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.

Utilities Free · no signup

Change Monitor Lite

Take a content snapshot of any page — hash, word count, headings, links, and key element fingerprints for change detection.

Updated May 24, 2026

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What is Change Monitor Lite?

Change Monitor Lite takes a detailed content snapshot of any webpage — capturing title, meta description, word count, heading structure, link and image counts, and a SHA-256 content hash. Save the snapshot and compare it later to detect content changes without manually checking pages.

Use cases

Content monitoring — detect unauthorized changes to your website
Competitor tracking — monitor competitor page changes over time
SEO monitoring — catch accidental noindex, title, or meta description changes
Compliance — maintain evidence of page content at specific points in time
Development QA — verify that deployments haven't broken content or structure

Key features

SHA-256 content hash for change detection

Word count, heading count, link and image statistics

Full heading structure with hierarchy levels

Key element fingerprints (title hash, description hash, body text length)

ETag and Last-Modified header capture

UTC timestamp for each snapshot

Frequently asked questions

Run the tool on the same URL at different times and compare the content_hash values. If the hash changed, the page content changed. Use key_elements hashes to identify which part changed.

This is a 'lite' single-snapshot tool. For automated monitoring, use the API to schedule periodic snapshots and compare hashes programmatically.

No, it captures structural fingerprints and statistics rather than full HTML for security and efficiency. The SHA-256 hash uniquely identifies the page's content state.