Lookup - Website Profiler icon

Lookup - Website Profiler

by Lookup · joinlookup.com · Tools
FeaturedEstablished publisherManifest V3 Free
View in Chrome Web Store Data as of 15 Oct 2026

Lookup is a lightweight browser extension that gives you instant, in-depth insights into any website you visit.

Users
3,000
0 in 30 days
Rating
4.8 / 5
−0.17 in 30 days
Ratings
6
+1 in 30 days
Store rank
#18K
#15K among extensions
Version
0.2.13
updated 14 Oct 2026

Users

monthly, 16 months
03,0006,000Jun 2025Mar 2026Oct 2026
Latest, 15 Oct 2026: 3,000 usersMove the mouse over the chart for any month

Ratings count

monthly, 16 months
036Jun 2025Mar 2026Oct 2026
Latest, 15 Oct 2026: 6 ratingsMove the mouse over the chart for any month

The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.

About Lookup - Website Profiler

Lookup – The Ultimate Website Profiler Extension for Chrome Ever wondered what’s really behind a website? With Lookup, you can uncover the full story in seconds. Lookup is a lightweight Chrome extension for website analysis that instantly reveals critical details about any site you visit. Whether you’re a developer debugging DNS records, a marketer researching competitors, a sales professional searching for emails, or simply a curious explorer, Lookup puts powerful insights at your fingertips. With just one click, Lookup gives you a clear, organized view of technologies, hosting, DNS, domain history, ownership, IP data, and more — all without leaving the page. 🔎 What You Can Discover with Lookup Browser Extension 1. Website Technologies Checker Find out what a website is built with. Lookup detects the CMS, frameworks, analytics tools, plugins, libraries, and scripts running on a site. Identify competitors’ stacks and spot marketing and tracking tools. Discover plugins, themes, and integrations instantly. 2. Email Finder Extension Need to reach the right contact? Lookup helps you uncover business and generic email addresses linked to a domain — including ones that tools like Hunter.io often miss. Find contact@, hello@, support@, Gmail addresses, and more. Save hours in sales prospecting and outreach. 3. Domain Age & Expiration Checker Quickly verify how old a domain is and when it expires. Spot new vs. established websites. Check credibility before doing business. 4. WHOIS Lookup Tool Access domain registration details directly in your browser. See ownership info (where available) and registrar details. Check renewal and expiration data. 5. IP Lookup & Geolocation Reveal the server IP address and hosting location behind a site. Identify hosting providers and check server geolocation. Use for debugging or competitor analysis. 6. DNS Records Checker Explore detailed DNS records for any domain. Nameservers, MX (Mail) records A records, CNAME, TXT, and more Perfect for developers and IT teams troubleshooting DNS or email setups. 👩‍💻 Who Can Use Lookup? Developers & IT Teams – Debug hosting, DNS, and SSL configurations without external tools. Marketers & SEOs – Research competitor websites, check domain age, and verify authority. Sales & Outreach Professionals – Find emails fast and qualify leads with domain insights. Researchers, Analysts & Curious Explorers – Satisfy your curiosity by uncovering what powers any site. 🚀 Why Choose Lookup Over Other Tools? Instead of juggling multiple tools, Lookup is the perfect alternative to WhatRuns, Wappalyzer, BuiltWith, Hunter.io, and standalone WHOIS or DNS lookup services - all consolidated into one lightweight Chrome extension. Lookup vs. Competitors: ✅ More coverage than WhatRuns or Wappalyzer. ✅ Easier to use than Buitwith. ✅ Finds emails that Hunter.io often misses. ✅ 100% free and privacy-friendly. 💡 Why Now? Websites are more complex than ever, and people need instant website analysis tools that don’t slow them down. In today’s world of sales, SEO, and development, knowing what’s behind a website isn’t optional — it’s essential. ⭐ Key Benefits at a Glance One-click insights – No coding or complex searches required. All-in-one website profiler – Technologies, domain data, DNS, IP, SSL, and emails in one place. Faster prospecting – Find emails instantly for outreach and lead generation. Website credibility check – Verify domain age, ownership, and security at a glance. Lightweight design – Runs smoothly with zero bloat, so you stay productive. 🛠 Example Use Cases Sales: Before cold emailing, check if a site is real, find the right contact email, and confirm business legitimacy. Marketing: Spy on competitors’ tools — see what ads, analytics, or CMS they use. Tech: Diagnose DNS or hosting issues in seconds. Security: Check if a site is using SSL and identify risky domains. Research: Instantly uncover what powers any website you come across. ✅ Try Lookup Today Uncover the technologies, emails, domain history, DNS, and IP details behind any website in seconds. Lookup is the all-in-one website profiler Chrome extension trusted by developers, marketers, SEOs, sales teams, and researchers worldwide. Install Lookup today — and see the web differently.

Growth

WindowUsersChangeRatingsRating
7 days+1,000+50.0%00.00
30 days0+0.0%+1−0.17
6 months+2,000+200.0%+5−0.17
1 year+2,615+679.2%+5−0.17

Chrome Web Store search rankings

Where Lookup - Website Profiler appears when people search the store, with the 30 day change
Search phrasePosition30 days
lookup#42−15

Version history

21 versions recorded
0.2.1314 Oct 2026
0.2.124 Sep 2026
0.2.626 May 2026
0.2.114 May 2026
0.1.2223 Apr 2026
0.1.2025 Mar 2026
0.1.1915 Mar 2026
0.1.184 Mar 2026

Details

Category
Tools
First seen
18 Jun 2025
Size
749 KB
Languages
de, en, id, nl, vi, tr, ca, es
Pricing
Free
Privacy policy
joinlookup.com
Extension ID
fldjmbbjgmffpdjckmhalgadjnnjipfj

Permissions and risk

Moderate riskimpact 3, likelihood 1
Permissions
tabsstorageclipboardWritealarmsscripting
Site access
<all_urls>
Can read and change data on every website you visit.

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