What is a technology stack?

A technology stack is the complete combination of programming languages, frameworks, servers, and software used to build and run an application.

Can it detect the backend language or database?

No — server-side language, database, and internal architecture aren't visible in a page's HTML or client-facing response headers, so this tool only reports what it can genuinely verify: frontend frameworks, CMS signatures, analytics, and hosting/CDN clues.

Why couldn't it detect a URL I entered?

Some sites block automated fetch requests. Switch to "Paste HTML Source" and paste the page's HTML directly instead.

Technology Stack Checker

Analyze the complete frontend, backend & hosting technology stack of any site.

TL;DR: Technology Stack Checker is a free, browser-based tool that lets you analyze the complete frontend, backend & hosting technology stack of any site.

Enter Website URL for Full 5-Layer Stack Audit

Comprehensive full-stack architecture analyzer: Frontend, Backend, Database/APIs, Cloud/CDN, and Security/Telemetry layers.

About the Technology Stack Checker

Technology Stack Checker scans a page's real HTML and response headers for frontend framework, CMS, analytics, and hosting/CDN signatures. Backend language, database, and server architecture can't be detected this way, since they leave no trace in public page content.

How to Use the Technology Stack Checker

Enter a website domain.
The scanner queries technical fingerprints and resource scripts.
View structured breakdown of frontend, backend, and marketing technologies.
Export the technology intelligence report.

Expert Tips for Technology Stack Checker

Full-Stack Visibility: Gain instant clarity on whether a site uses Tailwind CSS, Bootstrap, React, or WordPress.
Security Hardening: Verify whether your own server is leaking sensitive version numbers in headers.
Client Discovery: Great for agencies preparing sales pitches and development estimates.

Related Guides & Tutorials

Json Formatting For Developers — Learn in-depth concepts, best practices, and expert tips.
Base64 Encoding Explained — Learn in-depth concepts, best practices, and expert tips.

Live URL Analysis & Privacy

When auditing a live URL, public webpage markup is fetched via our secure proxy service. When using Paste HTML or file upload mode, all analysis runs 100% locally in your browser with zero network requests.

Frequently Asked Questions

: A technology stack is the complete combination of programming languages, frameworks, servers, and software used to build and run an application.
: No — server-side language, database, and internal architecture aren't visible in a page's HTML or client-facing response headers, so this tool only reports what it can genuinely verify: frontend frameworks, CMS signatures, analytics, and hosting/CDN clues.
: Some sites block automated fetch requests. Switch to "Paste HTML Source" and paste the page's HTML directly instead.

Cite This Tool

Referencing this tool in a paper, article, or bibliography? Copy a ready-made citation below.

NexLove.org. (2026). Technology Stack Checker [Software]. https://nexlove.org/tools/technology-stack-checker.html

“Technology Stack Checker.” NexLove.org, 2026, nexlove.org/tools/technology-stack-checker.html.

NexLove.org (2026) Technology Stack Checker. Available at: https://nexlove.org/tools/technology-stack-checker.html (Accessed: 2026).

@misc{nexlove_technology_stack_checker,
  title = {Technology Stack Checker},
  author = {{NexLove.org}},
  year = {2026},
  url = {https://nexlove.org/tools/technology-stack-checker.html}
}

Embed This Tool

Add the live Technology Stack Checker tool to your own website with this snippet — it loads the real, working tool in an iframe, not a static screenshot.

<iframe src="https://nexlove.org/embed/technology-stack-checker.html" width="100%" height="600" style="border:1px solid #e2e8f0;border-radius:12px" title="Technology Stack Checker — NexLove.org" loading="lazy"></iframe>