✦ Free · no sign-up · nothing stored

What's this site
built with?

Paste any website. Sniff reveals its tech stack, how fast it answers, how well it's secured, and the CO₂ every visit costs.

What is nextrix.co.in built with?

Nextrix — Nextrix: small, honest tools for making decisions. Credit card terms checked against bank documents, product comparisons, a decision helper, a resume maker and more.

Tech stack

Scores

Verdict

Nextrix is a lightweight static site with just 17 KB weight, zero third-party scripts, and Open Graph metadata implementation. Its biggest strength is exceptional energy efficiency (A+ carbon grade at 0.007g per visit) paired with a 92/100 performance score and A-grade security rating. The most useful improvement would be adding a Permissions-Policy HTTP header to restrict which browser features the site can access.

Scanned 2026-10-30.

1

Paste any website

Sniff fetches the page once, like a browser would, and weighs every file it loads.

2

See the stack

About 110 fingerprints reveal frameworks, CMSs, hosting, CDNs, analytics, payments and more.

3

Get the scores

Speed, security headers grade and CO₂ per visit, with a plain-English verdict and fixes.

Popular tech stack reports

github.comstripe.comnotion.sovercel.comairbnb.comnetflix.comspotify.comshopify.comfigma.comlinear.appopenai.comanthropic.comslack.comdiscord.comreddit.commedium.comstackoverflow.comwikipedia.orgnytimes.combbc.comcanva.comduolingo.comzerodha.comswiggy.comzomato.comflipkart.comrazorpay.comcred.clubgroww.innykaa.commyntra.commakemytrip.com

Questions

How do I find out what a website is built with?

Paste the address into Sniff. It fetches the page once and looks for the fingerprints that frameworks, CMSs, hosting providers, CDNs and analytics tools leave in the HTML, response headers, loaded files and cookies, then lists everything it recognises.

Is Sniff free?

Yes. Sniff is free, needs no sign-up and stores nothing about you. Reports for popular sites are cached for a week so they load instantly.

How is the carbon footprint calculated?

Sniff weighs every file the page loads and applies the Sustainable Web Design model: about 0.81 kWh per gigabyte transferred at the global average grid intensity of 494 g CO2e per kWh, then grades the result from A+ to F.

What does the security grade mean?

It checks six HTTP security headers (HSTS, Content-Security-Policy, X-Frame-Options, X-Content-Type-Options, Referrer-Policy and Permissions-Policy), whether the site uses HTTPS with a valid certificate, and whether it reveals server versions.

Can I compare two websites?

Yes. Choose Compare two, enter both addresses and Sniff shows them head to head on speed, security, carbon, page weight and tech stack, with a winner.

What technologies can Sniff detect?

About 110, including Next.js, React, Vue, Angular, Svelte, WordPress, Shopify, Webflow, Wix, Tailwind, Bootstrap, Cloudflare, Vercel, Netlify, AWS, Google Analytics, Stripe, Razorpay, Intercom and many more.