Free Webmaster Tools
Professional SSL, DNS, WHOIS, PageSpeed, security and developer utilities — each with its own SEO-optimized page and instant browser-based results.
Network & DNS
SSL, DNS, WHOIS, ping & IP tools
SSL Checker
Verify HTTPS certificate and TLS reachability
DNS Lookup
Query A, AAAA, MX, TXT, NS, CNAME & SOA records
DNS Propagation
Check DNS across Google, Cloudflare, Quad9 & OpenDNS
Ping Test
Measure HTTPS round-trip latency to any host
Speed Test
Measure download speed and latency via Cloudflare
IP Lookup
Geolocate any IP address — city, ISP, ASN
Subdomain Finder
Discover subdomains via certificate transparency logs
WHOIS Lookup
Domain registrar, expiry date & nameservers
Performance & SEO
PageSpeed, headers & meta tag checks
Security & Developer
Passwords, hashes, JWT & JSON utilities
Password Tester
Entropy analysis + Have I Been Pwned breach check
Hash Generator
SHA-1, SHA-256, SHA-384 & SHA-512 hashes
Base64 Encode/Decode
Convert strings to and from Base64
URL Encode/Decode
Encode or decode URI components safely
JWT Decoder
Decode JSON Web Token header and payload
JSON Formatter
Pretty-print and validate JSON
PHP Bcrypt Hash
Generate, verify & test bcrypt password hashes
Utility
QR codes, contrast & placeholder text
QR Code Generator
Create downloadable QR codes from any URL or text
Color Contrast
WCAG AA & AAA contrast ratio checker
Domain Name Generator
Get brandable domain name ideas from a keyword
Lorem Ipsum
Generate placeholder paragraphs for mockups
Frequently asked questions
Are ZeHoster webmaster tools really free?
Yes. All 22 tools are free with unlimited use and no signup required.
Is my data stored on your servers?
Most tools run entirely in your browser. Network lookups use public APIs (Google DNS, RDAP, etc.) — we do not log your inputs.
Can I use these tools for client websites?
Absolutely. Agencies and freelancers use our SSL, DNS and PageSpeed tools daily for client audits.
Do I need hosting with ZeHoster to use the tools?
No — anyone can use them. If you need fast hosting after fixing issues, explore our NVMe plans from $1/mo.