17 free tools, no registration required
Extract title, description, and keywords from any page
Check HTTP status code and response time
Check up to 50 URLs at once
Check if a site is indexed by Baidu
Look up domain registration info
Query A, AAAA, CNAME, MX, TXT, NS records
Find location and ISP of any IP
Check if a domain is available, single or bulk
Scan a page for broken links
Check which ports are open on a host
Test network latency and reachability
Generate high-quality QR codes
Turn long URLs into short links
Calculate e-commerce profit, margin, and ROI
Calculate sale price and savings
Measure return on ad spend and break-even point
Estimate shipping cost by weight and destination