Developer Tools
Everyday development utilities: MD5/SHA-256 hash, JWT decoder, regex tester, text comparison (diff), cron schedule decoder, XML ⇄ JSON, SQL formatter, IP calculator, HTML/CSS/JS minifier, DNS lookup, and Whois.
Most tools run right in your browser; DNS lookup and Whois run the query through our server, since browsers can’t make those requests directly.
MD5, SHA-256 Hash Calculator Online
Compute MD5, SHA-1, SHA-256 and SHA-512 hashes of text online.
JWT Decoder — Decode a Token Online
Decode a JWT token online: header and payload in readable form, plus exp/iat dates.
Regex Tester
Test a regular expression online: matches, positions and capture groups update as you type.
Text Compare
Compare two blocks of text online and spot differences line by line: added and removed lines are highlighted.
Cron to Text
Decode a cron expression into plain English online.
Convert XML to JSON and Back
Convert between XML and JSON online in both directions.
SQL Formatter
Format a SQL query online: proper indentation and line breaks, choice of keyword case.
IP Calculator
Calculate the network address, broadcast address, subnet mask, host range and number of available addresses from an IP and CIDR…
Minify and Beautify HTML, CSS, JS
Minify or beautify HTML, CSS and JavaScript online.
DNS Lookup
Check a domain's DNS records online: A, AAAA, MX, TXT, NS and SOA.
WHOIS — Check a Domain
Look up a domain's registrar, registration and expiry dates, name servers and other WHOIS data online.