Website Platform Checker for Lead Lists
Paste a list of company websites and see which platform each one runs on (Shopify, WordPress, Wix, Webflow and others), plus whether analytics and a contact page are present.
Economics
- Pricing example
- $12 for 1,000 domains; $49 for 10,000 (first 50 free)
- Daily math
- 2 small packs a day x $12 = $24/day, or one $49 pack every 2-3 days = about $16-25/day.
- Target if you hit the daily math
- Target: $500 - $750 / month if the daily math is hit
Audience and urgency
Audience: Agencies, freelance developers and app makers who sell to businesses on one platform, such as Shopify app developers or WordPress maintenance freelancers.
Urgency: A Shopify specialist wastes outreach on WordPress sites and the other way round. Checking each homepage by hand is slow, and large technology-data tools are priced for big sales teams.
MVP scope
- ✓ Paste or upload up to 10,000 domains; remove duplicates and normalise URLs
- ✓ Fetch each public homepage once (respect robots.txt, polite rate limit, clear user agent) and detect the platform from public HTML and header fingerprints
- ✓ Detect common analytics tags, a contact page link and HTTPS
- ✓ Results table with filters and CSV export
- ✓ Credit packs via Stripe; background job queue with a progress bar
Omitted features
- - Do NOT crawl beyond the homepage and one contact page
- - Do NOT collect personal emails or names
- - Do NOT copy fingerprint databases you have no rights to; write your own rules or use an openly licensed set after checking its licence
Suggested stack
- Frontend
- React + Tailwind CSS
- Backend or API
- Node worker with a job queue (Cloud Run or Fly.io); Supabase for jobs and credits
- Payments
- Stripe Checkout (credit packs)
- Hosting
- Vercel for the front end; Cloud Run or Fly.io for the worker
Repository metadata
- Blueprint ID
website-platform-checker- Category ID
lead_scraper_tool- Monetization ID
usage_pack
Day-one distribution
Channels
- Shopify and WordPress freelancer communities
- Reddit r/shopify and r/Wordpress (self-promotion rules apply)
- Cold email to agencies offering 50 free checks on their own lead list
Reddit strategy
Share a short write-up on qualifying a lead list by platform before outreach, and offer the free 50-domain check.
Cold outreach or directory hook
Run a free check on 50 domains from an agency's own list and send back the platform breakdown.
Search keywords
check what platform a website uses, bulk website technology lookup, find shopify stores list
One-shot master prompt
Build a "Website Platform Checker" web app: React + Tailwind front end and a Node worker. Core requirements: 1. Input: paste or upload CSV of domains (max 10,000 per job). Normalise to https://<root domain>, de-duplicate, and show credits required before starting. 2. Worker: for each domain, check robots.txt, then fetch the homepage once (timeout 10s, max 2 redirects, user agent "PlatformChecker/1.0 (+contact URL)"), 5 concurrent requests max. Store only derived fields, never full HTML. 3. Detection rules written in a JSON file you own: platform (Shopify, WordPress, WooCommerce, Wix, Squarespace, Webflow, Magento, custom/unknown) from meta generator tags, script/asset hostnames and headers; analytics present (GA4, Meta Pixel, TikTok Pixel); contact page link found; HTTPS yes/no. 4. Results table with filters by platform and signals, a progress bar via polling, and CSV export. 5. Credits: 50 free, then Stripe Checkout ($12 for 1,000, $49 for 10,000). Show a short note on what is fetched and that robots.txt is respected.
Comparable products
Published 2026-10-08.
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