asked questions

Many domain registrars offer privacy protection services that mask the registrant's personal information. In these cases, the WHOIS data will show the privacy service instead of the actual owner.

CMS detection looks for known signatures in the page HTML (e.g., wp-content for WordPress, cdn.shopify.com for Shopify). It's highly accurate for major platforms but may miss heavily customized installations.

It detects Google Analytics (UA and GA4), Google Tag Manager, Facebook Pixel, Hotjar, and Microsoft Clarity tracking codes embedded in the page HTML.