Enter a public website
Paste a homepage or public page URL. The checker follows a limited number of safe HTTP redirects.
Free website tech stack checker
Website Technology Checker
Find out what any website is built with. Enter a public URL to detect its CMS, frameworks, hosting, CDN, analytics, server, and other visible technologies.
Results are evidence-based estimates. Technologies hidden behind proxies or removed from production code may not be detectable.
How it works
How the technology checker works
Inspect public signals
The service reads a capped HTML sample and response headers, then compares them with known technology signatures.
Review the evidence
Detected tools are grouped by category and include the signal behind each result and a confidence level.
What it can identify
Detect the technology behind any website
CMS and ecommerce
Recognizes common public markers from WordPress, Shopify, Wix, Squarespace, Drupal, Joomla, Ghost, and similar platforms.
Frameworks and UI libraries
Looks for assets and page markers from Next.js, Nuxt, Angular, SvelteKit, React, Vue, jQuery, Bootstrap, and Tailwind CSS.
Infrastructure and services
Uses public headers and scripts to identify CDNs, hosting providers, web servers, analytics, marketing, payments, and security features.
Technology checker FAQ
Website tech stack checker questions
Explore web & network tools →View all DevsLoad tools →How does a website technology checker work?
It compares public HTML, script and stylesheet URLs, meta tags, and HTTP headers with recognizable technology signatures. It does not access private source code or server files.
Are the results always complete?
No. A site can hide headers, bundle or rename assets, proxy services, or load code after the first response. The report only describes signals visible during this check.
How can I find what a website is built with?
Enter the website URL above. The checker looks for public fingerprints that identify its CMS, frontend framework, JavaScript libraries, web server, CDN, hosting, analytics, and ecommerce tools.
Can this checker identify a CMS?
Yes, when the page exposes recognizable markers for systems such as WordPress, Shopify, Wix, Squarespace, Drupal, Joomla, or Ghost.
Does the checker run scripts on the website?
No. It downloads a limited HTML response and inspects the text and response headers. It does not execute the website’s JavaScript.
Is it safe to check any URL?
The service accepts public HTTP and HTTPS pages only. Local, private, reserved, credential-bearing, and non-standard-port URLs are blocked.