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Free online tools for IT pros, sysadmins and developers. DNS, SSL, security, networking and more — no account needed.

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URL Shortener

Shorten any link instantly. Links expire after 24 hours — need custom aliases or permanent links?

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Password Generator Generate strong, secure random passwords with custom length, symbols, numbers and uppercas… JSON Formatter & Validator Format, beautify and validate JSON with syntax highlighting and error detection. DNS Lookup Look up DNS records for any domain. Query A, AAAA, MX, TXT, CNAME, NS, SOA and more. MX Lookup Look up mail exchanger (MX) records for any domain to find email servers. SPF Record Checker Look up and analyse the SPF DNS record for any domain to verify email sender policy. Port Checker Check if a specific TCP port is open or closed on any hostname or IP address. Traceroute Tool Trace the network path to any hostname or IP and identify routing hops. SSL Certificate Checker Inspect the SSL/TLS certificate for any domain including issuer, validity and chain. URL Shortener Shorten any URL to a compact link. Set a custom alias, expiry time, or make it single-use. Cloud Scripts Ready-to-run PowerShell scripts for Exchange Online, Microsoft 365, Entra ID and cloud adm…

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Security Tools

Password generators, hash tools, JWT decoder and security utilities.

Developer Tools

JSON formatter, Base64, URL encode, regex tester and developer utilities.

DNS & Domain

DNS lookups, WHOIS, SPF, DKIM, DMARC and domain expiry checks.

IP & Network

IP lookup, CIDR calculator, subnet tools, port checker and traceroute.

Web & SSL

HTTP headers, SSL checker, redirect tracer and website status checks.

Email & Deliverability

Email header analysis, SPF/DMARC generators, blacklist checks and SMTP tests.

Time & Generators

Timestamp converter, QR codes, random generators and test data tools.

Scripts

Operational script library split into MSP scripts, Linux scripts, and Windows scripts.