Website Technology Checker
Discover what frameworks, CMS, libraries, analytics, and hosting power any website in seconds.
Comprehensive Stack Analysis
What can you detect?
ToolJi analyzes 40+ popular technologies across frameworks, content systems, styling, analytics, and cloud infrastructure.
Frameworks
Next.js, React, Vue, Nuxt, Angular, Svelte, Remix, Astro
CMS & Ecommerce
WordPress, Shopify, WooCommerce, Webflow, Wix, Ghost
CSS & Styling
Tailwind CSS, Bootstrap, Material UI, Chakra UI, Bulma
JavaScript Libraries
jQuery, GSAP, Swiper, Alpine.js, Axios, Lodash
Analytics & Tracking
Google Analytics (GA4), GTM, Meta Pixel, Hotjar, Clarity
Hosting & CDN
Vercel, Netlify, Cloudflare, AWS, Fastly, GitHub Pages
Fonts & Icons
Google Fonts, Font Awesome, Adobe Typekit, Inter
Security Protocols
HTTPS Encryption, HSTS Protocol Headers
Built for Web Professionals
Who is this for?
For Developers
Inspect unfamiliar codebases, check framework choices, and analyze modern web stack architectures.
For Freelancers
Audit client websites before starting redesign or maintenance projects to estimate requirements.
For Competitor Research
Understand what hosting, analytics, and UI frameworks fast-growing websites rely on.
Simple 3-Step Process
How it works
Enter Website URL
Paste any public website link like https://example.com
Instant Inspection
ToolJi inspects response headers, scripts, styles & HTML tags
See Tech Stack
View categorized frameworks, CMS, analytics & confidence levels
Frequently Asked Questions
Website Technology Checker FAQ
How does Website Technology Checker work?
ToolJi safely inspects the public HTML DOM structure, script tags, stylesheet references, meta tags, and server response headers of the target website URL to identify signature patterns used by modern frameworks, CMS, libraries, and hosting platforms.
Can it detect whether a website uses React or Next.js?
Yes! ToolJi detects React root mount elements, Next.js static asset paths (/_next/static/), __NEXT_DATA__ payloads, and Next.js server headers with high confidence.
Can it detect WordPress or Shopify?
Yes. It checks for wp-content/wp-includes assets, WordPress generator meta tags, Shopify theme scripts (cdn.shopify.com), and Shopify checkout objects.
Can it detect hosting providers and CDNs?
Yes. It inspects server headers for Vercel (x-vercel-id), Cloudflare (cf-ray, server: cloudflare), Netlify (x-nf-request-id), and AWS CloudFront headers.
Can every single backend technology be detected?
No automated tool can detect 100% of internal backend database or server logic if no public observable signal is exposed in HTTP response headers or HTML output. ToolJi displays confidence indicators based on verified public evidence.
🔒 We analyze the public webpage you provide. No account required. No data stored permanently.