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.

Analysis Free · no signup

Page Speed Analyzer

Analyze website loading speed, resource counts, render-blocking scripts, and get optimization recommendations.

Updated May 24, 2026

Example output

Pre-computed real result from running Page Speed Analyzer against https://example.comcaptured 2026-05-13

Measures real load time and inventories every render-blocking resource — large images, oversized JS bundles, missing lazy-loading, missing compression.

Performance score: 98 / 100
Page size: 1.2 KB
Requests: 1
Render-blocking JS: 0
Render-blocking CSS: 0
Images without lazy-load: 0 of 0

What this tells you: example.com loads in ~50ms — a useful baseline. A real e-commerce page typically scores 40-70 on this scale; below 30 usually means an oversized hero image.

↓ Run the tool below with your own input

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What is Page Speed Analyzer?

The Page Speed Analyzer measures your website's loading performance by testing response times, resource counts, HTML size, and render-blocking elements. It provides an overall speed score (0–100) with a letter grade and actionable optimization recommendations.

Use cases

Website optimization — identify slow-loading pages and fix performance bottlenecks
SEO improvement — page speed is a Google ranking factor; faster sites rank higher
User experience auditing — ensure visitors don't leave due to slow load times
Competitive benchmarking — compare your page speed against competitors
Pre-launch checks — verify performance before deploying new pages or features

Key features

Measures Time to First Byte (TTFB) and total load time in milliseconds

Analyzes HTML page size and total resource count

Detects render-blocking scripts and stylesheets

Counts external scripts, stylesheets, images, and inline styles

Provides optimization recommendations based on detected issues

Multi-URL support — test multiple pages at once

Frequently asked questions

The score considers TTFB, total load time, HTML size, resource counts, and the presence of render-blocking elements. Each factor is weighted and combined into a 0–100 score.

No, this tool performs its own server-side analysis using HTTP timing and HTML parsing. It provides complementary insights to Lighthouse.

Yes, enter multiple URLs to test and compare page speed across your site or across competitors.