Scan any prospect's website across 3,800+ signals — on-page SEO leaks, security gaps, slow Core Web Vitals, tech stack and verified contacts. Then export a white-label audit report under your own agency branding and open outreach with undeniable proof.
Used by 400+ agencies finding web design & on-page SEO clients across the US, UK, Australia, Canada and Europe.
Live Lead Vault
Real forensic audits from the Grow By Lead dashboard
Grow By Lead is not a rented lead database. It is a forensic audit engine you point at any prospect you already want to win.
Paste one URL or a whole list. The Chrome extension reads 3,800+ technical signals on every site in about 5 seconds — no manual DevTools work.
Missing security headers, slow Core Web Vitals, broken SEO meta, outdated tech stack and verified contacts — every finding backed by evidence.
Generate a client-ready 1-page audit report under your own agency branding, then open outreach with facts instead of a generic pitch.
Want the manual framework first? Read the client website audit playbook or browse the 3,800+ signal qualification checklist.
No guesswork, no generic outreach. Scan the site, pull the proof, send the report.
The Chrome extension reads the page in place; bulk paste runs the same engine on a list. Every scan returns the same 3,800+ normalized signals.
Speed, security, indexability and reachability are graded from what was actually observed on the page — never guessed, never padded.
GPT-6 Astra reads the same scan and writes four pitch angles, while the report exports in your own logo and colours as PDF or Word.
“Your checkout loads in 4.8s on mobile — the 1-page audit is attached.”
A real audit, generated from a real scan. Your logo and details sit in the header, so it reads like your own work — not a tool's output.
Pick a look
How deep
Opens your browser print window — choose "Save as PDF". Inside the app you also get an editable Word copy.
Hi Sarah — I ran a 3,800-signal audit on yoursite.com. Mobile LCP is 4.8s, the checkout is missing CSP and HSTS headers, and 3 product pages have no meta description. I attached the 1-page audit with the fixes ranked by revenue impact.
"I built Grow By Lead to make website research faster and more practical. It captures 3,800+ signals in an average five-second scan, helping agencies, freelancers, and sales teams identify stronger opportunities and reach out with better evidence."
We do not believe in blind cold emails. We believe in showing a business exactly what is broken on its own website — measured, dated and explained — and letting that proof start the conversation.
"Grow By Lead saves me hours every week. I scan a site and instantly know if it's worth my time."
"The evidence-first view is brilliant. I no longer guess what a client needs — I can see it."
"With Grow By Lead GPT my work got so much easier. I paste a scan and get the outreach copy ready."
"Honestly this tool helps me land clients. I show them their own site issues and they listen."
"It cut my research time in half. Something that took an hour now takes a few minutes."
"Grow By Lead saves me hours every week. I scan a site and instantly know if it's worth my time."
"The evidence-first view is brilliant. I no longer guess what a client needs — I can see it."
"With Grow By Lead GPT my work got so much easier. I paste a scan and get the outreach copy ready."
"Honestly this tool helps me land clients. I show them their own site issues and they listen."
"It cut my research time in half. Something that took an hour now takes a few minutes."
"The Chrome extension just fits into how I already work. Nothing extra to learn."
"Every excluded lead comes with a reason. That alone made my pipeline so much cleaner."
"I use Grow By Lead GPT before every call now. It tells me the problems to talk about."
"As a freelancer this saved my time massively. I can qualify ten sites while having coffee."
"Simple, fast and accurate. It's rare that a tool actually does what it promises."
"The Chrome extension just fits into how I already work. Nothing extra to learn."
"Every excluded lead comes with a reason. That alone made my pipeline so much cleaner."
"I use Grow By Lead GPT before every call now. It tells me the problems to talk about."
"As a freelancer this saved my time massively. I can qualify ten sites while having coffee."
"Simple, fast and accurate. It's rare that a tool actually does what it promises."
"It cut my research time in half. Something that took an hour now takes a few minutes."
"Honestly this tool helps me land clients. I show them their own site issues and they listen."
"With Grow By Lead GPT my work got so much easier. I paste a scan and get the outreach copy ready."
"The evidence-first view is brilliant. I no longer guess what a client needs — I can see it."
"Grow By Lead saves me hours every week. I scan a site and instantly know if it's worth my time."
"It cut my research time in half. Something that took an hour now takes a few minutes."
"Honestly this tool helps me land clients. I show them their own site issues and they listen."
"With Grow By Lead GPT my work got so much easier. I paste a scan and get the outreach copy ready."
"The evidence-first view is brilliant. I no longer guess what a client needs — I can see it."
"Grow By Lead saves me hours every week. I scan a site and instantly know if it's worth my time."
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