Sada Files
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  2. 2Adjust
  3. 3Download

Check a public page

Enter a URL in the settings and run the check. Our server fetches the page through an SSRF-safe fetcher, analyses it in memory and stores nothing.

Fetched by our server — public addresses only, nothing stored or logged.

Website Tech Stack Detector online, free

Detect frontend frameworks, CMS platforms, web servers, CDNs, analytics, and JavaScript libraries from any website or pasted HTML.

  • Runs in your browser — no upload
  • Free, no sign-up, no watermark
  • HTML
  • TXT
How to use Website Tech Stack Detector · Website Tech Stack Detector — frequently asked questions

How to use Website Tech Stack Detector

  1. 1

    Add your HTML and TXT file

    Drop a file on the page, paste it, or click Select Files. Nothing is uploaded — it opens straight in your browser.

  2. 2

    Fine-tune the settings

    Set source mode in the Fine-tune panel, or keep the defaults — they suit most files.

  3. 3

    Run Website Tech Stack Detector

    Press the start button. Processing happens on your device, usually in seconds.

  4. 4

    Download the result

    Save the finished file, or continue with another tool without downloading in between.

What Website Tech Stack Detector can do

  • Source Mode: url and paste
  • Private by design — files are processed in your browser and never uploaded
  • Free with no sign-up, no watermark and no daily limit

Website Tech Stack Detector — frequently asked questions

How does the Website Tech Stack Detector identify technologies?

The tool inspects live HTML source code, document object model (DOM) indicators, `<meta name="generator">` tags, script signatures, global JavaScript variables, CSS class naming conventions, and HTTP response headers (such as `X-Powered-By` or `Server`).

Can I inspect a website's stack without making an outbound HTTP request?

Yes. Select the Paste mode tab and paste the raw HTML source code of any web page. The detection logic will execute directly in your browser without contacting the target website or sending any data to our servers.

What categories of technology does this tool detect?

The detector scans for frontend frameworks (React, Next.js, Vue, Nuxt, Angular, Svelte), CMS platforms (WordPress, Shopify, Webflow), CSS frameworks (Tailwind, Bootstrap), web servers, and CDNs.

Does Sada Files store or log the websites I search?

No. In compliance with the Sada Files Privacy Promise, all URL lookups are completely stateless and performed through an ephemeral SSRF-safe proxy without retaining target domains, IP addresses, or query logs.

Why might some technologies not be detected on a website?

Some websites bundle and minify assets aggressively, utilize custom obfuscation, or strip generator meta tags and identifying HTTP headers. Our analyzer detects all visible script, link, and DOM signatures present in the page response.

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