How to Build a Competitor Tech Stack Auditor in 15 Minutes (Node.js + SnapAPI)

I wanted to know what technologies my top 5 competitors were using. Google it? Useless. Run Wappalyzer on each one manually? Fine for one site. But I had 50 sites and I wanted the results in a spreadsheet, not a browser tab. Here's the 25-line script I built. It runs in Node.js 18+ with no npm install, takes about 15 minutes to set up, and outputs a markdown table you can paste anywhere. What SnapAPI's /analyze endpoint returns The SnapAPI analyze endpoint runs a real Chromium browser against any URL and returns structured JSON in a single call: { "technologies" : [ "React" , "Next.js" , "Vercel" , "Stripe.js" ], "word_count" : 1842 , "primary_cta" : "Start for free" , "navigation" : [ "Products" , "Solutions" , "Pricing" , "Docs" ], "load_time_ms" : 412 } One call. No Puppeteer setup. No DOM parsing. The tech detection covers 30+ frameworks and services — React, Vue, Next.js, Nuxt, Vercel, Cloudflare, Stripe, Intercom, Segment, and more. The full script // tech-audit.js // Audits comp